Patricia Kenworthy brought this action against Conoco, Inc., asserting, inter alia, violations of 29 U.S.C. § 206(d)(1) (Equal Pay Act) and 42 U.S.C. §§ 2000e et. seq. (1988) (Title VII), arising from her failure to be promoted and her eventual discharge. 1 Ms. Kenworthy’s Equal Pay Act claim was tried to a jury, which found in her favor and awarded her backpay. In her Title VII claims, which were tried to the court, Ms. Kenworthy alleged that Co-noco discriminated against her on the basis of her sex and Hispanic national origin, and retaliated against her for filing discrimination charges. The court found that Conoco did not discriminate against Ms. Kenwor-thy with respect to either the denial of her promotion or her discharge. Although the court also ruled against Ms. Kenworthy on her retaliatory discharge claim, it found in her favor on her claim that Conoco’s failure to promote her was in retaliation for her filing the discrimination claim.
Conoco appeals, arguing that the verdict on the Equal Pay Act claim was not supported by the evidence and, alternatively, that the district court erred with respect to the award of prejudgment interest on that claim. Conoco also contends that the district court was clearly erroneous in finding that Conoco’s refusal to promote Ms. Ken-worthy was retaliatory. Ms. Kenworthy asserts that Conoco’s notice of appeal was not timely.
I.
Because the timely filing of a notice of appeal is a jurisdictional requirement,
see Browder v. Dep’t of Corrections,
*1465 On December 4, 1989, the parties filed a joint motion for entry of final judgment. In support of this motion, the parties asserted that judgment had never been entered on the July 11 order awarding Ms. Kenworthy damages on her Title VII claim, and that the court had not ruled on the parties’ stipulation as to prejudgment interest on the Equal Pay Act claim. Two days later on December 6, the court entered an order awarding Ms. Kenworthy prejudgment interest on her Equal Pay Act claim in accordance with the stipulation of the parties. This action by the court resolved the last remaining issue in the case aside from the amount of costs and attorneys’ fees. 2
Finally, on January 25, 1990, in accordance with an order for entry of final judgment issued by the court on January 19, a final judgment was entered on the docket. The court’s order recited that it incorporated “by reference the Partial Judgment [on the Equal Pay Act claim] and addresses the remaining Title VII issues which the court had taken under advisement.” Rec., vol. I, doc. 19. The order awarded Ms. Kenwor-thy damages plus interest on her two successful claims. Conoco filed a notice of appeal within thirty days of this order.
Ms. Kenworthy now asserts that the December 6, 1989 order directing the award of prejudgment interest on the Equal Pay Act claim resolved the only outstanding issue in the case and that, contrary to the understanding of the parties when they filed their joint motion for entry of final judgment, judgment on the Title VII claim had in fact already been entered on the docket at the time the December 6 order was docketed. Accordingly, Ms. Kenwor-thy argues that the December 6 order was the final judgment and that, the time for appeal began to run from entry of that order. Under this analysis, the February 23 notice of appeal would be untimely.
Under 28 U.S.C. § 1291 (1988), this court has jurisdiction only of appeals from final decisions of the district court. Rule 58 of the Federal Rules of Civil Procedure sets out the requirements for the entry of a judgment that is final for purposes of section 1291.
3
A final judgment entered in compliance with Rule 58 begins the time period for the filing of a notice of appeal.
See Beaudry Motor Co. v. Abko Properties, Inc.,
We have held that a district court order which contains no discussion' of the reasoning behind the court’s decision and cannot be considered to be an opinion or memorandum, is clearly intended to be the final directive of the court disposing of all the claims, and is properly entered on the docket, meets the requirements of Rule 58.
Kline v. Dep’t of Health & Human Servs.,
' The December 6 order, simply styled “order”, was entered while the parties’ motion for entry of final judgment was pending and did not address all the deficiencies raised in that motion.' In contrast, the January 25 entry, styled “CLERK’S ENTRY OF FINAL JUDGMENT”, specifically *1466 addressed all the issues the parties then considered unresolved. Under these circumstances, we do not believe the December 6 order can be viewed as “clearly intended to be the final directive of the court disposing of all the claims.” Id. at 524. Even if we were to conclude that the December 6 order met the requirements of Rule 58, we would be presented with circumstances analogous to those at issue in Kline. We held there that a timely appeal from the later order, “which clearly [met] the requirements of Rule 58,” id., was sufficient to confer appellate jurisdiction. We conclude accordingly that we have jurisdiction over this appeal.
II.
The facts giving rise to this litigation may be briefly set out as follows. Patricia Kenworthy was hired by Conoco in April 1975 as an accounting clerk in the payroll office. She began at a salary grade three and was raised to a level four after she had worked a few months. In October 1978, Ms. Kenworthy was transferred to the warehouse and began working as a warehouse accounting clerk. She continued in salary level, four.
