OPINION

M. SMITH, Circuit Judge:

This appeal presents issues of first impression regarding the scope of Federal Arbitration Act (FAA) preemption, 9 U.S.C. § 2 et seq., and the meaning of the Supreme Court's decision in AT & T Mobility LLC v. Concepcion, 563 U.S. 333, 131 S.Ct. 1740, 179 L.Ed.2d 742 (2011). We must decide whether the FAA preempts the California rule announced in Iskanian v. CLS Transportation Los Angeles, LLC, 59 Cal.4th 348, 173 Cal.Rptr.3d 289, 327 P.3d 129 (2014), which bars the waiver of representative claims under the Private Attorneys General Act of 2004 (PAGA), Cal. Lab.Code § 2698 et seq. After closely examining Concepcion and the Court's other statements regarding the purposes of the FAA, we conclude that the Iskanian rule does not stand as an obstacle to the accomplishment of the FAA's objectives, and is not preempted. We reverse the judgment of the district court and remand for further proceedings.

FACTS AND PROCEDURAL BACKGROUND

The Plaintiff-Appellant, Shukri Sakkab (Sakkab), is a former employee of Lenscrafters, an eyewear retailer owned by the Defendant-Appellee, Luxottica Retail North America, Inc. (Luxottica). On January 17, 2012, Sakkab filed a putative class action complaint against Luxottica in the Superior Court of the State of California in and for the County of San Diego. The complaint asserted four causes of action arising out of Sakkab's employment by Luxottica, including (1) unlawful business practices, (2) failure to pay overtime compensation, (3) failure to provide accurate itemized wage statements, and (4) failure to pay wages when due. The complaint alleged that Luxottica misclassified Sakkab and other employees as supervisors so that they would be exempt from overtime wages and meal and rest breaks. Luxottica answered and timely removed the case to federal court. On March 27, 2012, Sakkab filed a first amended complaint (FAC) adding a non-class, representative claim for civil penalties under the PAGA.

On April 23, 2012, Luxottica filed a motion to compel arbitration under the dispute resolution agreement contained in its "Retail Associate Guide." The agreement provided, in pertinent part:

Sakkab signed an acknowledgment indicating that he understood and agreed to the terms of the dispute resolution agreement on June 25, 2010.

On January 10, 2013, the district court granted Luxottica's motion to compel arbitration and dismissed the FAC. The court noted that Sakkab did not dispute that his first four claims were arbitrable. Sakkab argued, however, that the portion of the alternative dispute resolution agreement prohibiting him from bringing any PAGA claims on behalf of other employees was unenforceable under California law. For this reason, Sakkab argued, even if he was required to arbitrate his claims, he could not be denied a forum for his representative PAGA claim. The district court rejected Sakkab's argument that the right to bring a representative PAGA claim is unwaivable under California law. At the time, the California Supreme Court had not yet considered whether PAGA waivers were enforceable under California law. Relying on the Supreme Court's decision in AT & T Mobility LLC v. Concepcion, the district court concluded that the FAA would preempt a state rule barring waiver of PAGA claims. The court then granted the motion to compel arbitration of the claims in the FAC, dismissed Sakkab's complaint, and entered judgment. This timely appeal followed.

JURISDICTION AND STANDARD OF REVIEW

The district court had jurisdiction under 28 U.S.C. § 1332(d)(2). We have appellate jurisdiction under 28 U.S.C. § 1291 because this is an appeal from a final judgment of the district court.

"The district court's decision to grant or deny a motion to compel arbitration is reviewed de novo." Knutson v. Sirius XM Radio Inc., 771 F.3d 559, 564 (9th Cir.2014) (quoting Bushley v. Credit Suisse First Boston, 360 F.3d 1149, 1152 (9th Cir.2004)).

DISCUSSION

After the district court entered judgment in this case, the California Supreme Court ruled that PAGA waivers are unenforceable under California Law. Iskanian, 59 Cal.4th 348, 173 Cal.Rptr.3d 289, 327 P.3d 129. On appeal, Luxottica argues that the FAA preempts the Iskanian rule. After considering the history of the PAGA statute and the Supreme Court's FAA preemption cases, we hold that the FAA does not preempt the Iskanian rule.

I. The Labor Code Private Attorneys General Act

California's Labor Code Private Attorneys General Act of 2004, Cal. Lab.Code § 2698 et seq., "authorizes an employee to bring an action for civil penalties on behalf of the state against his or her employer for Labor Code violations committed against the employee and fellow employees, with most of the proceeds of that litigation going to the state." Iskanian, 59 Cal.4th at 360, 173 Cal.Rptr.3d 289, 327 P.3d 129. An action brought under the PAGA is a type of qui tam action. Id. at 382, 173 Cal.Rptr.3d 289, 327 P.3d 129.

The PAGA was enacted to correct two perceived flaws in California's Labor Code enforcement scheme. Id. at 378-79, 173 Cal.Rptr.3d 289, 327 P.3d 129. The first flaw was that civil penalties were not available to redress violations of some provisions of the Labor Code. Id. at 378, 173 Cal.Rptr.3d 289, 327 P.3d 129. Those provisions only provided for criminal sanctions, not civil fines, and could only be enforced in criminal prosecutions brought by district attorneys, not in civil actions brought by the Labor Commissioner. See id. at 379, 173 Cal.Rptr.3d 289, 327 P.3d 129. As a result, many violations of the Labor Code went unpunished. Id. The PAGA addressed this problem by providing for civil penalties for most Labor Code violations. "For Labor Code violations for which no penalty is provided, the PAGA provides that the penalties are generally $100 for each aggrieved employee per pay period for the initial violation and $200 per pay period for each subsequent violation." Id. (citing Cal. Lab.Code § 2699(f)(2)).2

The second flaw the PAGA addressed was that, even where the Labor Code provided for civil penalties, "there was a shortage of government resources to pursue enforcement." Id.; see also 2003 Cal. Stat. ch. 906 § 1. The legislative history of the PAGA describes the legislature's perception of the seriousness of this problem:

Iskanian, 59 Cal.4th at 379, 173 Cal.Rptr.3d 289, 327 P.3d 129. To compensate for the lack of "[a]dequate financing of essential labor law enforcement functions," the legislature enacted the PAGA to permit aggrieved employees to act as private attorneys general to collect civil penalties for violations of the Labor Code.2003 Cal. Stat. ch. 906 § 1(d). Labor Code section 2699(a) provides:

Seventy-five percent of the civil penalties recovered by aggrieved employees3 under the PAGA are distributed to the Labor and Workforce Development Agency, while the remainder is distributed to the aggrieved employees. Cal. Lab.Code § 2699(i).4

Pre-dispute agreements to waive PAGA claims are unenforceable under California law. In Iskanian v. CLS Transportation Los Angeles, LLC, the California Supreme Court held that two state statutes prohibited the enforcement of PAGA waivers. 59 Cal.4th at 382-83, 173 Cal.Rptr.3d 289, 327 P.3d 129. The first, California Civil Code § 1668, codifies the general principle that agreements exculpating a party for violations of the law are unenforceable.5 The Iskanian court observed that allowing employees to waive the right to bring PAGA actions would "disable one of the primary mechanisms for enforcing the Labor Code." Id. at 383, 173 Cal.Rptr.3d 289, 327 P.3d 129. It reasoned that "[b]ecause such an agreement has as its `object, ... indirectly, to exempt [the employer] from responsibility for [its] own... violation of law,' it is against public policy and may not be enforced." Id. (alterations in original) (quoting Cal. Civ. Code § 1668). The Iskanian court also found that agreements waiving the right to bring PAGA actions violated California Civil Code § 3513. Id. Civil Code § 3513 codifies the general principle that a law established for a public reason may not be contravened by private agreement.6 The court reasoned that "agreements requiring the waiver of PAGA rights would harm the state's interests in enforcing the Labor Code and in receiving the proceeds of civil penalties used to deter violations." Id.

