Opinion for the Court filed by Circuit Judge ROGERS.
Joseph T. Ryerson & Sons, Inc. petitions for review of an order of the National Labor Relations Board that the company violated §§ 8(a)(1) and (5) of the National Labor Relations Act by refusing to bargain with the certified representative of the bargaining unit, namely with Local 714 of the International Brotherhood of Teamsters (“Teamsters”) and the United Steelworkers of America (“Steelworkers”), which jointly petitioned to represent a bargaining unit at four of the company’s plants in Chicago, Illinois. The company contends that the Board erred in failing to set aside the election for three reasons: (1) the Act does not authorize either joint election petitions or separate administration by two unions of a collective bargaining agreement; (2) there is not substantial evidence in the record to support the Board’s finding that the unions did not misrepresent the intended nature of their joint representation to the bargaining unit employees during the election campaign; and (3) the hearing officer abused his discretion in denying the company’s subpoena for the unions’ entire joint bargaining agreement and other internal documents relating to the joint petitions for representation, thereby denying the company a full and fair hearing. Because the company failed to preserve its statutory argument for review by the court, and because we conclude that the company’s other contentions are unpersuasive, we deny the petition and grant the Board’s cross-application for enforcement of its order.
I.
Joseph T. Ryerson & Sons, Inc. operates four plants in Chicago, Illinois — the 16th Street, 83rd Street, 103rd Street, and 111th Street — known collectively as the “Chicago Complex.” After a number of unsuccessful attempts by the Steelworkers — due, in part, to lack of support at the 16th and 83rd Street plants — to organize Ryerson production and maintenance employees in Chicago, the Teamsters, in 1997, began a campaign to represent production and maintenance employees at the 16th and 83rd Street plants. After the Teamsters filed a petition with the Board seeking certification as the exclusive bargaining representative of the bargaining unit at the 16th and 83rd Street plants, a struggle between the Teamsters and Steelworkers ensued, resulting in the Steelworkers’ campaign to represent the employees at the 103rd and 111th Street plants. After the petitions for representation of the 800 employees were consolidated for hearing, the Steelworkers distributed a flyer at the 103rd Street and 111th Street plants stating that:
The workers at 103rd Street don’t want to be represented by the Teamsters and have overwhelmingly] signed Steelworker cards ... The Teamsters are arguing for one election including 83rd and 16th Street workers.... The Steelworkers are fighting to get an election for the 103rd Street workers.
Employees at the 16th and 83rd Street plants, without objection from the Team *1149 sters, circulated a petition opposing the Steelworkers: “We, the undersigned, DO NOT want the Steelworkers to represent 1 us. Rather than have them, we will remain NON-UNION.” (emphasis in original)
After failed attempts at mediation and on the eve of arbitration, the unions agreed to file a joint petition for certification. Following execution of a joint petition agreement, the unions distributed flyers to the employees that set out the first two paragraphs of the joint petition agreement:
At the National Relations Board héar-ing, the [Steelworkers] and the [Teamsters] agree to engage in a joint organizing/representa[ ]tion campaign at the Chicago Complex of [the company] for a bargaining unit consisting of all four facilities, including 16th Street, 83rd Street, 103rd and 111th streets! This will involve an amended representation petition to seek a joint certification, unless otherwise agreed to by the [Teamsters] and [Steelworkers],
Assuming that the campaign is successful, the union[s] will jointly negotiate for a collective bargaining agreement and will divide responsibility for administering the contract as follows:
-16th and 83rd streets — [Teamsters] -103rd and 111th Streets — [Steelworkers]
Dues and membership will follow the same lines.
No other portion of the joint petition agreement was divulged to the employees. The unions circulated separate authorization cards, and filéd amended petitions to jointly petition to represent “[a]ll full-time and regular part-time production and maintenance employees” at the four Chicago Complex plants.
