MANION, Circuit Judge.
The principal issue presented in this appeal is what constitutes sufficient consideration to support an agreement in Wisconsin to arbitrate between an employer and an at-will employee. The appellant, Ilah M. Tinder, sued her former employer, Pinkerton Security, for employment discrimination and retaliation under Title VII of the Civil Rights Act of 1964, 42 U.S.C. §§ 2000e et seq. Citing what it claimed was an enforceable agreement to arbitrate the dispute, Pinkerton moved the district court under the Federal Arbitration Act ("FAA") to stay the trial proceedings and compel Tinder to arbitrate her dispute. The district court granted the motion, concluding that the agreement was enforceable. Later, after Pinkerton prevailed at arbitration, the district court confirmed the arbitrator's award in favor of Pinkerton, and Tinder appeals. Because the district court correctly concluded that the agreement was enforceable under Wisconsin law and compelled arbitration, we affirm.
Tinder began employment with Pinkerton on October 21, 1996, and was assigned to work as a security officer at a General Motors facility in Janesville, Wisconsin. The following day, Tinder received a copy of Pinkerton's employee handbook and signed an "Employee Acknowledgment Form." The first paragraph made clear that the form was a contract for employment at-will:
In October 1997, Pinkerton issued to all of its employees as a payroll stuffer a color brochure entitled "Pinkerton's Arbitration Program." The brochure announced that Pinkerton was instituting a mandatory arbitration program effective January 1, 1998, broadly covering all legal claims including discrimination under the federal civil rights statutes:
This language was clarified elsewhere in the brochure using a question-and-answer format. The brochure emphasized that the arbitration agreement would not bar employees from bringing legal claims, and that both the employees and the company were bound by the policy:
The brochure stated that arbitrators would apply the same legal rules and would be authorized to award the same remedies as any court. Although the program provided that the company and the employee would split the arbitrator's fee, Pinkerton agreed to reimburse prevailing employees for their portion of the fee, or pay the entire fee if the law of the forum prohibited splitting the fee. The brochure also suggested that opting out of the program was not possible if the employee wished to remain on the job past the effective date of the policy:
Tinder did not recall receiving or seeing the arbitration brochure. Pinkerton produced two affidavits stating that Tinder received the brochure, however. The first affidavit, from Director of Employee Relations Kathy Rasmussen, asserted that Pinkerton's central office distributed copies of the brochure to each of its district offices with instructions to insert it as a payroll stuffer in the envelope along with each employee's paycheck. According to Rasmussen, Pinkerton sent a memorandum to its district office managers along with the brochures emphasizing the importance of the program and the need to promptly distribute the brochures. Rasmussen went on to aver that Pinkerton's legal department later issued a second memorandum confirming that the brochure had been distributed to all district offices. In the second affidavit, Mark Cruciani, manager of Pinkerton's district office in Milwaukee, asserted that Tinder was paid through his office; that his office distributed the brochure to all of its employees along with their paychecks on the payday following the date Pinkerton instructed its district offices to circulate the brochure; and that Tinder received her salary by check, not by direct deposit into a bank account.
In May 1998, Pinkerton undertook an internal campaign to remind its employees that the arbitration policy had been implemented. First, Pinkerton featured the program on the cover of the May 1998 issue of its internal monthly magazine, Excellence in Service. The cover story was a one-page article summarizing the reasons why Pinkerton instituted the policy, and reminding employees that the policy was in effect and applied to all employees who continued to work for or joined Pinkerton after January 1, 1998. Pinkerton also distributed a poster for display in all work sites that declared "Arbitration: It's fair, it's convenient, and it's policy." Finally, Pinkerton distributed a payroll stuffer to all of its employees entitled "Settling Disputes Through Arbitration." The stuffer reiterated the terms of the original brochure announcing the program.
In fall 1998, Tinder verbally complained to her supervisor, Bradley Bastain, that she believed she was the victim of gender discrimination on the job. Tinder complained that, unlike her male co-workers, she was required to work overtime, was not promptly paid for her work, and was not reimbursed for her purchase of boots for her uniform. Instead of taking action to remedy Tinder's complaints, Bastain admonished Tinder that he was tired of hearing her "continual complaints to upper management." In November 1998, Bastain informed Tinder that he was removing her from her assigned post, and warned her that her work hours would be reduced if she continued to complain about her work environment. Tinder alleged that after this, Bastain reduced her pay and refused to accommodate her request to take Sundays off so she could attend religious services. She interpreted these actions as retaliation for complaining about discrimination. Shortly after these events, Tinder quit.