Agreements waiving the right to bring "representative" PAGA claims — that is, claims seeking penalties for Labor Code violations affecting other employees — are also unenforceable under California law. In Iskanian, the court held that even if the PAGA authorized purely "individual" claims,7 an agreement to waive representative PAGA claims would be unenforceable. Id. at 384, 173 Cal.Rptr.3d 289, 327 P.3d 129. The court observed that individual PAGA claims do not "result in the penalties contemplated under the PAGA to punish and deter employer practices that violate the rights of numerous employees under the Labor Code." Id. (quoting Brown v. Ralphs Grocery Co., 197 Cal.App.4th 489, 502, 128 Cal.Rptr.3d 854 (2011)).

II. The Federal Arbitration Act Does Not Preempt the Iskanian Rule

If the Iskanian rule is valid, Sakkab's waiver of his right to bring a representative PAGA action is unenforceable. Therefore, this case turns on whether the FAA, 9 U.S.C. § 2 et seq., preempts the Iskanian rule. We conclude that it does not.

"The FAA was enacted in 1925 in response to widespread judicial hostility to arbitration agreements." Concepcion, 131 S.Ct. at 1745. Section 2 is the "primary substantive provision of the Act." Id. (quoting Moses H. Cone Mem'l Hosp. v. Mercury Constr. Corp., 460 U.S. 1, 24, 103 S.Ct. 927, 74 L.Ed.2d 765 (1983)). It provides:

9 U.S.C. § 2. While "[t]he FAA contains no express pre-emptive provision" and does not "reflect a congressional intent to occupy the entire field of arbitration," Volt Info. Scis., Inc. v. Bd. of Trs. of Leland Stanford Junior Univ., 489 U.S. 468, 477, 109 S.Ct. 1248, 103 L.Ed.2d 488 (1989), it preempts state law "to the extent that it `stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress,'" id. (quoting Hines v. Davidowitz, 312 U.S. 52, 67, 61 S.Ct. 399, 85 L.Ed. 581 (1941)). The final clause of § 2, its saving clause, "permits agreements to arbitrate to be invalidated by `generally applicable contract defenses, such as fraud, duress, or unconscionability,' but not by defenses that apply only to arbitration or that derive their meaning from the fact that an agreement to arbitrate is at issue." Concepcion, 131 S.Ct. at 1746 (quoting Doctor's Assocs., Inc. v. Casarotto, 517 U.S. 681, 687, 116 S.Ct. 1652, 134 L.Ed.2d 902 (1996)); see also Marmet Health Care Ctr., Inc. v. Brown, ___ U.S. ___, 132 S.Ct. 1201, 1204, 182 L.Ed.2d 42 (2012). Even if a state-law rule is "generally applicable," it is preempted if it conflicts with the FAA's objectives. Concepcion, 131 S.Ct. at 1748.

A. The Iskanian Rule is a Ground for the Revocation of Any Contract

To fall within the ambit of § 2's saving clause, the Iskanian rule must be a "ground[] ... for the revocation of any contract." 9 U.S.C. § 2 (emphasis added). We conclude that it is.

The Supreme Court has clarified that a state contract defense must be "generally applicable" to be preserved by § 2's saving clause. Concepcion, 131 S.Ct. at 1746. It is well established that the FAA preempts state laws that single out arbitration agreements for special treatment. See, e.g., Doctor's Assocs., 517 U.S. at 687, 116 S.Ct. 1652. At minimum, then, § 2's "any contract" language requires that a state contract defense place arbitration agreements on equal footing with non-arbitration agreements. See id. The Iskanian rule complies with this requirement. The rule bars any waiver of PAGA claims, regardless of whether the waiver appears in an arbitration agreement or a non-arbitration agreement.

Some of our cases can be read to suggest that the phrase "any contract" in § 2's saving clause requires that a defense apply generally to all types of contracts, in addition to requiring that the defense apply equally to arbitration and non-arbitration agreements. See Ting v. AT & T, 319 F.3d 1126, 1147-48 (9th Cir.2003) (holding that California's Consumer Legal Remedies Act, Cal. Civ.Code § 1751, is "not a law of `general applicability'" within the ambit of § 2's saving clause because it applies only to noncommercial consumer contracts); Bradley v. Harris Research, Inc., 275 F.3d 884, 890 (9th Cir.2001) (holding that California Business & Professions Code § 20040.5 does not apply to "any contract" because it "applies only to forum selection clauses and only to franchise agreements").8 However, the Court's decision in AT & T Mobility, LLC v. Concepcion, 563 U.S. 333, 131 S.Ct. 1740, 179 L.Ed.2d 742, cuts against this construction of the saving clause. The Court in Concepcion held that the FAA preempted California law providing that class action waivers in certain consumer contracts of adhesion were unconscionable and unenforceable. 131 S.Ct. at 1748-53. Even though the state-law rule at issue only applied to a narrow class of consumer contracts, the Court strongly implied that the rule was a "generally applicable contract defense[]." See id. at 1748. The Court held that the rule was preempted because it conflicted with the purposes of the FAA, even though the rule purported to apply to "any contract." See id. ("Although § 2's saving clause preserves generally applicable contract defenses, nothing in it suggests an intent to preserve state-law rules that stand as an obstacle to the accomplishment of the FAA's objectives.").

Following the logic of Concepcion, we conclude that the Iskanian rule is a "generally applicable" contract defense that may be preserved by § 2's saving clause, provided it does not conflict with the FAA's purposes.

B. The Iskanian Rule Does Not Conflict with the FAA's Purposes

We turn now to whether the Iskanian rule conflicts with the FAA's purposes. We apply ordinary conflict preemption principles to determine whether a state-law rule conflicts with a federal statute containing a saving clause. See Geier v. Am. Honda Motor Co., Inc., 529 U.S. 861, 870-72, 120 S.Ct. 1913, 146 L.Ed.2d 914 (2000). In determining whether a state law is impliedly preempted, "[t]he purpose of Congress is the ultimate touchstone." Medtronic, Inc. v. Lohr, 518 U.S. 470, 485, 116 S.Ct. 2240, 135 L.Ed.2d 700 (1996) (alteration in original) (quoting Retail Clerks Int'l Ass'n, Local 1625, AFLCIO v. Schermerhorn, 375 U.S. 96, 103, 84 S.Ct. 219, 11 L.Ed.2d 179 (1963)). "What is a sufficient obstacle is a matter of judgment, to be informed by examining the federal statute as a whole and identifying its purpose and intended effects...." Crosby v. Nat'l Foreign Trade Council, 530 U.S. 363, 373, 120 S.Ct. 2288, 147 L.Ed.2d 352 (2000). In exercising our judgment, we do not write on a blank slate, for the Supreme Court has repeatedly identified the purposes of the FAA and defined the scope of FAA preemption. See Allied-Bruce Terminix Cos., Inc. v. Dobson, 513 U.S. 265, 283, 115 S.Ct. 834, 130 L.Ed.2d 753 (1995) (O'Connor, J., concurring) (describing the Court's FAA preemption jurisprudence as "an edifice of [the Court's] own creation"). After considering the objectives of the FAA, we conclude that the Iskanian rule does not conflict with those objectives, and is not impliedly preempted.9

