RECOMMENDED FOR FULL-TEXT PUBLICATION
                                    Pursuant to Sixth Circuit Rule 206
                                            File Name: 06a0431p.06

                       UNITED STATES COURT OF APPEALS
                                       FOR THE SIXTH CIRCUIT
                                         _________________


                                                    X
                                                     -
 VANGUARD FIRE & SUPPLY CO., INC., d/b/a

                     Petitioner/Cross-Respondent, -
 VANGUARD FIRE & SECURITY SYSTEMS,
                                                     -
                                                     -
                                                         Nos. 05-2497/2630

                                                     ,
           v.                                         >
                                                     -
                                                     -
                     Respondent/Cross-Petitioner, -
 NATIONAL LABOR RELATIONS BOARD,

                                                     -
                                                     -
                                                     -
 ROAD SPRINKLER FITTERS LOCAL UNION NO. 669,
                                                     -
 U.A., AFL-CIO,
                                       Intervenor. -
                                                    N
              On Petition for Review and Cross-Application for Enforcement
                   of an Order of the National Labor Relations Board.
                      Nos. 7-CA-45823; 7-CA-46478; 7-CA-46727.
                                       Argued: September 20, 2006
                                Decided and Filed: November 21, 2006
      Before: BATCHELDER and MOORE, Circuit Judges; HOOD, Chief District Judge.*
                                            _________________
                                                 COUNSEL
ARGUED: Timothy J. Ryan, RYAN & LYKINS, Grand Rapids, Michigan, for Petitioner. Stacy
G. Zimmerman, NATIONAL LABOR RELATIONS BOARD, Washington, D.C., for Respondent.
Jason J. Valtos, OSBORNE LAW OFFICES, Washington, D.C., for Intervenor. ON BRIEF:
Timothy J. Ryan, RYAN & LYKINS, Grand Rapids, Michigan, for Petitioner. Stacy G.
Zimmerman, Jill Griffin, Aileen A. Armstrong, NATIONAL LABOR RELATIONS BOARD,
Washington, D.C., for Respondent. Jason J. Valtos, OSBORNE LAW OFFICES, Washington, D.C.,
for Intervenor.




        *
           The Honorable Joseph M. Hood, Chief United States District Judge for the Eastern District of Kentucky,
sitting by designation.


                                                       1
Nos. 05-2497/2630                 Vanguard Fire & Supply Co. v. NLRB                                          Page 2


                                              _________________
                                                  OPINION
                                              _________________
         HOOD, Chief District Judge. This appeal involves a petition for review of a final Decision
and Order of the National Labor Relations Board (the “Board” or “NLRB”) and a cross-petition for
enforcement of the Decision and Order. Petitioner and Cross-Respondent, Vanguard Fire and
Supply Company, Inc. (“Vanguard”), appeals the Decision and Order of the Board adopting the
decision of Administrative Law Judge Keltner Locke (“ALJ Locke”) that Vanguard violated the
National Labor Relations Act, as amended, 29 U.S.C. § 151 et seq. (the “Act”), by (i) withdrawing
its recognition of Sprinkler Fitters Local Union No. 669 (the “Union”) based upon a disaffection
petition signed by fewer than a majority of the employees in the collective-bargaining unit;
(ii) unilaterally implementing changes to its cellular telephone bill reimbursement policy without
notice to or bargaining with the Union; and (iii) refusing to bargain with the Union unless the Union
complied with Vanguard’s demand for a bargaining agenda. Although the Board          found additional
unfair labor practices, those practices are not the subject of Vanguard’s appeal.1
        Vanguard appeals the Board’s final Order, claiming there was not substantial evidence in the
record to support the Board’s decision that Vanguard violated the Act. The Board cross-petitions
this Court for summary enforcement of the unchallenged portions of the Decision and Order.
                                             I. INTRODUCTION
                                 A. Factual and Procedural Background
        Vanguard “fabricates, installs, and maintains fire suppression and security products,
including sprinkler systems, fire extinguishers, kitchen hoods, and alarm systems.” Vanguard has
four facilities in Michigan that install fire security systems throughout the state. Vanguard installs
two types of systems: (1) sprinkler systems that spray liquid (i.e. water) onto the area below; and
(2) “special hazard” or chemical systems that spray a gas or powder onto an area that may be harmed
by water (i.e. computer room or paper storage areas).
       In March or April of 2001, Vanguard’s installers began organizing a union. Following a
Board-conducted election in July of 2001, where the Union won 9-3, the Union was certified as the
representative of employees who were “engaged in the installation and service of fire protection
sprinkler pipe and chemical system pipe.” The certification did not include other employees.
         Following unsuccessful contract negotiations, the Union filed unfair labor practice charges
with the Board which included allegations that the company unlawfully subcontracted for
bargaining work. Pursuant to a settlement agreement entered into on June 5, 2002, the parties agreed
that the modified description of the bargaining unit work would include “installation and repair of
fire sprinkler systems without geographic limitation, and restaurant systems.” The bargaining unit
work, thus, did not include “installation and repair of other chemical or gas special hazard systems”
or the testing or inspection of the systems. These charges are not part of the Order under review
by this Court, but the modifications made to the scope of the bargaining unit were effective at the
time of the company’s withdrawal of recognition. Negotiations for an initial contract continued with
the above-mentioned changes to the bargaining unit.


