Opinion for the Court filed by Circuit Judge GARLAND.
Three related companies that operate New Jersey nursing homes petition for review of a decision of the National Labor Relations Board (NLRB). The Board found that the petitioners violated the National Labor Relations Act by refusing to meet with their employees’ union for the purpose of collective bargaining, and by refusing to timely and completely supply information requested by the union. In this court, the petitioners do not dispute that they refused to meet and provide information; instead, they press the affirmative defenses of impasse and bad faith on the part of the union. Because substantial evidence supports the Board’s findings that there was no genuine impasse and that the union’s information requests were not made in bad faith, we deny the petition for review and grant the Board’s cross-application for enforcement. 1
I
Petitioners Monmouth Care Center, Milford Manor Nursing Home and Rehabilitation Center, and Pinebrook Nursing Home are separate companies that share ownership and management. The companies op *1087 erate nursing homes and long-term care facilities in New Jersey. SEIU 1199, New Jersey Health Care Union, represents the petitioners’ employees, with the exception of registered nurses, supervisors, and other limited categories of personnel. All three employers had separate labor contracts with the union that were due to expire on March 31, 2005, and the parties began to negotiate successor collective bargaining agreements in early 2005. The employers were represented in negotiations by their counsel, David Jasinski. The union cycled through three chief negotiators during the course of bargaining: Uma Pimplaskar, Justin Foley, and Larry Alcoff.
The issues on the bargaining table included wages, pensions, and health insurance. Another central point of contention was the employers’ use of “agency employees” — employees provided by temporary placement agencies to work in positions that would otherwise have been occupied by members of the bargaining unit. The parties’ expiring agreements permitted the employers to staff up to forty percent of their positions with agency employees, provided that those employees were placed in the bargaining unit after working at one of the facilities for a year. In the successor contracts, the union hoped to eliminate or reduce the employers’ use of agency employees, while the employers aimed to retain or increase their flexibility to hire and use such employees.
Each employer negotiated separately with the union: Milford bargained three times, Monmouth five times, and Pine-brook seven times. The parties also met for one off-the-record meeting at the union’s office in July 2005. Despite making some initial progress in negotiations at each of the three facilities, the employers effectively ceased bargaining with the union by the fall of 2005. Milford presented its so-called “final offer” at its third and final bargaining session with the union on August 19, 2005. Pinebrook made its “final offer” during its fifth bargaining session on September 12, 2005, and then declared impasse during a subsequent session on November 3, 2005. Monmouth never submitted a final offer; instead, bargaining simply concluded after a fifth and final session on August 12, 2005.
Throughout the negotiations, the union repeatedly requested information from the employers, both orally and in writing, regarding a variety of subjects, including their use of agency employees. The union first requested that information in a letter dated January 20, 2005, which asked petitioners to provide, among other things, “[djocuments showing the names of agencies used ... to supply temporary employees working in bargaining unit positions, the amount paid to agencies for temporary employees, ... and the hourly compensation paid to the agency employees.” Letter from Larry Alcoff to David Jasinski (Jan. 20, 2005) (J.A. 858). During later negotiations, the union reiterated its request for that information and advised the employers that the information was needed for bargaining purposes.
See Monmouth Care Ctr.,
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In February and May 2006, the union filed unfair labor practice charges alleging that all three employers had (1) refused to meet and bargain with the union, and (2) refused to timely and completely supply relevant information requested by the union.
See
29 U.S.C. § 158(a)(5) (making it an unfair labor practice for an employer “to refuse to bargain collectively with the representatives of his employees”);
NLRB v. Acme Indus. Co.,
After a hearing, an administrative law judge (ALJ) ruled in favor of the union on both charges. On April 27, 2009, a two-member panel of the Board affirmed the ALJ’s decision.
Monmouth Care Ctr.,
II
The employers did not object before the Board to the ALJ’s findings that they refused to meet and bargain with the union, and that they refused to provide relevant information to the union in a complete and timely fashion.