1. The FAA's Purpose to Overcome Judicial Hostility to Arbitration

The Supreme Court has stated that Congress enacted the FAA to "overrule the judiciary's longstanding refusal to enforce agreements to arbitrate and to place such agreements upon the same footing as other contracts." Granite Rock Co. v. Int'l Bhd. of Teamsters, 561 U.S. 287, 302, 130 S.Ct. 2847, 177 L.Ed.2d 567 (2010) (quoting Volt, 489 U.S. at 478, 109 S.Ct. 1248). The FAA therefore preempts state laws prohibiting the arbitration of specific types of claims. See, e.g., Marmet, 132 S.Ct. at 1203; Preston v. Ferrer, 552 U.S. 346, 356-59, 128 S.Ct. 978, 169 L.Ed.2d 917 (2008). The Amici Curiae argue that the Iskanian rule conflicts with the FAA's purpose to overcome judicial hostility to arbitration because it prohibits outright the arbitration of "individual" PAGA claims. We reject this argument.

The California Supreme Court's decision in Iskanian expresses no preference regarding whether individual PAGA claims are litigated or arbitrated. It provides only that representative PAGA claims may not be waived outright. 59 Cal.4th at 384, 173 Cal.Rptr.3d 289, 327 P.3d 129. The Iskanian rule does not prohibit the arbitration of any type of claim.

2. The FAA's Purpose to Ensure Enforcement of the Terms of Arbitration Agreements

The Supreme Court has stated that "[t]he `principal purpose' of the FAA is to `ensur[e] that private arbitration agreements are enforced according to their terms.'" Concepcion, 131 S.Ct. at 1748 (second alteration in original) (quoting Volt, 489 U.S. at 478, 109 S.Ct. 1248). The Court has also stated that the FAA embodies "a liberal federal policy favoring arbitration agreements, notwithstanding any state substantive or procedural policies to the contrary." Id. at 1749 (quoting Moses H. Cone, 460 U.S. at 24, 103 S.Ct. 927). The Iskanian rule does not conflict with these purposes.

Read broadly, these statements of the FAA's purposes would require strict enforcement of all terms contained in an arbitration agreement, including terms that are unenforceable under generally applicable state law. Such a broad construction of the FAA's purposes is untenable, of course, because it would render § 2's saving clause wholly "ineffectual." See Geier, 529 U.S. at 870, 120 S.Ct. 1913; Prima Paint Corp. v. Flood & Conklin Mfg. Co., 388 U.S. 395, 404 n. 12, 87 S.Ct. 1801, 18 L.Ed.2d 1270 (1967) ("As the `saving clause' in § 2 indicates, the purpose of Congress in 1925 was to make arbitration agreements as enforceable as other contracts, but not more so."). Congress plainly did not intend to preempt all generally applicable state contract defenses, only those that "interfere[] with arbitration," Concepcion, 131 S.Ct. at 1750.

A defense interferes with arbitration if, for example, it prevents parties from selecting the procedures they want applied in arbitration. See id. at 1748-53. Concepcion illustrates how a generally applicable contract defense might do so. The California rule at issue in Concepcion, which provided that class action waivers in certain consumer contracts of adhesion were unconscionable, did not explicitly discriminate against arbitration. See id. at 1745. As applied to arbitration agreements, however, the rule "interfere[ed] with fundamental attributes of arbitration," id. at 1748, by imposing formal classwide arbitration procedures on the parties against their will. Id. at 1750-51. As the Court explained,

Id. at 1751 (citation omitted) (quoting Stolt-Nielsen S.A. v. AnimalFeeds Int'l Corp., 559 U.S. 662, 685, 130 S.Ct. 1758, 176 L.Ed.2d 605 (2010)). The Court observed that "the switch from bilateral to class arbitration sacrifices the principal advantage of arbitration — its informality — and makes the process slower, more costly, and more likely to generate procedural morass than final judgment." Id. The parties could not opt out of the formal procedures of class arbitration because the procedures were required to protect the due process rights of absent parties. Id. Therefore, although the California rule prohibiting class action waivers applied equally to both arbitration agreements and non-arbitration agreements, it could not be applied to arbitration agreements without interfering with parties' freedom to select informal procedures.

The Iskanian rule prohibiting waiver of representative PAGA claims does not diminish parties' freedom to select informal arbitration procedures. To understand why, it is essential to examine the "fundamental[]" differences between PAGA actions and class actions. See Baumann v. Chase Inv. Servs. Corp., 747 F.3d 1117, 1123 (9th Cir.2014) (quoting McKenzie v. Fed. Express Corp., 765 F.Supp.2d 1222, 1233 (C.D.Cal.2011)). The class action is a procedural device for resolving the claims of absent parties on a representative basis. See Fed.R.Civ.P. 23; Ortiz v. Fibreboard Corp., 527 U.S. 815, 832-33, 119 S.Ct. 2295, 144 L.Ed.2d 715 (1999); Amchem Prods., Inc. v. Windsor, 521 U.S. 591, 613-17, 117 S.Ct. 2231, 138 L.Ed.2d 689 (1997). By contrast, a PAGA action is a statutory action in which the penalties available are measured by the number of Labor Code violations committed by the employer. An employee bringing a PAGA action does so "as the proxy or agent of the state's labor law enforcement agencies," Iskanian, 59 Cal.4th at 380, 173 Cal.Rptr.3d 289, 327 P.3d 129 (quoting Arias v. Superior Court, 46 Cal.4th 969, 986, 95 Cal.Rptr.3d 588, 209 P.3d 923 (2009)), who are the real parties in interest, see id. at 382, 173 Cal.Rptr.3d 289, 327 P.3d 129. As the state's proxy, an employee-plaintiff may obtain civil penalties for violations committed against absent employees, Cal. Lab.Code § 2699(g)(1), just as the state could if it brought an enforcement action directly. However, by obtaining such penalties, the employee-plaintiff does not vindicate absent employees' claims, for the PAGA does not give absent employees any substantive right to bring their "own" PAGA claims. See Amalgamated Transit Union, Local 1756, AFLCIO v. Superior Court, 46 Cal.4th 993, 1003, 95 Cal.Rptr.3d 605, 209 P.3d 937 (2009); see also Iskanian, 59 Cal.4th at 381, 173 Cal.Rptr.3d 289, 327 P.3d 129 (explaining that "[t]he civil penalties recovered on behalf of the state under the PAGA are distinct from the statutory damages to which employees may be entitled in their individual capacities"). An agreement to waive "representative" PAGA claims — that is, claims for penalties arising out of violations against other employees — is effectively an agreement to limit the penalties an employee-plaintiff may recover on behalf of the state.