         1
           Vanguard did not challenge the Board’s findings that Vanguard violated its collective bargaining duties by
granting higher starting hourly wages, higher salary increases, and higher vacation accrual rates to certain employees.
Nos. 05-2497/2630            Vanguard Fire & Supply Co. v. NLRB                              Page 3


        In early 2003, the Union filed the charges at issue in the instant appeal which allege
Vanguard began to charge its bargaining unit employees for cell phone overages, which the Union
contended, was a unilateral change in the terms and conditions of employment without notice to or
bargaining with the Union, as required by the Act. The Union also alleged that Vanguard committed
an unfair labor practice by demanding on July 16, 2003, that the Union provide a detailed agenda
prior to the August 19, 2003, scheduled meeting and refusing to negotiate after twice receiving
agendas.
        In addition, the Union’s charges included the allegation that Vanguard illegally withdrew
recognition of the Union. Approximately two months after refusing to meet, Vanguard formally
withdrew its recognition of the Union by letter dated October 15, 2003. In the letter, Vanguard
stated that it received a petition signed by a majority of the employees in the bargaining unit which
stated that they no longer wished to be represented by the Union. The disaffection petition was
signed by eight employees. At the administrative hearing, the parties stipulated that at the time
Vanguard withdrew recognition, the bargaining unit included eleven employees. The parties did not
agree, however, as to the bargaining unit status of four of the eight employees who signed the
petition. The contested employees were Sean Wiggers, Evan Timmerman, Nate Sloan, and Austin
Aamodt.
        The charges were investigated and a complaint was issued, after which a hearing before ALJ
Locke ensued in March of 2004. At the hearing, General Counsel to the Union amended the
complaint to add an alternative theory – if the ALJ found that Sean Wiggers, Evan Timmerman, and
Nate Sloan were employees in the bargaining unit, then Vanguard improperly granted discretionary
wage increases without bargaining with or notice to the Union. The record indicates that ALJ
Locke recognized this amended count was pled in the alternative. Subsequent to the amendment
at the hearing, Vanguard admitted these allegations and added the defense that these allegations
were untimely.
       On September 20, 2004, ALJ Locke issued his decision and order which held that Vanguard
committed unfair labor practices by: (1) unilaterally implementing changes to the cell phone
reimbursement policy without notice or bargaining; (2) refusing to bargain unless the Union first
complied with demand for an agenda; (3) withdrawing recognition of the Union without the required
majority of bargaining unit employees’ signatures; and (4) withdrawing recognition of the Union
based on a petition that was tainted by the company’s prior unfair practices.
        Vanguard filed exceptions to ALJ Locke’s decision, which was affirmed in most part by the
Board. The Board held that it was unlawful for Vanguard to withdraw recognition without the
support of a majority of bargaining unit members, and thus found it unnecessary to decide whether
the disaffection petition was tainted by prior unfair practices.
                                B. National Labor Relations Act
         The Act makes it unlawful for an employer to interfere with the rights of employees to
organize. See 29 U.S.C. § 158. Specifically at issue in this appeal are Sections 8(a)(1) and (5) of
the Act. Section 8(a)(1) of the Act makes it unlawful for an employer “to interfere with, restrain,
or coerce employees in the exercise of the rights guaranteed in section 157 of this title.” 29 U.S.C.
§ 158(a)(1). Section 8(a)(5) of the Act makes it unlawful for an employer to “refuse to bargain
collectively with the representatives of his employees, subject to the provisions of section 159(a)
of this title.” 29 U.S.C. § 158(a)(5).
Nos. 05-2497/2630            Vanguard Fire & Supply Co. v. NLRB                                Page 4


