that a claimant in a suit alleging job discrimination must first establish a prima facie case of discrimination, after which the burden shifts to the defendant-employer “to articulate some legitimate, non-discriminatory reason,” id. at 803, 93 S.Ct. at 1824, for its action. Should the defendant articulate such a valid business reason, the plaintiff must then prove that the employer’s articulated reason is actually “a pretext for the sort of discrimination prohibited” and that the employer’s “stated reason [for its action] was in fact a pretext.” Id. at 804, 93 S.Ct. at 1825 (emphasis added). “In short, [the plaintiff] must be given a full and fair opportunity to demonstrate by competent evidence that the presumptively valid reasons for his rejection were in fact a coverup for a racially discriminatory decision.” Id. at 805, 93 S.Ct. at 1825 (emphasis added).
More recently, the Supreme Court in Texas Dept. of Community Affairs v. Burdine, 450 U.S. 248, 252-53, 258, 101 S.Ct. 1089, 1093, 1094-1096, 67 L.Ed.2d 207 (1981) summarized the McDonnell Douglas formula:
“First, the plaintiff has the burden of proving by the preponderance of the evidence a prima facie case of discrimination. Second, if the plaintiff succeeds in proving the prima facie case, the burden shifts to the defendant ‘to articulate some legitimate, nondiscriminatory reason for the employee’s rejection.’ Third, should the defendant carry this burden, the plaintiff must then have an opportunity to prove by a preponderance of the evidence that the legitimate reasons offered by the defendant were not its true reasons, but were a pretext for discrimination.
[W]e are unpersuaded that the plaintiff will find it particularly difficult to prove that a proffered explanation lacking a factual basis is a pretext. We remain confident that the McDonnell Douglas framework permits the plaintiff meriting relief to demonstrate intentional discrimination.” (Emphasis added).
This court has approved the use of the McDonnell Douglas burden-of-proof formula in age discrimination suits. See Kephart v. Institute of Gas Technology, 630 F.2d 1217 (7th Cir. 1980).
Guided by these legal principles, we hold that the district court’s jury instructions correctly stated the law as use of the word “pretext” is an integral part of the McDonnell Douglas burden-of-proof formula. Furthermore, the district court’s jury instructions defined “pretext” as a “coverup for age discrimination;” the Supreme Court in McDonnell Douglas also referred to “pretext” as a “cover-up.” 411 U.S. at 805, 93 S.Ct. at 1825.
The plaintiff argues that, even though the reported decisions consistently refer to “pretext”, use of the word in the district court’s jury instruction was error because the average juror equates “pretext” with “false”. Thus, the plaintiff contends, the jury believed that in order to recover the plaintiff Golomb had to prove that Prudential’s articulated reason for the demotion, i.e., poor job performance, was false.
The plaintiff is correct in arguing that a claimant in an age discrimination suit need not prove that the employer’s articulated reason was false. Instead, the plaintiff must prove that age was a determining factor in the employer’s decision; the employer’s articulated reason may in fact have been true, but if age was also a determining factor in the employer’s decision, the plaintiff has carried his burden of proof.
“Plaintiff’s burden of proof in an age discrimination case is to show that age was a factor in the decision to terminate him. Age need not have been the sole motivating factor but it must have been the ‘determinative factor’ in his discharge in the sense that ‘but for’ his employer’s motive to discriminate against him be