Because a PAGA action is a statutory action for penalties brought as a proxy for the state, rather than a procedure for resolving the claims of other employees, there is no need to protect absent employees' due process rights in PAGA arbitrations. Compare Concepcion, 131 S.Ct. at 1751-52 (observing "it is ... odd to think that an arbitrator would be entrusted with ensuring that third parties' due process rights are satisfied"), with Arias, 46 Cal.4th at 984-87, 95 Cal.Rptr.3d 588, 209 P.3d 923. PAGA arbitrations therefore do not require the formal procedures of class arbitrations. See Baumann, 747 F.3d at 1123.10

Id. at 1122-23 (citations omitted). Because representative PAGA claims do not require any special procedures, prohibiting waiver of such claims does not diminish parties' freedom to select the arbitration procedures that best suit their needs. Nothing prevents parties from agreeing to use informal procedures to arbitrate representative PAGA claims. This is a critically important distinction between the Iskanian rule and the rule at issue in Concepcion.

The dissent emphasizes that both the Iskanian rule and the rule at issue in Concepcion "interfere[] with the parties' freedom to limit their arbitration only to those claims arising between the contracting parties." We do not read Concepcion to require the enforcement of all waivers of representative claims in arbitration agreements. Whether a claim is technically denominated "representative" is an imperfect proxy for whether refusing to enforce waivers of that claim will deprive parties of the benefits of arbitration.11 Instead, Concepcion requires us to examine whether the waived claims mandate procedures that interfere with arbitration, as the class claims in Concepcion did. Here, they do not.

We take the dissent's broader point to be that the Iskanian rule defeats the parties' contractual expectations, as expressed in their arbitration agreement. See Concepcion, 131 S.Ct. at 1752 ("Arbitration is a matter of contract, and the FAA requires courts to honor parties' expectations."). We recognize that Sakkab and Luxottica likely expected the waiver of representative PAGA claims to be enforced, and that the Iskanian rule prevents that expectation from being fulfilled. Any generally applicable state law that invalidates a mutually agreed upon term of an arbitration agreement will, by definition, defeat the parties' contractual expectations. However, the FAA's saving clause clearly indicates that Congress did not intend for the parties' expectations to trump any and all other interests. As we have explained, a rule requiring that the parties' expectations be enforced in all circumstances, regardless of whether doing so conflicts with generally applicable state law, would render the saving clause wholly ineffectual.

We acknowledge that the Court in Concepcion also expressed concern that "class arbitration greatly increases risks to defendants" by aggregating claims and increasing the amount of potential damages. Id. at 1752. As the Court observed, arbitration is "poorly suited to the higher stakes of class litigation," because it does not provide for judicial review. Id. Although PAGA actions do not aggregate individual claims, they may nonetheless involve high stakes. Defendants may face hefty civil penalties in PAGA actions, and may be unwilling to forgo judicial review by arbitrating them. It does not follow, however, that the FAA preempts the Iskanian rule just because the amount of civil penalties the PAGA authorizes could make arbitration a less attractive method than litigation for resolving representative PAGA claims. By their nature, some types of claims are better suited to arbitration than others. See Gilmer v. Interstate/Johnson Lane Corp., 500 U.S. 20, 26, 111 S.Ct. 1647, 114 L.Ed.2d 26 (1991) (recognizing that agreements to arbitrate federal statutory claims are enforceable even if they do not appear to be "appropriate for arbitration"). But the FAA would not preempt a state statutory cause of action that imposed substantial liability merely because the action's high stakes would arguably make it poorly suited to arbitration. Cf. Medtronic, 518 U.S. at 485, 116 S.Ct. 2240 ("[B]ecause the states are independent sovereigns in our federal system, we have long presumed that Congress does not cavalierly pre-empt statelaw causes of action."). Nor, we think, would the FAA require courts to enforce a provision limiting a party's liability in such an action, even if that provision appeared in an arbitration agreement. Cf. Booker v. Robert Half Int'l, Inc., 413 F.3d 77, 83 (D.C.Cir.2005) (assuming, without deciding, that a term in an arbitration agreement barring punitive damages was unenforceable as applied to a claim under the District of Columbia Human Rights Act). The FAA contemplates that parties may simply agree ex ante to litigate high-stakes claims if they find arbitration's informal procedures unsuitable. By the same token, the FAA does not require courts to enforce agreements to waive the right to bring representative PAGA actions just because the amount of penalties an aggrieved employee is authorized to recover for the state makes the formal procedures of litigation more attractive than arbitration's informal procedures. Just as the high stakes involved in antitrust actions may cause parties to agree ex ante to exclude antitrust claims from arbitration, parties may prefer to litigate representative PAGA claims.

It is true that PAGA actions, like many causes of action, can be complex. It is not true, however, that PAGA actions are necessarily "procedurally" complex, as the dissent claims. Rather, the potential complexity of PAGA actions is a direct result of how an employer's liability is measured under the statute. The amount of penalties an employee may recover is measured by the number of violations an employer has committed, and the violations may involve multiple employees. "[P]otential complexity should not suffice to ward off arbitration," Mitsubishi Motors Corp. v. Soler Chrysler-Plymouth, Inc., 473 U.S. 614, 633, 105 S.Ct. 3346, 87 L.Ed.2d 444 (1985), where, as here, the complexity flows from the substance of the claim itself, rather than any procedures required to adjudicate it (as with class actions). Cf. id. (holding that an agreement to arbitrate antitrust claims was enforceable).

The dissent argues that representative PAGA actions will make the arbitration process "slower" and "more costly." There is no support for this conclusion in the record. Cf. Concepcion, 131 S.Ct. at 1751 (citing American Arbitration Association statistics regarding the duration of class arbitrations). Moreover, even if there were evidence that representative PAGA actions take longer or cost more to arbitrate than other types of claims, the same could be said of any complex or fact-intensive claim. Antitrust claims, for example, have the potential to make arbitration slower and more costly. This does not mean that a rule declining to enforce waivers of such claims interferes with the FAA in any meaningful sense, since, unlike class claims, parties are free to arbitrate them using the procedures of their choice. In many ways, arbitration is well suited to resolving complex disputes, provided that the parties are free to decide how the arbitration will be conducted. See id.; see also American Arbitration Association Commercial Arbitration Rules (describing separate procedures for "Large, Complex, Commercial Disputes").

The dissent also argues that representative PAGA claims are "more likely to generate procedural morass." But whether arbitration of representative PAGA actions is likely to "generate procedural morass" depends, first and foremost, on the procedures the parties select. One way parties may streamline the resolution of complex PAGA claims is by agreeing to limit discovery in arbitration. See Dotson v. Amgen, Inc., 181 Cal.App.4th 975, 983, 104 Cal.Rptr.3d 341 (2010) (observing that "arbitration is meant to be a streamlined procedure. Limitations on discovery, including the number of depositions, is one of the ways streamlining is achieved"). California courts have recognized that "discovery limitations are an integral and permissible part of the arbitration process." Id. (citing Armendariz v. Found. Health Psychcare Servs., Inc., 24 Cal.4th 83, 106 n. 11, 99 Cal.Rptr.2d 745, 6 P.3d 669 (2000)); see also Roman v. Superior Court, 172 Cal.App.4th 1462, 1476, 92 Cal.Rptr.3d 153 (2009). Notably, California law permits parties to arbitrate under the American Arbitration Association's employment dispute resolution rules. See Roman, 172 Cal.App.4th at 1476, 92 Cal.Rptr.3d 153. The rules give arbitrators broad authority to decide how much discovery is appropriate, "consistent with the expedited nature of arbitration." See American Arbitration Association Employment Arbitration Rules and Mediation Procedures (2009), at 19.