                                          II. ANALYSIS
                     A. Summary Enforcement of Uncontested Findings
         Vanguard failed to challenge the Board’s decision that Vanguard violated Sections 8(a)(1)
and (5) of the Act by granting wage increases, higher starting wages, and higher vacation accrual
rates to certain employees without first giving notice or an opportunity to bargain to the Union.
Vanguard also failed to contest the Board’s finding that Vanguard violated Sections 8(a)(1) and
(5) of the Act by refusing to provide the Union with requested information about jobs that had been
awarded to Vanguard but had yet to commence. As this Court has previously stated, “[a]n
employer’s ‘failure to address or take issue with the Board’s findings and conclusions with regard
to . . . violations [of the Act] effectively results in abandonment of the right to object to those
determinations.’ ” NLRB v. Talsol Corp., 

, 793 (6th Cir. 1998) (quoting NLRB v.
Kentucky May Coal Co., Inc., 

, 1241 (6th Cir. 1996)).
        In cases in which the employer fails to challenge a portion of the Board’s findings on appeal,
this Court may “summarily enforce the Board’s order with regard to those issues.” 

; see also NLRB v. Gen. Fabrications Corp., 

, 231-32 (6th Cir. 2000) (stating that
the Board’s uncontested findings of unfair labor practices are entitled to summary affirmance).
When an employer fails to challenge certain adverse findings of the Board, as did Vanguard in this
appeal, the employer effectively admits the truth of those findings and loses the right to object to
them. Kentucky May Coal Co., 

. Accordingly, the Board is entitled to summary
enforcement as to the uncontested portions of its Decision and Order.
                                      B. Standard of Review
        This Court reviews the NLRB’s “legal conclusions de novo and its factual findings under a
substantial evidence standard.” Harborside Healthcare, Inc. v. NLRB, 

, 208 (6th Cir.
2000) (quoting Ky. River Cmty. Care, Inc. v. NLRB, 

, 449 (6th Cir. 1999)). Factual
findings are supported by substantial evidence if a reasonable mind might accept the evidence as
“adequate to support a conclusion.” Lee v. NLRB, 

, 754 (6th Cir. 2003). Even if this
Court’s conclusion as to the substantiality of factual evidence would be different under de novo
review, it “defer[s] to the Board’s reasonable inferences and credibility determinations” as to factual
evidence. Mt. Clemens Gen. Hosp. v. NLRB, 

, 844 (6th Cir. 2003). In reviewing the
NLRB’s interpretation of the Act, this Court is deferential to the Board’s interpretation. 

as the NLRB’s interpretation of the statute is “reasonably defensible,” this Court will not disturb
such interpretation. 