During the election campaign, the Steelworkers distributed literature and campaigned 1 exclusively at 103rd and 111th Streets, while the Teamsters distributed literature and campaigned exclusively at 16th and 83rd Streets. Each union held its own rallies. Organizers from both unions made statements to employees that the unions would pari ways with respect to representation after the certification, dividing the four plants between them for the election campaign and thereafter for contract administration. 1
On September 25, 1997, the unions won the election'. 2 The company filed objections to the election, noting among other things that the unions “stated [their] intention to negotiate as separate unions in separate bargaining units, and not as a joint bargaining representative” and “misrepresented how bargaining and contract administration would occur if [they] won the election.” The company also served a subpoena on the unions for “[a]ll documents relating to the joint representation arrangement” between the Teamsters and the Steelworkers. The unions objected to the subpoena as seeking irrelevant documents and as vague and unduly burdensome. The hearing officer denied the subpoena except as to the first two paragraphs of the joint petition agreement that had been disclosed to the employees during the election campaign, on the ground that the unions’ internal communications were irrelevant because they did not shed light on what the unions had communicated to the employees during the election campaign. Following a hearing over the course of several days, the hearing officer found “no direct evidence that the [unions] do not intend to bargain jointly,” observing that the unions had “consistently maintained that they would *1150 bargain jointly, but administer the jointly-negotiated contract separately at specific locations,” and that there was no evidence “that the [unions] misrepresented how bargaining and contract administration would occur if [they] won the election.” The Board adopted the hearing officer’s findings and recommendations in the unions’ favor, and certified the unions as the exclusive bargaining representative of the bargaining unit employees.
When the company subsequently refused to bargain, the unions filed an unfair labor practice charge. The Board, in response to the company’s attack on the certification because of the unions’ conduct during the election campaign, ruled that the company could not relitigate issues litigated in the representation proceeding, and granted the General Counsel’s motion for summary judgment on the complaint charging the company with violating §§ 8(a)(1) and (5) of the Act.
See Joseph T. Ryerson & Son, Inc.,
II.
In contending that the Board erred by failing to set aside the election, the company makes three challenges. We address each in turn.
A. Statutory challenge. The company contends that the National Labor Relations Act does not authorize the Board to certify more than one union as exclusive bargaining representative, or to divide a bargaining unit for purposes of contract administration. 3 Specifically, the company makes two statutory contentions. First, it maintains that the Board acted contrary to the Act, which authorizes a union to become the exclusive bargaining-unit representative only if it obtains the support of a majority of the bargaining unit employees, by certifying two unions, each of which garnered only minority support, as the “exclusive representative” for the company’s single Chicago Complex bargaining unit. Second, the company maintains that, even if the Act did permit joint petitioning and representation, it does not permit the unions to divide up a bargaining unit for purposes of bargaining, contract administration, and representation. As explained in its brief, in the company’s view, the Board’s authorization for the unions to divide up the Chicago Complex bargaining unit and administer the contract separately rests on “a false dichotomy between contract bargaining and contract administration” inasmuch as contract administration, and in particular the processing of grievances, is “inextricably linked with collective bargaining.” While the second statutory contention poses a serious legal issue that the court has not yet addressed, see supra note 3, a threshold issue is whether these contentions are properly before the court. The Board maintains that the company “waived” its statutory contentions by failing to raise them in the representation proceeding before the Board and *1151 waiting until its opposition to the General Counsel’s motion for summary judgment on the unfair labor practice complaint to raise the issues for the first time.
“It is well established that in the absence of newly discovered evidence or other special circumstances requiring reexamination of the decision in the representation proceeding, a respondent is not entitled to relitigate in a subsequent refusal-to-bargain proceeding representation issues that were or could have been litigated in the prior representation proceeding.”
Thomas-Davis Med. Ctrs., P.C. v. NLRB,
Apparently aware of the weakness of its position, the company falls back on its assertion that its statutory challenge was “implicit” in its argument that the unions’ conduct demonstrated that they intended to divide the bargaining unit for separate representation. But the thrust of the company’s rebanee on the unions’ conduct was to show that the joint representation agreement was a sham and the bargaining unit employees were confused about what they were voting for in the election, which is unrelated to the statutory challenge it raised in opposing summary judgment. Furthermore, as the Board stated in granting summary judgment on the unfair labor practice charge, the company did not “offer to adduce at a hearing any newly discovered and previously unavailable evidence, nor [did] it allege any special circumstances that would require the Board to reexamine the decision made in the representation proceeding.”