Of course, whether representative PAGA claims are likely to "generate procedural morass" will also depend on whether, and to what extent, state law purports to limit parties' right to use informal procedures, including limited discovery, in representative PAGA arbitrations. It is conceivable that a state law imposing such limits could run afoul of the Court's decision in Concepcion by requiring a degree of formality that is inconsistent with traditional arbitration procedures. See Concepcion, 131 S.Ct. at 1751. No such state law is before us, however, and it is premature to conclude that representative PAGA claims will necessarily result in "procedural morass" when there is no indication that state law limits parties' freedom to select informal procedures, or limit discovery, in PAGA arbitrations. Cf. Williams v. Superior Court, 236 Cal.App.4th 1151, 1156-58, 187 Cal.Rptr.3d 321 (2015) (upholding trial court's refusal to order statewide discovery in a PAGA action and observing that "[p]laintiff's proposed procedure, which contemplates jumping into extensive statewide discovery based only on the bare allegations of one local individual having no knowledge of the defendant's statewide practices would be a classic use of discovery tools to wage litigation rather than facilitate it").

In sum, the Iskanian rule does not conflict with the FAA, because it leaves parties free to adopt the kinds of informal procedures normally available in arbitration. It only prohibits them from opting out of the central feature of the PAGA's private enforcement scheme — the right to act as a private attorney general to recover the full measure of penalties the state could recover.

Our conclusion that the FAA does not preempt the Iskanian rule is bolstered by the PAGA's central role in enforcing California's labor laws. The Court has instructed that "[i]n all pre-emption cases" we must "start with the assumption that the historic police powers of the States were not to be superseded by the Federal Act unless that was the clear and manifest purpose of Congress." Medtronic, 518 U.S. at 485, 116 S.Ct. 2240 (quoting Rice v. Santa Fe Elevator Corp., 331 U.S. 218, 230, 67 S.Ct. 1146, 91 L.Ed. 1447 (1947)); see also Arizona v. United States, ___ U.S. ___, 132 S.Ct. 2492, 2503, 183 L.Ed.2d 351 (2012) (considering historic police powers of the State in analyzing obstacle preemption). "States possess broad authority under their police powers to regulate the employment relationship to protect workers within the State." Metro. Life Ins. Co. v. Massachusetts, 471 U.S. 724, 756, 105 S.Ct. 2380, 85 L.Ed.2d 728 (1985) (quoting DeCanas v. Bica, 424 U.S. 351, 356, 96 S.Ct. 933, 47 L.Ed.2d 43 (1976)).

Both the PAGA statute and the Iskanian rule reflect California's judgment about how best to enforce its labor laws. "[T]he Legislature's purpose in enacting the PAGA was to augment the limited enforcement capability of the Labor and Workforce Development Agency by empowering employees to enforce the Labor Code as representatives of the Agency." Iskanian, 59 Cal.4th at 383, 173 Cal.Rptr.3d 289, 327 P.3d 129. And the "sole purpose" of the Iskanian rule "is to vindicate the Labor and Workforce Development Agency's interest in enforcing the Labor Code." Id. at 388-89, 173 Cal.Rptr.3d 289, 327 P.3d 129. The explicit purpose of the rule barring enforcement of agreements to waive representative PAGA claims is to preserve the deterrence scheme the legislature judged to be optimal. See id. at 384, 173 Cal.Rptr.3d 289, 327 P.3d 129.

As the California Supreme Court has explained, a PAGA action is a form of qui tam action. See id. at 382, 173 Cal.Rptr.3d 289, 327 P.3d 129. Qui tam actions predate the FAA by several centuries. See Vermont Agency of Natural Res. v. United States ex rel. Stevens, 529 U.S. 765, 773-76, 120 S.Ct. 1858, 146 L.Ed.2d 836 (2000). The FAA was not intended to preclude states from authorizing qui tam actions to enforce state law. Nor, we think, was it intended to require courts to enforce agreements that severely limit the right to recover penalties for violations that did not directly harm the party bringing the action. The right to inform the state of violations that did not injure the informer is the very essence of a qui tam action. See id. at 775, 120 S.Ct. 1858. That qui tam actions can be difficult to arbitrate does not mean that the FAA requires courts to enforce private agreements opting out of the state's chosen method of enforcing its labor laws.

III. Severability of the PAGA Waiver

Sakkab has not argued that the PAGA waiver contained in the arbitration agreement rendered the entire arbitration agreement void. Nor has he disputed that he is required to arbitrate the four non-PAGA claims in the FAC. It is therefore clear that the non-PAGA claims in the FAC must be arbitrated.

We have held that the waiver of Sakkab's representative PAGA claims may not be enforced. It is unclear, however, whether the parties have agreed to arbitrate such surviving claims or whether they must be litigated instead.12 Accordingly, we reverse the district court's order dismissing the FAC, and return the issue to the district court and the parties to decide in the first instance where Sakkab's representative PAGA claims should be resolved, and to conduct such other proceedings as are consistent with this opinion.

REVERSED and REMANDED.

N.R. SMITH, dissenting:

In 1925, "Congress enacted the [Federal Arbitration Act] in response to widespread judicial hostility to arbitration." Am. Express Co. v. Italian Colors Rest., ___ U.S. ___, 133 S.Ct. 2304, 2308-09, 186 L.Ed.2d 417 (2013). Despite ninety years of Supreme Court precedent invalidating state laws deemed hostile to arbitration, the majority today displays this same "judicial hostility" to arbitration agreements. Our court employed the same "judicial hostility" in Laster v. AT & T Mobility LLC, 584 F.3d 849 (9th Cir.2009), rev'd sub nom. AT & T Mobility LLC v. Concepcion, 563 U.S. 333, 131 S.Ct. 1740, 179 L.Ed.2d 742 (2011), for which we were subsequently reversed.

In this case, rather than upholding the purposes of the Federal Arbitration Act ("FAA"), the majority upholds a "judicially created" state rule that prevents parties to an arbitration agreement from agreeing that their future arbitration will address individual claims arising between one employee and one employer. To conclude that the state rule (created by Iskanian v. CLS Transp. Los Angeles, LLC, 59 Cal.4th 348, 173 Cal.Rptr.3d 289, 327 P.3d 129 (2014)) does not frustrate the purposes of the FAA, the majority ignores the basic precepts enunciated in Concepcion. Because the majority should have applied Concepcion and deferred to the FAA's "liberal federal policy favoring arbitration," Moses H. Cone Mem'l Hosp. v. Mercury Constr. Corp., 460 U.S. 1, 24, 103 S.Ct. 927, 74 L.Ed.2d 765 (1983), rather than circumventing it, I must dissent.

I. Concepcion

Because the majority essentially ignores the Supreme Court's direction in Concepcion (a case very similar in detail to this case), I begin by describing this important precedent in some detail.