standard of review, we must decide whether there is substantial evidence to
support the Board’s findings that Vanguard violated the Act by (1) withdrawing union recognition;
(2) insisting that the Union produce an agenda; and (3) enforcing the cellular telephone
reimbursement policy. For the reasons stated below, we find that there is substantial evidence to
support each of the Board’s findings.
              C. Withdrawal of Union Recognition Based on Employee Petition
       A letter dated October 15, 2003, from Vanguard’s attorney, Timothy Ryan, to the Union’s
attorney, James Tucker, stated that Vanguard was withdrawing its recognition of the Union based
on an employee petition signed by a majority of the employees in the bargaining unit. In order to
comply with Section 8(a)(5) of the Act, an employer may only withdraw recognition “where the
union has actually lost the support of the majority of the bargaining unit employees.” Levitz
Furniture Co. of the Pacific, Inc., 

, 717 (2001). This Court noted in Pleasantview
Nursing Home, Inc. v. NLRB, 

, 764 (6th Cir. 2003), that lack of majority support may
be shown by a petition signed by a majority of members of the bargaining unit. The issue in this
Nos. 05-2497/2630                 Vanguard Fire & Supply Co. v. NLRB                                            Page 5


case is whether the disaffection petition relied on by Vanguard in withdrawing its recognition of the
Union indicated that the Union no longer enjoyed the support of a majority of the bargaining unit
members.
        There was substantial evidence on the record for the Board to conclude that, despite the
disaffection petition signed by eight employees2, the Union continued to enjoy the support of the
majority of the bargaining unit members. Vanguard alleged that the bargaining unit consisted of
fourteen members and that seven of them signed the disaffection petition, resulting in a loss of
majority support for the Union. The Union alleged, and the Board found, that the bargaining unit
consisted of eleven members and that only four of them signed the disaffection petition, meaning
that the Union continued to enjoy the support of seven out of eleven, a definite majority, of the
bargaining unit members. The parties stipulated that eleven employees were members of the
bargaining unit. The three employees whose bargaining unit status was uncertain included Nathan
Sloan, Evan Timmerman, and Sean Wiggers.
        During the course of initial contract negotiations, the Union filed unfair labor charges
against Vanguard. On June 5, 2002, the Union and Vanguard entered into an informal settlement
agreement which modified the description of bargaining unit work to consist of:
         the installation and repair of fire sprinkler systems without geographic limitation, and
         restaurant systems of the type performed by Marty Shields, but shall not include the
         installation and repair of any other chemical or gas special hazard systems, and shall
         not include the visual inspection and related testing of any systems.
The Board found that because Sloan, Timmerman, and Wiggers were not performing bargaining unit
work when they signed the petition, their signatures on the petition were not to be counted.
       Nathan Sloan testified that he began working for Vanguard in June 2002 as a shop employee
and remained in that position until he was laid off for one day on August 1, 2003. Maintenance shop
work was not included in the description of bargaining unit work. When Sloan returned to work he
was told he would be a sprinkler fitter, a position within the bargaining unit, however, the Board
found that he spent much of August continuing to work in the shop. During portions of the final
week of August and the first week of September, Sloan’s work included sprinkler installation,
however, the remainder of September was again spent working in the shop. Sloan testified that he
also spent the month of October working in the shop and the record does not support a contrary
finding. Relying on Arlington Masonry Supply, 

, n3 (2003) (holding that one must,
for a sufficient amount of time, “regularly perform duties similar to those performed by unit
employees” in order to be considered a member of the bargaining unit), the Board found that, based
upon the small amount of time he spent performing bargaining unit work, Nathan Sloan was not a
member of the bargaining unit. While there was evidence that a small portion of Sloan’s time was
dedicated to bargaining unit work, this Court has held that it will not overturn factual findings of the
Board simply because the evidence could have been viewed differently. Talsol 

.
       Evan Timmerman began working for Vanguard in March 2003, and was assigned to the
“special hazards” systems, which is not included in the bargaining unit. While there was some
evidence that Timmerman spent a portion of his time installing sprinkler systems, the evidence on
the record indicated that the percentage of Timmerman’s work time spent performing such
bargaining unit work was not high. The Board had substantial evidence to conclude that