In subpart A, we address the employers’ contention that a genuine bargaining impasse relieved them of their duty to meet and bargain. In subpart B, we address their claim that they had no obligation to respond to the union’s information requests because the union made those requests in bad faith.
A
A genuine bargaining impasse temporarily suspends an employer’s duty to meet and bargain with a union.
See Serramonte Oldsmobile, Inc. v. NLRB,
We have recently reiterated the limited role this court plays in reviewing an NLRB decision, particularly a decision regarding the existence of impasse:
‘We must uphold the judgment of the Board unless, upon reviewing the record as a whole, we conclude that the Board’s findings are not supported by substantial evidence, or that the Board acted arbitrarily or otherwise erred in applying established law to the facts of the case.” Mohave Elec. Coop., Inc. v. NLRB,206 F.3d 1183 , 1188 (D.C.Cir. 2000) (internal quotation marks and citation omitted). Of particular relevance here — because the existence of impasse is a question of fact — is the statutory admonition that “[t]he findings of the Board with respect to questions of fact if supported by substantial evidence on the record considered as a whole shall be conclusive.” 29 U.S.C. § 160(e). Moreover, as we have previously noted, “ ‘in the whole complex of industrial relations[,] few issues are less suited to appellate judicial appraisal than evaluation of bargaining processes or better suited to the expert experience of a board which deals constantly with such problems.’” TruServ [Corp. v. NLRB], 254 F.3d [1105,] 1115 [ (D.C.Cir.2001) ] (quoting Am. Fed’n,395 F.2d at 627 ). Accordingly, this “court ordinarily defers to the Board’s fact-finding as to the existence of a bargaining impasse,” id. at 1115, “unless the finding is irrational or unsupported by substantial evidence,” Teamsters Local Union No. 175 v. NLRB,788 F.2d 27 , 30 (D.C.Cir.1986).
Wayneview,
1. Because the employers refused to bargain jointly despite the union’s repeated requests,
see, e.g.,
At Monmouth, the parties conducted only five negotiating sessions, with the final session lasting no longer than an hour. At the time Monmouth ceased negotiating, it had not yet submitted its own economic proposal despite having promised to do so, and very little bargaining had taken place regarding the union’s latest economic proposal, which the union had submitted during the penultimate negotiation session on July 8, 2005.
At Milford, the parties bargained only three times before the employer submitted its so-called “final offer.” That proposal was in fact Milford’s
first
offer, and no substantive negotiations had taken place regarding that offer before Milford’s representative characterized it as “final.”
At the third facility, Pinebrook, the parties bargained five times before the employer submitted its “final offer” on September 12, 2005; an additional time on November 3, 2005 during which the employer formally declared impasse; and one final time over a year later, on January 24, 2007. Despite these seven sessions, bargaining had only begun in earnest when Pinebrook declared impasse.
See
2. The employers argue that, appearances aside, the union bargained in bad faith with all three of them by rigidly adhering to certain fixed demands. This, they maintain, supports the proposition that the parties were at impasse. Pet’r Br. 40 (citing
Taft Broad.,
The employers’ assertion that the union refused to vary from the terms of a prior agreement known as the “Tuchman Agreement” is likewise unpersuasive. The Tuchman Agreement was a contract containing a “most-favored-nations” clause that the union had recently negotiated with other nursing home employers. The petitioners contend that the union “insisted]” in its negotiations with each of the three facilities “that it could not and would not deviate” from the Tuchman Agreement’s terms, and that this rigid bargaining position led to an overall impasse. Pet’r Br. 40. But the Board affirmed the ALJ’s findings that the union never invoked the most-favored-nations clause as a barrier to reaching a different bargain with the petitioners, and that it never stated it was bound by the Tuchman Agreement’s specific terms.
See
Moreover, the evidence shows that the union’s proposals deviated from the terms of the Tuchman Agreement in some significant respects. The ALJ noted “several differences between the union’s proposal and the Tuchman Agreement^] including provisions regarding parity increases, shift differential, and time-and-half for [licensed practical nurses] working two floors.”