In Concepcion, a consumer contract provided for "arbitration of all disputes between the parties, but required that claims be brought in the parties' individual capacity, and not as a plaintiff or class member in any purported class or representative proceedings." 131 S.Ct. at 1744 (internal quotation marks omitted). Relying on the California Supreme Court's decision in Discover Bank v. Superior Court, 36 Cal.4th 148, 30 Cal.Rptr.3d 76, 113 P.3d 1100 (2005), abrogated by AT & T Mobility LLC v. Concepcion, 563 U.S. 333, 131 S.Ct. 1740, 179 L.Ed.2d 742 (2011), which established a rule that invalidated class action waivers in contracts of adhesion, a federal district court "found that the arbitration provision was unconscionable." Concepcion, 131 S.Ct. at 1745. We affirmed, holding that the Discover Bank rule was not preempted by the FAA, because it was simply "a refinement of the unconscionability analysis applicable to contracts generally in California." Id. Further, we rejected AT & T's argument that "class proceedings will reduce the efficiency and expeditiousness of arbitration." Id.

The Supreme Court reversed and concluded that a rule "[r]equiring the availability of classwide arbitration interferes with fundamental attributes of arbitration and thus creates a scheme inconsistent with the FAA." Id. at 1748. The Court held that, despite § 2's savings clause, even generally applicable contract defenses can violate the FAA if they serve as an obstacle to the objectives of the FAA. Id. The Court also identified the appropriate inquiry: If the state rule "stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress," the rule is preempted. Id. at 1753. As part of that inquiry, the Court clarified the purpose and objective of the FAA. "The overarching purpose of the FAA ... is to ensure the enforcement of arbitration agreements according to their terms so as to facilitate streamlined proceedings." Id. at 1748.

The Court then applied that analysis to the Discover Bank rule prohibiting the class action waivers. The Court explained that "arbitration is a matter of contract," id. at 1745, and "[a]lthough the [Discover Bank] rule does not require classwide arbitration, it allows any party to a consumer contract to demand it ex post," id. at 1750. Thus, rather than holding the parties to the terms of bilateral arbitration agreed upon in their contract, the Discover Bank rule allowed any party to subject the other to class-action arbitration. Id. The Court reasoned that "class arbitration, to the extent it is manufactured by Discover Bank rather than consensual, is inconsistent with the FAA." Id. at 1750-51.

The Court then provided three reasons why ex post, state-mandated class arbitration worked as an obstacle to the FAA's purposes and objectives. First, "the switch from bilateral to class arbitration sacrifices the principal advantage of arbitration — its informality — and makes the process slower, more costly, and more likely to generate procedural morass than final judgment." Id. at 1751. The Court explained that "[i]n bilateral arbitration, parties forgo the procedural rigor and appellate review of the courts in order to realize the benefits of private dispute resolution: lower costs, greater efficiency and speed, and the ability to choose expert adjudicators to resolve specialized disputes." Id. (quoting Stolt-Nielsen S.A. v. AnimalFeeds Int'l Corp., 559 U.S. 662, 685, 130 S.Ct. 1758, 176 L.Ed.2d 605 (2010)). Because of the complex nature of class litigation, those benefits are lost when parties are forced to pursue class arbitration rather than the bilateral arbitration to which the parties agreed in their agreement. See Concepcion, 131 S.Ct. at 1751.

Second, the Court reasoned that "class arbitration requires procedural formality." Id. "For a class-action money judgment to bind absentees in litigation, class representatives must at all times adequately represent absent class members, and absent members must be afforded notice, an opportunity to be heard, and a right to opt out of the class." Id. (citing Phillips Petroleum Co. v. Shutts, 472 U.S. 797, 811-12, 105 S.Ct. 2965, 86 L.Ed.2d 628 (1985)). The Court found it unlikely that Congress, when passing the FAA, envisioned requiring such complex procedural requirements in an arbitration context. Id. at 1751-52.

Third, "class arbitration greatly increases risks to defendants." Id. at 1752. The Court explained:

Id.

After presenting these three reasons why ex post, state-mandated class arbitration worked as an obstacle to the objectives of the FAA, the Court addressed the argument that class arbitration was "necessary to prosecute small-dollar claims that might otherwise slip through the legal system." Id. at 1753. The Court rejected the argument, reasoning that "States cannot require a procedure that is inconsistent with the FAA, even if it is desirable for unrelated reasons." Id. Thus, the Court concluded that "[b]ecause `it stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress,' California's Discover Bank rule is preempted by the FAA." Id. (quoting Hines v. Davidowitz, 312 U.S. 52, 67, 61 S.Ct. 399, 85 L.Ed. 581 (1941)).

II. FAA's preemption of the Iskanian rule

The majority cannot distinguish the present case from the principles outlined in Concepcion. Concepcion dealt with a state rule that prohibited class-action waivers in arbitration agreements. The present case involves a state rule that prohibits representative action waivers in arbitration agreements.

The Discover Bank rule and the Iskanian rule are sufficiently analogous to guide our decision.1 Class actions and PAGA actions both allow an individual (who can normally only raise his or her own individual claims) to bring an action on behalf of other people or entities. See Wal-Mart Stores, Inc. v. Dukes, ___ U.S. ___, 131 S.Ct. 2541, 2550, 180 L.Ed.2d 374 (2011) (reasoning that "[t]he class action is `an exception to the usual rule that litigation is conducted by and on behalf of the individual named parties only.'" (quoting Califano v. Yamasaki, 442 U.S. 682, 700-01, 99 S.Ct. 2545, 61 L.Ed.2d 176 (1979))); Arias v. Superior Court, 46 Cal.4th 969, 986, 95 Cal.Rptr.3d 588, 209 P.3d 923 (2009) (explaining that an aggrieved employee suing under PAGA "does so as the proxy or agent of the state's labor law enforcement agencies" and a judgment binds the state law enforcement agencies and nonparty aggrieved employees). Likewise, waivers of class actions and representative actions both seek to prevent the parties from raising claims on behalf of others by limiting arbitration to only those claims arising between the parties to the agreement.

Because the class action and representative action waivers fulfill the same purpose, it should be no surprise that they are often (if not always) grouped together and use similar language.2 The common inclusion of both class action and representative waivers in arbitration agreements indicates that one waiver, without the other, would not be sufficient to create the type of arbitration desired by the parties. For example, an arbitration agreement that includes a class waiver without including a representative waiver would not effectively limit the arbitration to only individual claims arising between the parties to the agreement. Thus, both the Discover Bank rule and Iskanian rule (by invalidating these waivers) act to prevent contracting parties from crafting arbitration agreements in a way that limits the arbitration to claims arising solely between the contracting parties.3

The majority emphasizes the differences between class actions and PAGA claims. But differences between the two types of actions, no matter how plentiful the majority would want to characterize them, do not change the fact that a rule prohibiting the waiver of either type of action in an arbitration agreement interferes with the parties' freedom to limit their arbitration only to those claims arising between the contracting parties. The majority recognizes that one of the key problems with the Discover Bank rule in Concepcion was that "it could not be applied to arbitration agreements without interfering with parties' freedom to select informal procedures" for their own arbitrations. Maj. Op. at 435 (emphasis added). In an attempt to apply that principle to the Iskanian rule, the majority reasons that "the Iskanian rule does not conflict with the FAA, because it leaves parties free to adopt the kinds of informal procedures normally available in arbitration." Maj. Op. at 439 (emphasis added). However, the majority's reasoning overlooks the simple fact that, by preventing parties from limiting arbitration only to individual claims arising between the two contracting parties, the Iskanian rule interferes with the parties' freedom to craft arbitration in a way that preserves the informal procedures and simplicity of arbitration (just as did the Discover Bank rule). By requiring the availability of representative PAGA claims in arbitration (i.e., claims not specific to the contracting parties), the Iskanian rule interferes with the fundamental attributes of arbitration and thus creates a scheme inconsistent with the FAA. See Concepcion, 131 S.Ct. at 1748.