         2
           Vanguard initially contended that employee Austin Aamodt, who signed the petition, was a bargaining unit
employee, however it later conceded that he was not, changing its contention to state that seven of fourteen unit members
signed the petition.
Nos. 05-2497/2630            Vanguard Fire & Supply Co. v. NLRB                               Page 6


Timmerman did not spend enough time prior to or during October 2003 (the time the disaffection
petition was presented) regularly performing duties that would have entitled him to inclusion in the
bargaining unit. As Timmerman was not a bargaining unit employee in October 2003, his signature
on the petition is of no consequence.
       Sean Wiggers began working for Vanguard in late June 2002 as a sprinkler system installer,
but in December 2002 or January 2003, Wiggers was assigned to the “special hazards” systems
which is not a part of the bargaining unit. Wiggers has worked in the special hazards unit since the
time of his reassignment, thus, he was not a bargaining unit employee in October 2003 and his
signature on the petition is also inconsequential.
       The record provided the Board with substantial evidence to conclude that Sloan,
Timmerman, and Wiggers were not bargaining unit employees when they signed the petition. That
determination meant that there were only eleven bargaining unit members at the time the petition
was signed. Because Aamodt, Sloan, Timmerman and Wiggers were not in the bargaining unit, only
four of the eight signatures on the petition represented bargaining unit members. The Union
continued to be supported by seven of the eleven bargaining unit members, therefore, Vanguard’s
withdrawal of Union recognition violated Section 8(a)(5) of the Act. 

(an
employer may only withdraw union recognition when the union actually loses the support of the
majority of bargaining unit members).
         Interestingly, Vanguard does not seem to challenge the Board’s findings that Sloan,
Timmerman and Wiggers were not members of the bargaining unit. Vanguard instead makes a futile
attempt to characterize a portion of the Union’s alternatively pled complaint as an admission by the
Union that Sloan, Timmerman and Wiggers were members of the bargaining unit. The Union’s
complaint initially alleged that Vanguard violated the Act by withdrawing Union recognition while
the Union maintained the support of the majority of the bargaining unit members. In order to find
this allegation true, ALJ Locke would have needed to find that Sloan, Timmerman, and Wiggers
were not members of the bargaining unit. The Union amended the complaint to allege, in the
alternative, that if Sloan, Timmerman, and Wiggers were found to be members of the bargaining
unit, then Vanguard violated the Act by unilaterally increasing their wages without negotiating with
the Union. Vanguard attempts to argue that the Union’s alternatively pled complaint became an
admission or stipulation that the three men were in the bargaining unit once Vanguard admitted such
fact. Vanguard’s argument is without merit.
        ALJ Locke concluded that Sloan, Timmerman, and Wiggers were not in the bargaining unit,
therefore, he never reached the allegations in the Union’s alternatively pled complaint. Vanguard
would have this Court believe that once a party makes an argument in the alternative and the
opposing party accepts part of the alternative argument as true, that the facts and conclusions of the
alternative argument are conclusively established. What Vanguard failed to consider is that both
the Board and this Court have permitted alternative arguments without deeming the allegations in
such arguments to be true because they were pled and not objected to by the opposing party. See
S. Freedman Elec. Inc., 

, 432 (1981) (counsel alleged that employer’s withdrawal
from bargaining unit was unlawful, or in the alternative, that if the withdrawal was lawful, the
bargaining unit was employer’s single facility); see also W. Paper Prods., Inc., 313 NLRB 94,94
(1993), enf’d in relevant part sub nom, Peters v. NLRB, 

(6th Cir. 1988)(noting that as
a general rule, pleading in the alternative is permitted).
        Vanguard cannot be allowed to turn the Union’s alternative argument, especially considering
that the Board did not even reach its merits, into an admission or stipulation by the Union for
Vanguard’s own benefit. Vanguard likens the allegations in the Union’s alternatively pled
complaint to a stipulation which must be accepted by the Court, however, Vanguard fails to offer
any relevant authority. There was no stipulation offered or entered into by the parties. In the case
Nos. 05-2497/2630            Vanguard Fire & Supply Co. v. NLRB                                 Page 7