3. Our recent decision in
Laurel Bay Health & Rehabilitation Center v. NLRB,
As both the Board and this court have repeatedly emphasized, determining whether impasse or bad faith bargaining occurred involves multiple, highly fact-dependent considerations.
4
Indeed, the peti
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tioners stressed precisely that point in fending off the NLRB’s own post-argument letter, which called our attention to another recent decision of this court,
Wayneview Care Ctr. v. NLRB,
4. Finally, the NLRB’s finding that Monmouth, Milford, and Pinebrook all failed to provide the union with relevant information concerning the critical bargaining issue of agency employees provides still further support for its determination that there was no genuine impasse at any of the three facilities.
See
In this case, the union repeatedly requested information from each employer regarding a number of relevant topics, including the employer’s use of agency employees. None of the facilities provided timely and complete responses to those inquiries.
See
5. In sum, because substantial evidence supports the Board’s rejection of the employers’ affirmative defense of impasse, there is no ground for overturning the Board’s conclusion that the employers violated their statutory duty to meet and bargain with the union.
B
In addition to supporting the Board’s conclusion that no genuine impasse existed at any of the three facilities,
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the employers’ failure to respond to the union’s information requests also formed the basis for the Board’s finding of a separate violation of the National Labor Relations Act. An employer charged with failing to provide requested information may argue as an affirmative defense that the request was made in bad faith,
see, e.g., NLRB v. Hawkins Constr. Co.,
The petitioners’ principal contention is that the union acted in bad faith by “making irrelevant information requests prior to and after the declaration of impasse in a deliberate attempt to try to stave off impasse.” Pet’r Br. 40. The Board, however, affirmed the ALJ’s finding that the requested information was in fact relevant to bargaining.
See
The petitioners also assert that the union “failed to raise any objections to Petitioners’ response to its initial information requests and did not make any new information requests until after Petitioners had declared that the parties were at impasse.” Pet’r Br. 44. Although this argument does not appear to have been waived, it is flatly contradicted by the record evidence. That evidence shows that the union requested information concerning the use of agency employees, among other things, as early as January 20, 2005, before bargaining even began. Letter from Alcoff to Jasinski (Jan. 20, 2005) (J.A. 856-58). The union reiterated its information requests throughout 2005, sending numerous follow-up letters and frequently opening its negotiation sessions by objecting to the employers’ failure to provide the information in a complete and timely fashion.
See, e.g.,
*1095 III
For the foregoing reasons, we deny the petition for review and grant the Board’s cross-application for enforcement.
So ordered.
Notes
. This case was considered on the record from the National Labor Relations Board and on the briefs submitted by the parties. See Fed. R.App. P. 34(a)(2); D.C.Cir. R. 340.
. For example, the union’s prior proposal, submitted in May 2005, had asked for pension fund contributions of 2.5 percent of earnings for each bargaining unit employee. The July 8 proposal scaled back that request by asking for contributions of 2 percent effective July 15, 2005, and up to 2.5 percent on March 1,
*1090
2008.
Compare
Initial Proposals for Monmouth Care 2005 Contract Negotiations at 9 (May 11, 2005) (J.A. 868)
with
Monmouth Care Economic Outline (July 8, 2005) (J.A. 872). The union also modified its proposal regarding agency employees by eliminating the requirement in its May proposal that agency employees be made permanent and included in the bargaining unit after working on a regular basis for ninety days.
See
. The ALJ said: "[WJhile I do find it unlikely that Pimplaskar would make such statements, it is not impossible, particularly in view of the evidence in the record of her inexperience as a negotiator. Therefore, for the purposes of this decision, I shall assume without deciding that Pimplaskar made the comments attributed to her by” the employers’ negotiators.
.
See United Steelworkers of Am. Local 14534 v. NLRB,
. For example, in a letter dated September 12, 2005, the union reiterated its information requests, stated that it could "only make modest changes ... until we receive the remaining information,” and averred that "[u]pon receipt of the information, the Union is prepared to modify its proposal.” Letter from Alcoff to Jasinski (Sept. 12, 2005) (J.A. 1093).