In 1981, Ms. Kenworthy filed a charge with the EEOC alleging that she was being paid at level four for performing accounting work substantially equal to the work performed by men paid at level six. She and Conoco reached a settlement agreement on this charge whereby Conoco raised her to a level five and she agreed to release any Equal Pay Act claims against Conoco for violations occurring up to the settlement date of July 27, 1981.
In September 1983, the warehouse supervisor, Bill Harrison, left that position and Ms.' Kenworthy applied for the job. At that point, she had worked for five years as warehouse accounting clerk and had occasionally filled in as acting warehouse supervisor. The position was originally offered to Ray Sanders, who had been a payroll accounting clerk and was currently a yield accountant. He declined the offer. The position was filled by Jim Peterson, a pipefitter/welder. Although Peterson had a college degree, supervisory experience, and a technical background, he had no experience in either purchasing or accounting, functions which Conoco personnel conceded were important to the warehouse supervisor's position. Ms. Kenworthy then filed a second EEOC charge asserting that her failure to be promoted to warehouse supervisor was in retaliation for the 1981 charge, and that she had been denied equal pay.
In April 1985, Ms. Kenworthy was transferred back to the payroll accounting clerk position, under the supervision of Julia Gil-ler. In December of that year, Ms. Ken-worthy obtained possession of a thank-you note written by one employee to another. The note had been placed in the trash when the employee’s file had been cleaned out. Although the facts surrounding this incident are in some dispute, evidence in the record indicates that Giller considered this note to be confidential information, that the note could have been embarrassing to the writer, and that Ms. Kenworthy showed the note to at least two other Conoco employees. When Giller confronted Ms. Ken-worthy with what Giller considered a breach of Ms. Kenworthy’s duty as a payroll clerk to keep confidential information confidential, Ms. Kenworthy at first denied any breach. Later, when Ms. Kenworthy realized that Giller was referring to the thank-you note, she admitted showing the note to others but stated that she did not think the note was confidential and that she had shown it in an attempt to improve relations between the note-writer and other employees. Giller terminated Ms. Kenwor-thy as a result of this incident.
Ms. Kenworthy instituted this lawsuit, contending that Conoco violated the Equal Pay Act by failing to pay her wages equal to those it paid men performing substantially equal work. Ms. Kenworthy also charged that her failure to be given the warehouse supervisor’s job and her discharge were the result of sex and national origin discrimination and/or in retaliation for her EEOC filings. The Equal Pay Act claim was tried to a jury and the Title VII claims were tried to the court in one pro *1467 ceeding. The jury returned a verdict for Ms. Kenworthy on her equal pay claim. The court found that Conoco had denied Ms. Kenworthy the promotion in retaliation for her EEOC charge, but held that her discharge was not retaliatory or the product of sex or national origin discrimination.
HI.
A.
Conoco contends that the record does not support the jury’s determination that Conoco violated the Equal Pay Act. A plaintiff asserting a violation of that act “must prove that the employer pays unequal wages for work that is substantially equal in terms of skill, effort and responsibility, and that is performed under similar working conditions.”
EEOC v. Central Kansas Medical Ctr.,
Conoco asserts that Ray Sanders was the only man who arguably performed accounting functions substantially equal to those performed by Ms. Kenworthy, and that he ceased performing this work prior to the 1981 cutoff date established by the settlement agreement between Conoco and Ms. Kenworthy. Conoco contends that the jury was instructed not to consider evidence occurring before this date, and argues that its verdict for Ms. Kenworthy is therefore without support in the record. In so doing, Conoco mischaracterizes the applicable law, the court’s jury instruction, and the evidence.
The law is clear that an Equal Pay Act violation may be established even though employees whose pay is the subject of comparison perform substantially equal work at different times.
See, e.g., County of Washington v. Gunther,
The Equal Pay Act is violated when an employer discriminates. “between employees on the basis of sex by paying wages to employees ... at a rate less than the rate at which he pays wages to employees of the opposite sex ... for equal work.” 29 U.S.C. § 206(d)(1). A violation of the Act thus occurs at the time the discriminatorily low wage is paid to the disfavored, employee. The release Ms. Kenworthy signed states in pertinent part that “Patricia J. Kenworthy does hereby release and relinquish any and all claims, actions, and causes of action which she has or might have, in connection with the terms and conditions of her employment with Conoco up to the date of this Release.” PI. ex. 4. The plain language of the release bars only equal pay claims that had accrued prior to .the date the release was executed. Accordingly, even though Ms. Kenworthy could not recover for discriminatory wages she received before 1981, the jury could properly consider whether Conoco violated the Act after 1981 on the basis of Ms.'Kenworthy’s wages and work after that date compared to Sanders’ wages and work before 1981. Allowing Ms. Kenwor- *1468 thy to recover for any pay differential she suffered after the settlement does not defeat her release of claims based on work she performed before that date. The trial court properly instructed the jury not to consider evidence of violations occurring prior to July 27, 1981. See rec., vol. IX, at 19. The court could not and did not prohibit the jury from comparing Sanders’ pre-1981 work with work Ms. Kenw'orthy performed after that date to determine whether her post-1981 wages constituted a violation of the Act.