Vanguard uses to support its stipulation argument, Academy of Art College, 

, 454-55
(1979), the employer actually entered into a written stipulation and later tried to deny the facts in
the stipulation. In the instant case, there was no stipulation entered into by the Union. Moreover,
both ALJ Locke and the Board found substantial evidence to believe that Sloan, Timmerman, and
Wiggers were not bargaining unit employees when they signed the petition. Contrary to Vanguard’s
argument, the Board is not required to accept stipulations where they are contrary to the evidence.
See First Healthcare Corp., 

, 646 (2001) (rejecting stipulation limiting litigation to
a single issue), enf’d 

(6th Cir. 2003); Red Lion, 

, 33-34 (1991)(rejecting
stipulation not supported by the facts).
       Finally, Vanguard’s argument that the Court should review this issue de novo because the
Board failed to follow Board Rule 102.20 is without merit. Board Rule 102.20 states:
       All allegations in the complaint, if no answer is filed, or any allegation in the
       complaint not specifically denied or explained in the answer filed, unless the
       respondent shall state in the answer that he is without knowledge, shall be deemed
       to be admitted to be true and shall be so found by the Board, unless good cause to the
       contrary is shown.
This rule explicitly applies to situations where no answer is filed by the respondent. In this case,
Vanguard filed an answer to the complaint, and even if it had not, the facts presupposed by the
Union’s alternatively pled complaint would still not be established as true because the merits of the
alternatively pled complaint were never even reached once the Board decided the three employees
in question were not members of the bargaining unit.
        The Board’s findings that Sloan, Timmerman and Wiggers were not members of the
bargaining unit were supported by substantial evidence on the record. The allegations in the Union’s
alternative complaint were not admitted or stipulated to. Finally, the Board did not violate any of
its own rules in deciding that Vanguard’s withdrawal of Union recognition was not based on an
actual loss of majority support for the Union.
                             D. Requiring Union to Provide Agenda
        Section 8(a)(5) of the Act requires parties to meet and bargain in good faith as to mandatory
subjects of bargaining such as wages, hours, and other terms and conditions of employment.
Fibreboard Paper Prods. Corp. v. NLRB, 

, 210 (1964). Parties are not required to
bargain over non-mandatory subjects, however, one cannot insist upon a non-mandatory subject of
bargaining to impasse or as a precondition to bargaining on mandatory subjects. NLRB v. Wooster
Div. of Borg-Warner Corp., 

, 349 (1958); Taylor Warehouse Corp. v. NLRB, 

, 901(6th Cir. 1996). A party who insists upon a non-mandatory subject to impasse or as a
precondition to bargaining violates Sections 8(a)(1) and (5) of the Act. 

agenda is not
a mandatory subject of bargaining; therefore, Vanguard’s insistence upon an agenda’s being
submitted by the Union fourteen days prior to proposed meetings between the parties resulted in
Vanguard’s violation of the Act. See Caribe Staple Co., 

, 890 (1994) (concluding that
an employer’s “attempt to force capitulation by declining to agree to any future bargaining session
unless the Union acceded to this nonsubstantive, procedural demand” of providing an agenda before
meetings violated Sections 8(a)(5) and (1) of the Act).
        There is substantial evidence on the record to support the Board’s finding that Vanguard
insisted upon the Union’s submitting a detailed agenda as a precondition to bargaining on
mandatory subjects, in violation of Sections 8(a)(1) and (5). In a July 16, 2003, letter to the Union’s
attorney, James E. Tucker, Vanguard’s attorney, Timothy J. Ryan, stated that Vanguard was willing
to “make one more attempt to meet.” Vanguard expressly conditioned the meeting between the
Nos. 05-2497/2630            Vanguard Fire & Supply Co. v. NLRB                               Page 8