Ryerson,
The company’s explanation that it was unable to btigate its statutory objections “with all of the information it needed” as a result of the denial of its subpoena for the entire joint representation agreement rings hollow. Even if access to the entire agreement might possibly have strengthened a statutory challenge,
cf. Construction & Gen. Laborers’ Local Union No. 190 v. NLRB,
The company’s current contention that the Board failed in its responsibility to ensure that “fundamental labor principles” are not violated,
see Associated Milk Producers, Inc. v. NLRB,
Because the company did not preserve its right to raise its statutory contentions in appealing the Board’s unfair labor practice order, those contentions are not properly before the court and we do not address them.
B. Misrepresentation challenge. Seeking to overturn the election on other grounds, the company contends that the Board’s finding that the unions did not misrepresent to the bargaining unit employees during the election campaign the character of their proposed joint representation is unsupported by substantial evidence in the record. Because the unions engaged in misrepresentation, the company maintains, the Board erred in failing to set aside the result of the tainted election. The company relies on evidence in the record that certain individuals told bargaining unit employees that the Steelworkers and Teamsters intended to bargain separately and that this message was reinforced by the separate campaigns waged by the unions. Specifically, the company relies upon statements attributed to union officials such as “don’t worry about the Teamsters, we’re gonna be Steelworkers here,” and the “Teamsters [are] going to be at 16th and 83rd and we are not worried about what the Steelworkers are going to do.”
Obviously, the members of the bargaining unit must have accurate information to inform their election decisions.
See, e.g., General Teamsters Local Union No. 174 v. NLRB,
First, the Board’s rejection of the company’s contention is well founded. The court must affirm the Board’s decision if it reasonably rests on factual findings supported by substantial evidence.
See Family Serv. Agency San Francisco v. NLRB,
Second, the evidence the company cites is insufficient to rebut even the prima facie showing.
See, e.g., Gene Fiedler Chevrolet Co.,
Thus, absent evidence that could rebut the substantial evidence on which the Board relied in finding that the unions did not misrepresent their intent to bargain jointly, the company fails to show that the Board erred in refusing to set aside the election for the alleged misrepresentation.
C. Subpoena challenge. Finally, the company contends that it was denied a full and fair hearing because the hearing officer denied the company’s subpoena for the unions’ entire joint representation agreement and other internal union communications about jointly representing the bargaining unit. The company maintains that the entire agreement was “highly relevant” and “central” to its argument that the unions did not intend to bargain jointly and the joint representation agreement was a sham. Reviewing the hearing officer’s partial denial of the company’s subpoena for abuse of discretion, we find none in view of the nature of the arguments that the company presented during the representation proceeding.
See Perdue Farms, Inc., Cookin’ Good v. NLRB,
The hearing officer partially denied the subpoena on the ground that he found relevant only “whatever communications have been made to employees regarding the status of the joint petitioners,” observing that the company “will have the right to file an unfair labor practice charge” if the unions do not bargain jointly. Given the nature of the company’s challenge to the union election in the representation proceeding, that the unions made misrepresentations to the bargaining unit employees during the campaign, and given the historical antagonism that the company identified between the two unions, the company’s position that it was deprived of information relevant to its reasonable sus
*1154
picion is plausible,
see Suburban Newspaper,
Nevertheless, under the abuse of discretion standard, we conclude that it was still reasonable for the hearing officer to find that the full joint petition agreement and like internal communications had little relevance to the misrepresentation issue.
See NLRB v. Blackstone Mfg. Co.,
Accordingly, because the company failed to preserve its statutory challenge to the certification of the unions as the exclusive representative for the bargaining unit, and because the company’s other contentions are unpersuasive, we deny the petition for review and grant the Board’s cross application for enforcement of its order.
Notes
. According to the Bureau of National Affairs, under the joint representation agreement, the Teamsters will represent 525 employees at two plants and the Steelworkers will represent 275 employees at the other two Chicago Complex plants. See BNA Daily Labor Report, Nov. 6, 1997, at A3.
. Of the 820 employees eligible to vote in the election, 786 voted: 418'voted for the unions and 352 voted against the unions, with 16 ballots challenged and one declared void.
. While acknowledging that the court rejected a challenge to joint petitioning in
NLRB v. National Truck Rental Co.,
. The cases on which the company relies are readily distinguishable. In
Suburban Newspaper Publications, Inc., 230
N.L.R.B. 1215, 1217,