We therefore turn to whether the evidence is sufficient to support the Equal Pay Act verdict. Our review is limited to ascertaining whether that verdict is supported by substantial evidence when the récord is viewed in the light most favorable to the prevailing party.
See Riggs v. Scrivner, Inc.,
Under this standard, it is not the function of the appeals court to reverse merely if it believes the evidence might have supported a different verdict. If there is an evidentiary basis upon which the verdict can be supported, the jury’s determinations will be left undisturbed, even where there is substantial .contradictory evidence that could have supported an opposite verdict. ■
Gilbraltar,
When Sanders’ work as a payroll clerk is considered, the record amply supports the jury’s determination that Conoco violated the Equal Pay Act by the wages it paid to Ms. Kenworthy. Sanders testified that his work as a payroll clerk was substantially equal to Ms. Kenworthy’s work as a warehouse clerk. See rec., vol. IV, at 50. Sanders was paid at a level six, while Ms. Kenworthy was paid at a level five. We therefore uphold the jury’s verdict on Ms. Kenworthy’s equal pay claim.
B.
Conoco also asserts that the district court erred in awarding prejudgment interest on the amount of the Equal Pay Act verdict. Conoco argues that the court’s instruction and the special verdict form allowed but did not require the jury to include prejudgment interest in its award. Therefore, Conoco contends, because the jury's award could have included prejudgment interest as well as damages, the court erred by treating the award as damages only and awarding prejudgment interest on the entire amount. Our review of the proceedings below reveals not only that Conoco failed to present this issue to the district court, but that Conoco stipulated to the amount of prejudgment interest which it now contends was erroneously awarded. See rec., vol. I, doc. 17.
Conoco did not object to either the jury instruction or the special verdict form, nor did it seek a clarification of the verdict before the jury was dismissed. A party who fails to bring to the trial court’s attention ambiguities created by jury instructions or special verdict forms may not seek to take advantage of such ambiguities on appeal. See
Comcoa, Inc. v. NEC Tele., Inc.,
IV.
Finally, we address Conoco’s argument that the district court erred in finding that Conoco failed to promote Ms. Kenworthy in retaliation for her 1981 EEOC charges. Conoco does not contend that the evidence is insufficient to support this finding, asserting instead that the court’s ruling on this issue is inconsistent with its treatment of Ms. Kenworthy’s sex and national origin claims. We conclude that any seeming inconsistency arises from the court’s harmless legal error in stating that Ms. Kenwor-thy failed to make a prima facie case on the sex and national origin claims. Although Ms. Kenworthy has not appealed the resolution of this claim against her, we nonetheless analyze it because it is the basis for Conoco’s challenge to the court’s ruling on the retaliation claim.
In assessing whether Ms. Kenworthy was denied the warehouse supervisor’s position on the bases of her sex or national origin, the district court applied the three-part framework applicable to Title VII discrimination claims set out in
McDonnell Douglas Corp. v. Green,
Under the McDonnell Douglas test, the plaintiff bears the burden of establishing a prima facie case of discrimination. The Supreme Court has stated that this burden ‘is not onerous.’ Establishment of a prima facie case creates a presumption of unlawful discrimination that requires a defendant to come forward with evidence of a nondiscriminatory reason for its action. The plaintiff then must have a full and fair opportunity to demonstrate that the defendant’s proffered reason was pretextual, which merges with the plaintiff’s ultimate burden of proving intentional discrimination.
MacDonald v. Eastern Wyoming Mental Health Center,
To establish a prima facie case of failure to be promoted on the basis of sex or national origin discrimination, a plaintiff must show: (1) that she was a member of a protected class; (2) that she was qualified for the position; (3) that she was rejected; and (4) that the position was filled by someone who was not a member of the protected class.
See Luna v. City & County of Denver,
We considered this issue in analogous circumstances in
MacDonald,
“raise[d] serious problems under the McDonnell Douglas analysis, which mandates a full and fair opportunity for a plaintiff to demonstrate pretext. Short-circuiting the analysis at the prima facie stage frustrates a plaintiffs ability to establish that the defendant’s proffered reasons were pretextual and/or that age was the determining factor; if a plaintiffs failure to overcome the reasons offered by the defendant for discharge defeats the plaintiffs prima facie case, the court is then not required to consider plaintiffs evidence on these critical issues.”
a plaintiff may make out a prima facie case of discrimination in a discharge case by credible evidence that she continued to possess the. objective qualifications she held when she was hired, or by her own testimony that her work was satisfactory, even when disputed by her employer, or by evidence that she had held her position for a significant period of time.