parties upon its receipt of a “detailed agenda” “at least two weeks in advance” of the meeting. The
specific points Vanguard wished the Union to address in its agenda included details of the proposals
that needed to be “worked out,” specific proposals the Union intended to make, and any other issues
the Union would like to discuss.
        In its August 4, 2003, letter replying to Vanguard’s request for a detailed agenda, the Union
included an agenda which specifically addressed “areas which need to be “worked out,” the Union’s
“specific proposals,” and “discussion issues.” The agenda submitted by the Union clearly satisfied
Vanguard’s request for a detailed agenda, yet in an August 12, 2003, letter from Ryan to Tucker,
Vanguard rejected the Union’s agenda and cancelled the August 19, 2003, meeting of the parties
claiming the Union’s agenda did not satisfy Vanguard’s request.
        Again on August 28, 2003, the Union attempted to provide Vanguard with an acceptable
agenda. The letter from Tucker to Ryan included a detailed three-page agenda which again outlined
the very topics Vanguard requested be included in the agenda. Vanguard evidenced its refusal to
accept the second agenda by failing to respond to the letter containing the agenda and by never again
meeting with the Union.
        Although Vanguard argues its insistence upon receiving an agenda from the Union fourteen
days before proposed meetings was simply an example of the type of “hard bargaining” that was met
with approval in National Medical Associates, Inc., 

, 1031 (1995), that case is
distinguishable from the instant case. Vanguard’s refusal to accept two seemingly compliant
agendas indicates its bad faith and its attempt to illegally require a nonmandatory agenda as a
precondition to bargaining.
         In National Medical Associates, Inc., the Board found that a letter sent by the employer to
the union stating that there would be no further negotiations until the employer received “some
meaningful indication of a willingness to compromise” on disputed issues did not constitute an
illegal precondition to bargaining. 

The Board’s finding was heavily influenced by the
fact that the letter from the employer expressly stated that it was not refusing to meet with union.

The instant case is distinguishable from National Medical Associates, Inc., as Vanguard
expressly stated that it was refusing to bargain with the Union unless it received a detailed agenda
fourteen days before proposed meetings. (“[I]f we have not received a detailed agenda . . . on or
before August 5, 2003, we will cancel the August 19, 2003, meeting and we will not schedule
another meeting until we have received these items.”) Even after receiving multiple agendas,
Vanguard refused to meet with the Union. Vanguard was not using the agenda to merely put
pressure on the Union, it was using the agenda to create an illegal precondition to bargaining.
       The facts described above demonstrate the substantial evidence that exists on the record to
support the Board’s finding that Vanguard simply used the agenda, a nonmandatory subject of
bargaining which cannot be insisted upon as a precondition to bargaining, as a conduit for its refusal
to bargain on mandatory subjects, thereby violating Sections 8(a)(1) and (5) of the Act.
        Vanguard’s argument that its insistence upon the nonmandatory agenda to the preclusion of
bargaining on mandatory subjects was permitted because the Union failed to object to the request
is misplaced. A waiver of one’s collective bargaining rights, including the right to be free from
illegal preconditions to bargaining such as the agenda at issue here, must be shown by “clear and
unmistakable” evidence. Taylor 

(6th Cir. 1996). Vanguard proposes
that the Union’s act of submitting an agenda resulted in a waiver of the Union’s collective
bargaining rights, thereby precluding Vanguard from violating the Act with respect to the agenda.
This argument is not supported by the facts or the law.
Nos. 05-2497/2630            Vanguard Fire & Supply Co. v. NLRB                               Page 9