Arbitration concluded in April 2001 with a ruling in Pinkerton's favor. Pinkerton then moved the district court to confirm the arbitrator's award. Over Tinder's objections, the district court confirmed the award and entered judgment in Pinkerton's favor.
Tinder argues that any agreement she made to submit her claims to arbitration was not supported by valid consideration. She also contends that the district court erred in compelling her to arbitrate because she had no notice of the policy's implementation; she neither signed any acknowledgment agreeing to be bound nor was she allowed to opt out; the policy was not implemented until after she began employment with the company; and the contract is illusory. We review de novo the district court's decision to compel arbitration based on its finding that an enforceable arbitration agreement existed between the parties. Gibson v. Neighborhood Health Clinics, 121 F.3d 1126, 1130 (7th Cir.1997).
The FAA mandates enforcement of valid, written arbitration agreements. 9 U.S.C. § 2; Circuit City Stores v. Adams, 532 U.S. 105, 111-12, 121 S.Ct. 1302, 149 L.Ed.2d 234 (2001). To give effect to the federal policy favoring private arbitration, the FAA provides for stays of litigation when an issue presented in the case is referable to arbitration. 9 U.S.C. § 3; EEOC v. Waffle House, Inc., 534 U.S. 279, 122 S.Ct. 754, 761-62, 151 L.Ed.2d 755 (2002). Employment discrimination claims arising under Title VII are issues referable to arbitration. See Koveleskie v. SBC Capital Markets, Inc., 167 F.3d 361, 364 (7th Cir.1999); Perez v. Globe Airport Security Serv's, Inc., 253 F.3d 1280, 1284 (11th Cir.2001); Hooters of America, Inc. v. Phillips, 173 F.3d 933, 937 (4th Cir. 1999); Patterson v. Tenet Healthcare, Inc., 113 F.3d 832, 837 (8th Cir.1997). We evaluate agreements to arbitrate under the same standards as any other contract. Metro East Center for Conditioning & Health v. Qwest Communications Internat'l, Inc., 294 F.3d 924, 927 (7th Cir.2002); Penn v. Ryan's Family Steak Houses, Inc., 269 F.3d 753, 758 (7th Cir.2001). Whether a binding arbitration agreement exists is determined under principles of state contract law. 9 U.S.C. § 2; First Options of Chicago, Inc. v. Kaplan, 514 U.S. 938, 944, 115 S.Ct. 1920, 131 L.Ed.2d 985 (1995). Because all relevant events occurred in Wisconsin, Wisconsin law determines the validity of the agreement. Michalski v. Circuit City Stores, Inc., 177 F.3d 634, 636 (7th Cir.1999).
Tinder points out, however, that Pinkerton unilaterally implemented its arbitration program without input from her or its employees. This, she argues, shows that she never promised to arbitrate her dispute. But Pinkerton's unilateral decision to implement the program does not demonstrate that Tinder did not agree to be bound. The agreement provided expressly that by remaining employed at Pinkerton after the effective date of the arbitration program Tinder, like all other employees, agreed to submit her claims to arbitration. Wisconsin recognizes that, because at-will employees are free to quit their jobs at any time, at-will employees give adequate consideration for employer promises that modify or supplant the at-will employment relationship by remaining on the job. See Ferraro, 368 N.W.2d at 673 n. 5; Pincus v. Pabst Brewing Co., 893 F.2d 1544, 1549 (7th Cir.1990) (citing Prochniak v. Wisconsin Screw, Co., 265 Wis. 541, 61 N.W.2d 882, 885 (1953)). Tinder remained on the job past the effective date of the program. Doing such evidenced her mutual promise to arbitrate her disputes with Pinkerton.
Tinder also contends that our decisions in Gibson and Michalski establish that a promise of continued employment cannot constitute sufficient consideration to support a promise to arbitrate. We disagree. Although Gibson was decided under Indiana law and is not helpful in determining the content of Wisconsin law, we recognized that an employer's promise to continue employing an at-will employee could constitute consideration for an employee's promise to forego certain rights. See 121 F.3d at 1131-32. Additionally, Gibson is distinguishable from this case because the employer never promised to continue employing the plaintiff in exchange for her waiving her right to sue. Id. at 1132. And Michalski, which arose under Wisconsin law, did not address whether continued at-will employment may constitute consideration for an agreement to arbitrate. The question in Michalski was whether the employer had promised to arbitrate in exchange for the employee's agreement to do the same. The written agreement was silent whether the employer was bound to arbitrate. Based on our review of other documents in the record, we concluded, over a dissent, that the employer was bound by the agreement. Unlike Michalski, the controlling document in this case states expressly that Pinkerton is bound by the agreement.