Id. at 1121 (citation omitted).
Applying that analysis to the alleged discriminatory failure to promote at issue here, Ms. Kenworthy could make a prima facie showing through credible evidence that she was qualified for the position she sought, even if that evidence was disputed by her employer. Ms. Kenworthy clearly met that burden through her own testimony and that of Sanders and Harrison, both of whom stated that she was qualified for the warehouse supervisor position. See rec., vol. IV, at 14-15, 54. Although the court thus erred in stating that Ms. Ken-worthy had failed to make a prima facie case, it appears that the court in reality performed the entire three-part McDonnell Douglas analysis and determined that Co-noco’s reasons for choosing Peterson were not a pretext for discrimination on the bases of sex or national origin. 4 Indeed the court consistently assessed whether Cono-co’s reasons were legitimate or pretextual, describing them as “not untenable” and “not implausible.” Rec., vol. I, doc. 9 at 18. A determination that Conoco’s reasons were not a pretext for sex or national origin discrimination is not, however, inconsistent with a ruling that Conoco nonetheless retaliated against Ms. Kenworthy because of her EEOC filing, particularly when the retaliation claim is analyzed under the proper legal standards.
Conoco fails to recognize that because the court below found Conoco’s proffered reasons legitimate
and
nevertheless credited Ms. Kenworthy’s evidence of retaliation, the retaliation claim is subject to the “mixed motives” analysis applicable to situations involving both valid and invalid reasons for the challenged employment action.
See generally Price Waterhouse v. Hopkins,
once a plaintiff in a Title YII case shows that [an illegitimate reason] played a motivating part in an employment decision, the defendant may avoid a finding of liability only by proving that it would have made the same decision even if it had not allowed [the improper motive] to play such a role.
Id.,
In this case, Ms. Kenworthy presented ample evidence that her failure to be promoted was motivated by her 1981 EEOC filing.
5
The district court found this evidence to be credible. The court also reiterated its holding that Conoco’s proffered reasons for not promoting Ms. Kenworthy were legitimate. The retaliation claim thus presents the “mixed motive” scenario described and governed by
Price Waterhouse. See Ostrowski v. Atlantic Mut. Ins. Cos.,
V.
In sum, we conclude that the appeal in this case is timely. We hold that the jury *1472 verdict in favor of Ms. Kenworthy on her Equal Pay Act claim is supported by the record, and we affirm the judgment entered on that claim. We further hold that Conoco has waived its objection to the district court’s award of prejudgment interest on that verdict, and we affirm the interest award as well. Finally, we reject Conoco’s assertion that the Title VII rulings are inconsistent and that a remand is required.
AFFIRMED.
Notes
. Kenworthy also asserted various pendant state law claims. All of these claims except one for wrongful discharge were dismissed prior to trial. A jury decided this claim against Kenwor-thy and she does not pursue it on appeal.
. A judgment may be final notwithstanding unresolved issues on costs and attorneys’ fees.
See
Fed.R.Civ.P. 58 (costs);
Budinich v. Becton Dickinson & Co.,
. Rule 58 provides:
Subject to the provisions of Rule 54(b): (1) upon a general verdict of a jury, or upon a decision by the court that a party shall recover only a sum certain or costs or that all relief shall be denied, the clerk, unless the court otherwise orders, shall forthwith prepare, sign, and enter the judgment without awaiting any-direction by the court; (2) upon a decision by the court granting other relief,- or upon a special verdict or a general verdict accompanied by answers to interrogatories, the court shall promptly approve the form pf the judgment, and the clerk shall thereupon enter it. Every judgment shall be set forth on a separate document. A judgment is effective only when so set forth and when entered as provided in Rule 79(a). Entry of the judgment shall not be delayed for the taxing of costs. Attorneys shall not submit forms of judgment except upon direction of the court, and these directions shall not be given as a matter of course.
. Ms. Kenworthy has not alleged on appeal that she was not given a full and fair opportunity to demonstrate that Conoco’s reasons were a pretext for sex or national origin discrimination.
. A plaintiff will be entitled to the burden-shifting analysis set out in
Price Waterhouse
upon presenting “evidence of conduct or statements by persons involved in the decisionmaking process that may be viewed as directly reflecting the alleged [retaliatory] attitude.”
Ostrowski v. Atlantic Mut. Ins. Cos.,
. In so doing, the court made the ultimate finding required by Price Waterhouse, stating that "the defendant retaliated against the plaintiff for filing the 1981 charge and that this wrongful retaliation was a ‘but for’ cause for her failure to be more favorably considered for the promotion, and of her failure to be selected warehouse supervisor.” Rec., vol. I, doc. 9 at 26.