         The Union did object to Vanguard’s demand that it submit an agenda before meetings
between the parties were to proceed. In a letter to Vanguard’s attorney, the Union clearly stated that
the agenda requirement was contrary to the past bargaining practices of the parties. Had Vanguard
revealed that it would reject acceptable agendas, the Union may have been more adamant in its
objection to the agenda requirement. The Union’s submission of an agenda can be described as
nothing more than an attempt to encourage bargaining between the parties - far from the waiver of
its collective bargaining rights Vanguard proposes.
        There is substantial evidence on the record to support the Board’s finding that Vanguard
insisted upon a nonmandatory agenda as a precondition to bargaining on mandatory subjects,
thereby violating the Union’s collective bargaining rights. There is no clear and unmistakable
evidence to support Vanguard’s argument that the Union waived its collective bargaining rights
thereby precluding Vanguard from violating the Act with respect to its agenda requirement.
               E. Enforcement of Dormant Cell Phone Reimbursement Policy
        An employer violates its bargaining obligations under Section 8(a)(1) and (5) of the Act if
it changes a term or condition of employment without bargaining with the employees’ bargaining
representative. Litton Fin. Printing Div. v. NLRB, 

, 198 (1991) (citing NLRB v. Katz,

, 743 (1962)); NLRB v. Plainville Ready Mix Concrete Co., 

, 1325-26 (6th
Cir. 1995). Employer-sponsored cellular telephone plans are a condition of employment and must
be bargained over. Goya Foods of Florida, No. 12-CA-19668, 

(NLRB Feb. 22,
2001). Vanguard argues that because its policy of charging employees for cell phone overage
existed prior to the Union’s recognition, it did not unilaterally, and in violation of the Act, change
a condition of employment. This Court previously held that “Sections 8(a)(1) and (5) of the Act
can be violated when, on the heels of a successful union election, an employer begins to strictly
enforce previously existing rules which had not earlier been enforced.” Hyatt Corp. v. NLRB, 

, 372-73 (6th Cir. 1991). There was substantial evidence on the record for the Board to
conclude that Vanguard began to strictly enforce its once lax policy of charging employees for
overage only after the employees gained Union representation.
        The Union election occurred in July 2001. Vanguard states that on at least three occasions
prior to the Union election, it distributed memorandums to employees informing them of the policy
to charge employees for cell phone overage. The Board found that despite the policy and the
frequent occurrence of overage, on only one occasion prior to the Union election was an employee
charged for cell phone overage. The Board concluded that the lack of documentation that Vanguard
charged employees for overage prior to the Union election indicates that such charges did not occur.
Additionally, several Vanguard employees testified that they accrued overage but were never
charged until after Union election. Vanguard began to enforce its overage policy in December of
2002, after the Union election.
       Despite Vanguard’s argument that a spreadsheet it submitted to ALJ Locke evidences its
overage charges to sixteen employees prior to Union election, the ALJ expressly discredited the
spreadsheet by stating: “I have little confidence in the accuracy of this list and do not credit it.”
        The ALJ’s credibility determination was based on the facts that the list was generated by
Vanguard specifically for the hearing before the ALJ and that the circumstances surrounding the
creation of the list were also troubling. The list was compiled from Post-It notes given to Vanguard’s
accountant, Tim Callahan, by office manager Vandi Young who drafted the Post-It notes from a
verbal communication with Sharon Bishop, the administrative assistant responsible for administering
the cell phone policy. ALJ Locke’s determination that the spreadsheet was not credible evidence,
subsequently adopted by the NLRB, was, and is, entitled to great weight. See Taylor Warehouse
, 98 F.3d at 901(holding that “credibility determinations made by ... administrative law judge[s] and
Nos. 05-2497/2630            Vanguard Fire & Supply Co. v. NLRB                             Page 10


adopted by the [National Labor Relations Board] (NLRB) are entitled to great weight”). Absent the
discredited spreadsheet, there is no evidence that Vanguard enforced its overage policy until after
the Union election. By beginning to strictly enforce its lax policy of charging employees for overage
only after Union election, Vanguard unilaterally changed a condition of employment without
negotiating with the Union.
                                      III. CONCLUSION
       For the foregoing reasons, we hereby AFFIRM and ENFORCE the Order of the Board.