In further arguing that there existed no consideration to support her agreement to forego her right to sue, Tinder relies on NBZ, Inc. v. Pilarski, supra, 185 Wis.2d 827, 520 N.W.2d 93 (1994),
Tinder next maintains that she did not receive the brochure announcing Pinkerton's arbitration program and did not know that the program existed until she sued. In her view, because Pinkerton failed to make adequate efforts to ensure that she knew about the program, she never promised to do anything and should have been allowed to proceed to trial on her discrimination claims. Pinkerton argues that Tinder's claim that she does not recall receiving or seeing the arbitration brochure does not place any facts concerning the agreement at issue. Pinkerton also contends that it submitted sufficient evidence demonstrating that Tinder did in fact receive the brochure. Since Tinder failed to controvert its evidence, Pinkerton asserts that the district court properly discounted Tinder's claims and ordered arbitration.
A district court must promptly compel arbitration once it is satisfied that the parties agreed to arbitrate. 9 U.S.C. § 4. But if the district court determines that the making of the arbitration agreement is seriously disputed, "the court shall proceed summarily to the trial thereof." Id. The issue then is not whether Tinder's denial of having received notice of the policy is sufficient to avoid arbitration, but whether she produced sufficient evidence to raise a factual issue concerning whether she and Pinkerton are bound by a contract to arbitrate.
The party opposing arbitration must identify a triable issue of fact concerning the existence of the agreement in order to obtain a trial on the merits of the contract. Saturday Evening Post Co. v. Rumbleseat Press, Inc., 816 F.2d 1191, 1196 (7th Cir.1987). The FAA does not expressly identify the evidentiary standard a party seeking to avoid compelled arbitration must meet. But courts that have addressed the question have analogized the standard to that required of a party opposing summary judgment under Rule 56(e) of the Federal Rules of Civil Procedure: the opposing party must demonstrate that a genuine issue of material fact warranting a trial exists. See Doctor's Associates, Inc. v. Distajo, 107 F.3d 126, 129-30 (2d Cir.1997); Great Western Mortgage Corp. v. Peacock, 110 F.3d 222, 231 n. 36 (3d Cir.1997); Dillard v. Merrill Lynch, Pierce, Fenner & Smith, Inc., 961 F.2d 1148, 1154 (5th Cir.1992). Just as in summary judgment proceedings, a party cannot avoid compelled arbitration by generally denying the facts upon which the right to arbitration rests; the party must identify specific evidence in the record demonstrating a material factual dispute for trial. Oppenheimer & Co., Inc. v. Neidhardt, 56 F.3d 352, 358 (2d Cir.1995).
In deciding whether the party opposing summary judgment (and by analogy compelled arbitration) has identified a genuine issue of material fact for trial, "the evidence of the non-movant is to be believed and all justifiable inferences are to be drawn in his favor." Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 255, 106 S.Ct. 2505, 91 L.Ed.2d 202 (1986). But Tinder's only evidence that she never received notice
Finally, we reject Tinder's remaining arguments. She contends that the arbitration policy is unenforceable because the program did not exist at the time she was hired, but agreements implemented in the course of an at-will employment are enforceable if independently supported by consideration. Michalski, 177 F.3d at 635; Ferraro, 368 N.W.2d at 673. Tinder also contends that the policy is unenforceable because she did not sign anything acknowledging the policy, and was not allowed to opt out of the policy while continuing to work. Although § 3 of the FAA requires arbitration agreements to be written, it does not require them to be signed. Valero Refining, Inc. v. M/T Lauberhorn, 813 F.2d 60, 64 (5th Cir.1987). Furthermore, an employee's written acceptance of an employer's policies is not a prerequisite to enforceability under Wisconsin law, Ferraro, 368 N.W.2d at 669 n. 2, and we have enforced arbitration agreements lacking opt-out provisions, see Michalski, 177 F.3d at 636; cf. Metro East Center for Conditioning & Health, 294 F.3d at 927-28 (arbitration clause contained in tariff on file with Federal Communications Commission was enforceable against plaintiff, even though terms of tariff were non-negotiable and plaintiff had no power to alter the tariff). Tinder also asserts that Pinkerton's promises were illusory because Pinkerton reserved the right to modify or terminate its policies at any time. But a valid arbitration agreement exists, and both parties are bound by it. See Ferraro, 368 N.W.2d at 666.
Because Tinder continued her at-will employment past the effective date of the arbitration policy, and because Pinkerton agreed to bind itself to the arbitration policy, we conclude that adequate consideration supported Tinder's agreement to arbitrate, and the agreement was enforceable under Wisconsin law. The district court therefore correctly compelled Tinder to submit her Title VII claims to arbitration. The judgment of the district court is