Because the effect of the waivers before challenged in Concepcion and now challenged in this case are similar, the analytic framework and reasoning in Concepcion is directly applicable. Just like the Discover Bank rule in Concepcion, the Iskanian rule does not require the parties to arbitrate representative PAGA claims. However, by invalidating representative waivers in an arbitration agreement (as applied to PAGA claims), the rule allows any party to an employment contract to demand arbitration of a representative PAGA claim ex post, despite the fact that the parties agreed to forgo such a demand in the agreement, where the parties have already agreed to waive all other forums. See id. at 1750. As explained below, by (a) preventing parties from crafting arbitration agreements to limit the arbitration only to individual claims and (b) allowing ex post demand for the arbitration of representative PAGA actions, the Iskanian rule forces the parties to lose the benefits of arbitration and frustrates the purposes of the FAA. The Iskanian rule burdens arbitration in the same three ways identified in Concepcion: it makes the process slower, more costly, and more likely to generate procedural morass; it requires more formal and complex procedure; and it exposes the defendants to substantial unanticipated risk. See id. at 1751-52.

A. The Iskanian rule makes arbitration slower, more costly, and more likely to generate procedural morass.

First, the switch from the arbitration of only individual claims to the arbitration of representative PAGA claims on behalf of the State and all other aggrieved employees "sacrifices the principal advantage of arbitration — its informality — and makes the process slower, more costly, and more likely to generate procedural morass." Concepcion, 131 S.Ct. at 1751.4 When an aggrieved employee raises a representative PAGA claim, he must first show that his employer violated the California Labor Code. If the PAGA claimant is successful in proving that his or her employer violated the Labor Code, civil penalties are assessed against the employer in the amount of "one hundred dollars ($100) for each aggrieved employee per pay period for the initial violation and two hundred dollars ($200) for each aggrieved employee per pay period for each subsequent violation." Cal. Labor Code § 2699(f)(2). Thus, rather than merely focusing on the individual employee, the hours he worked, and the damages due to him, an arbitrator overseeing a representative PAGA claim would have to make specific factual determinations regarding (1) the number of other employees affected by the labor code violations, and (2) the number of pay periods that each of the affected employees worked. Because of the high stakes involved in these determinations, both of these issues would likely be fiercely contested by parties. In arbitrations involving large companies, the arbitrator would be required to make individual factual determinations regarding the employment status for hundreds or thousands of employees, none of whom are party to such arbitration. Further, the employee who brought the representative PAGA claim would not initially have access to the information needed to prove the number of affected employees or the number of pay periods they worked. Therefore, some kind of discovery would need to take place, requiring the employer to divulge the necessary documents (potentially a tremendous number of payroll and employment forms) to the PAGA claimant. This would not be a minor undertaking. All of these additional tasks and procedures necessarily makes the process substantially slower, substantially more costly, and more likely to generate procedural morass than non-representative, individual arbitration.

Despite these additional procedural hurdles present in a PAGA claim, the majority denies that representative PAGA claims would make the process slower, substantially more costly, and more likely to generate procedural morass. Instead, the majority reasons that any potential complexity of PAGA claims does not render such claims incompatible with arbitration. The majority holds that "arbitration is well suited to resolving complex disputes, provided that the parties are free to decide how the arbitration will be conducted." Maj. Op. at 438. However, that rationale ignores the problem the Iskanian rule creates; the parties had already decided how their arbitration would be conducted (individually, in a non-representative capacity). The Iskanian rule instead allows the employee, ex post, to demand arbitration of representative claims.5 Although two parties certainly could agree to arbitrate representative PAGA claims when they construct and sign the arbitration agreement, requiring the parties to resolve representative actions (after a contrary agreement between the parties has been struck) renders the arbitration much more complex, costly, and time consuming than what the parties had agreed to do. "Arbitration is a matter of contract," and "[t]he overarching purpose of the FAA ... is to ensure the enforcement of arbitration agreements according to their terms so as to facilitate streamlined proceedings." Concepcion, 131 S.Ct. at 1745, 1748. When the parties have agreed to a specific, streamlined method of arbitration (such as the arbitration of individual claims only), and a relevant, state rule forces the parties to forego their chosen method of dispute resolution in favor of a procedure that is more costly and time consuming, the state rule frustrates the purposes of the FAA. As the Concepcion Court explained in the class arbitration context, "The conclusion follows that class arbitration, to the extent it is manufactured by Discover Bank rather than consensual, is inconsistent with the FAA." Id. at 1750-51. Likewise, it follows that representative arbitration, to the extent it is manufactured by Iskanian rather than consensual, is inconsistent with the FAA.

The majority further reasons that, even if representative PAGA actions will make the arbitration process slower or more costly, the same could be said of any complex or fact-intensive claim. The majority compares representative PAGA actions to antitrust claims as an example of another type of claim that has the potential to make arbitration slower and more costly. This comparison is incorrect. Instead, the principle enumerated in Concepcion requires us to compare a representative PAGA claim (what the Iskanian rule would require) to individual, bilateral arbitration (what the parties had agreed to do in their arbitration agreement). Had the majority conducted the correct comparison, it would be forced to conclude that the arbitration of representative PAGA claims is certainly more likely to make the process slower, substantially more costly, and more likely to generate procedural morass than non-representative, individual arbitration.

B. The Iskanian rule requires more formal and complex procedure.

Second, representative PAGA actions are procedurally more complex than the arbitration of solely individual claims. Specifically, the discovery required in a representative PAGA claim is vastly more complex than would be required in an individual arbitration. In an individual arbitration, the employee already has access to all of his own employment records (or can easily obtain them from his employer). He knows how long he has been working for the employer and can easily determine how many pay periods he has been employed. Likewise, he knows whether he has been affected by the Labor Code violations he is alleging and can provide individual evidence to support his claims. However, in a representative PAGA claim, the individual employee does not have access to any of this information on behalf of all the other potentially aggrieved employees. Therefore, the employee must be able to obtain the information from the employer or the other employees. The discovery necessary to obtain these documents from the employer would be significant and substantially more complex than discovery regarding only the employee's individual claims. The majority's proposed solution to this complexity, the use of hypothetical informal procedures instead of more formal ones, misses the mark. The procedural complexity present in representative PAGA claims is not attributable to the use of formal versus informal procedures. Instead, such complexity is a function of the sheer number of tasks and procedural hurdles present in bringing a representative PAGA claim.

The majority completely dismisses the procedural complexity that a representative PAGA claim entails. As the majority suggests, the arbitration of representative PAGA claims may not be as procedurally complex as class arbitrations. See Concepcion, 131 S.Ct. at 1751-52. However, (for the second time), the majority makes the wrong comparison. Instead of comparing a representative PAGA claim to individual, bilateral arbitration (i.e., what the parties had agreed to versus what the Iskanian rule would require, as the principle enumerated in Concepcion requires), the majority compares a representative PAGA claims to class arbitration and concludes that, because the two procedures are different, a representative PAGA action is not inconsistent with arbitration. Had the majority conducted the correct comparison, the majority would be forced to conclude that the arbitration of representative PAGA claims is certainly more procedurally complex than bilateral arbitration.

