OPINION OF THE COURT

SMITH, J.

The United States Court of Appeals for the Second Circuit has asked us what deference a court should pay to an agency's decision, made for its own enforcement purposes, to construe a statute prospectively only. The agency in question, the New York State Department of Labor, has submitted an amicus brief to us in which it renounces any claim to deference in this litigation. This leads us to give a narrow answer to the Second Circuit's question: We will not give the agency more deference than it claims for itself.

I

In this lawsuit, the federal courts have been called on to interpret New York's "prevailing wage" statute, which requires that certain employees upon "public works" be paid "not less than the prevailing rate of wages" as defined by law (Labor Law § 220 [3] [a]). The statute has been held applicable only to workers employed in construction, maintenance or repair work (see Matter of Golden v Joseph, 307 N.Y. 62, 66-67 [1954]; Matter of Pinkwater v Joseph, 300 N.Y. 729 [1950]). The dispute between the parties, to the extent relevant here, is whether workers engaged in the testing and inspection of certain fire protection equipment are covered by the statute. On December 31, 2009, the Department's Commissioner issued an opinion letter saying that the workers were covered, but that "because there has been much confusion in the past about the Departments [sic] position as to the applicability of the prevailing wage law to this work, this opinion shall be applied prospectively to contracts that are put out for bid after January 1, 2010."

The Second Circuit held that the Department's "substantive construction of the statute (as covering testing and inspection work)" is entitled to deference (Ramos v SimplexGrinnell LP, 740 F.3d 852, 856 [2d Cir 2014]). The court was in doubt, however, as to whether it should defer to the Department's ruling that its opinion would be applied prospectively only, and it therefore certified the following question to us:

In its amicus brief in this Court, the Department asserts that no deference is due to it by the courts deciding this litigation. It says that its prospectivity ruling "has no relevance to a private contract action such as this one" and therefore "provides no occasion for deference" (brief for amicus curiae New York State Department of Labor at 16, 17). We conclude that this determines our answer to the Second Circuit's question. We will not give the agency more deference than it is asking for. It is inherent in the very idea of deference to an administrative agency that the agency has determined that its view of the law merits deference.

We add a word to make clear the very limited nature of our decision. The agency appears to assume that, while it renounces deference in "private litigation," it may nevertheless seek deference when the issue is "its own enforcement of Labor Law § 220" (id. at 15-16). Thus, it seems that in the Department's view a court that did not defer to the agency in a suit initially brought in court would nevertheless defer in its review of an administrative determination—so that cases might come out differently, on identical facts, depending on whether they were originally lawsuits or administrative proceedings. We have no occasion to consider the correctness of this assumption. Obviously, the fact that we will not give an agency more deference than it seeks does not mean that it cannot be given less.

II

The Second Circuit has also asked us another question, prompted by the opinion of the Federal District Court that was before it on appeal (Ramos v SimplexGrinnell LP, 796 F.Supp.2d 346 [ED NY 2011]). The District Court held that, even if Labor Law § 220, correctly understood, covered testing and inspection work, plaintiffs could still not show that defendant breached its contracts with public entities to pay prevailing wages as required by section 220. The District Court's reasoning was that, because of the acknowledged confusion surrounding this question until the Commissioner's opinion was issued, defendant did not have reason to believe when it entered the contracts that its obligation included testing and inspection work (id. at 368).

The Second Circuit doubted the correctness of the District Court's conclusion, saying:

The Second Circuit therefore certified to us the question:

We adopt the reading that the Second Circuit found "[a]t least as plausible" as the alternative (id. at 859). An agreement to comply with a statute is an agreement to comply with it as correctly interpreted, whether or not the correct interpretation was known to the parties at the time of contracting. This is particularly clear where, as here, a contractual clause agreeing to comply is required by the statute itself (see Labor Law § 220 [2]). The legislature surely meant that the parties must agree to comply with the law as correctly understood, not as the parties may have misunderstood it.

The certified questions should be answered in accordance with this opinion.

Following certification of questions by the United States Court of Appeals for the Second Circuit and acceptance of the questions by this Court pursuant to section 500.27 of this Court's Rules of Practice, and after hearing argument by counsel for the parties and consideration of the briefs and the record submitted, certified questions answered in accordance with the opinion herein.