The majority holds that any potential procedural complexity will depend on the arbitration procedures the parties select and that the parties may streamline complex PAGA claims by agreeing to informal procedures. However, this type of reasoning was also considered and rejected in Concepcion, where the plaintiff contended that because the parties could agree to informal procedures, class procedures were not necessarily incompatible with arbitration. 131 S.Ct. at 1752-53. Again, the majority fails to recognize that, although the parties could choose to employ procedures to address the complexity inherent in representative PAGA actions, they cannot be required by a state to do so. As the Court in Concepcion reasoned:

Id. (citation omitted). Therefore, although parties may choose to employ complex discovery procedures, as would be required by a representative PAGA claim, state law cannot demand that they do so. Here, Sakkab and Luxottica chose to pursue individual, non-representative arbitration. Therefore, the Iskanian rule frustrates the purposes of the FAA by requiring them to undertake the procedural complexity of representative PAGA claims.

C. The Iskanian rule exposes the defendants to substantial unanticipated risk.

Third, the arbitration of representative PAGA claims greatly increases the risk to employers. See id. at 1752. Rather than awarding damages for Labor Code violations for just one employee, representative PAGA claims award damages for all affected employees. Cal. Labor Code § 2699(f)(2). A representative PAGA claim could therefore increase the damages awarded in arbitration by a multiplier of a hundred or thousand times (depending on the size of the company). Thus, the concerns expressed in Concepcion are just as real in the present case:

Concepcion, 131 S.Ct. at 1752.

The majority admits that representative PAGA actions may involve high stakes, but then concludes that high stakes, alone, cannot lead to invalidation of the Iskanian rule and again compares PAGA actions to antitrust claims in illustrating its argument. Once again, (for the third time), the majority completely misses the point of Concepcion and invokes an incorrect comparison. Parties to an arbitration could agree to arbitrate high stakes issues. However, a state court cannot "force such a decision." Id. Comparing such high stakes PAGA actions to antitrust claims is not relevant. Again, the majority should have compared high stakes PAGA actions against the individual, bilateral arbitration that the parties actually agreed to undertake. When Sakkab and Luxottica entered into their arbitration agreement, they chose to limit the risk to which they were subjecting themselves to damages arising out of individual claims between the two parties. That is all. The Iskanian rule invalidates that decision and allows Sakkab to demand ex post arbitration of claims outside of that framework. Concepcion declared that this increased risk, to which the parties did not agree, frustrated the purposes of the FAA. When combined with the increased cost, time, and procedural complexity inherent in the arbitration of representative PAGA claims (when compared to solely individual arbitration), the increased risk to a defendant works as yet another way that the benefits of arbitration are lost through application of the Iskanian rule.

D. The Iskanian rule cannot be justified on state policy grounds.

The majority holds that its decision "is bolstered by the PAGA's central role in enforcing California's labor laws" and that "[b]oth the PAGA statute and the Iskanian rule reflect California's judgment about how best to enforce its labor laws." Maj. Op. at 439. However, under Concepcion, "States cannot require a procedure that is inconsistent with the FAA, even if it is desirable for unrelated reasons." 131 S.Ct. at 1753. As is evidenced by our discussion of the effective vindication exception to the FAA in Ferguson v. Corinthian Colls., Inc., when it comes to arbitration agreements, "`[w]e have no earthly interest (quite the contrary) in vindicating' a state law."6 733 F.3d 928, 936 (9th Cir.2013) (quoting Italian Colors Rest., 133 S.Ct. at 2320 (Kagan, J., dissenting)). Thus, if a state law violates or frustrates the FAA, the state law must give way, even if such a decision prevents the state's interest from being vindicated. Ferguson, 733 F.3d at 936-37. By relying so heavily on state policy grounds to support its decision, the majority strays awfully close to invocation of the effective vindication doctrine, which the majority admits does not apply to the present case. Therefore, because the Iskanian rule serves as an obstacle to the objectives of the FAA, the desirability and importance of the rule to the State's policies and purposes cannot save it.7

Although the State's interest in an employee's ability to bring PAGA claims is ultimately irrelevant to the Concepcion analysis, it is important to note that preemption of the Iskanian rule does not preempt PAGA itself. In fact, PAGA could continue to play a meaningful role in California's labor law enforcement scheme without the Iskanian rule. First, any employee not subject to an arbitration agreement waiving such actions is free to bring a PAGA claim. In the present case, Luxottica gave Sakkab the option to opt out of the arbitration agreement if he simply returned the opt-out form to Luxottica within a specified period of time. We have previously reasoned that an opt out provision prevents an arbitration agreement from being a contract of adhesion, and supports the enforceability of the agreements. See Circuit City Stores, Inc. v. Ahmed, 283 F.3d 1198, 1199-1200 (9th Cir. 2002). Thus, employers are incentivized to include opt out provisions in their arbitration agreements. Any employees who opt out of arbitration, or whose employers do not utilize arbitration, will be free to bring PAGA claims. Second, PAGA requires that potential claimants provide notice to the State before pursuing a PAGA action. Cal. Labor Code § 2699.3. As no one has asserted that the State of California is prevented from raising the labor violations on its own, the notice provision of PAGA and the implementation of statutory damages for Labor Code violations can continue to provide a meaningful benefit to the State of California. Finally, inasmuch as a PAGA claim can be limited to damages stemming from a single employee's employment, PAGA continues to provide an opportunity for individuals to collect damages on behalf of the State, even in arbitration. Luxottica has expressly argued that an "individual" PAGA claim could be raised under its arbitration agreement with Sakkab. Although the existence of "individual" PAGA claims is disputed, see Reyes v. Macy's, Inc., 202 Cal.App.4th 1119, 1123, 135 Cal.Rptr.3d 832 (2011) (holding that a PAGA claimant may not bring an individual PAGA claim), the Iskanian court expressly chose not to decide the issue. See Iskanian, LLC, 59 Cal.4th at 384, 173 Cal.Rptr.3d 289, 327 P.3d 129. Instead, the court reasoned that, even if such claims are available, individual PAGA claims would not "result in the penalties contemplated under the PAGA to punish and deter employer practices that violate the rights of numerous employees under the Labor Code." Id. But, once again, the state's purpose is irrelevant. A state may not insulate causes of action from arbitration by declaring that the purposes of the statute can only be satisfied via class, representative, or collective action. If the rule conflicts with the objectives of the FAA, the state rule must give way. Concepcion, 131 S.Ct. at 1753.

Because the Iskanian rule stands as an obstacle to the purposes and objectives of the FAA, there is no question — the rule must be preempted. Preemption would be consistent both with the Supreme Court's controlling decision in Concepcion and the FAA's "liberal federal policy favoring arbitration." Moses H. Cone Mem'l Hosp., 460 U.S. at 24, 103 S.Ct. 927. Numerous state and federal courts have attempted to find creative ways to get around the FAA. We did the same in Laster, and were subsequently reversed in Concepcion. The majority now walks that same path. Accordingly, I would affirm.