You prove it with a comparison and a paper trail. The Equal Pay Act asks whether a man and a woman doing substantially equal work, judged by skill, effort, and responsibility, are paid differently. Title VII reaches sex-based gaps in pay and in promotions more broadly. The evidence that carries these claims is pay and job records, a real comparator, performance reviews, and a promotion history the employer cannot explain away.
In this guide
What the law requires
Two federal laws do most of the work here, and they overlap. The Equal Pay Act requires that men and women in the same workplace be given equal pay for equal work. The jobs do not have to be identical, only substantially equal, and it is job content rather than job title that decides. The EEOC frames the test as substantially equal skill, effort, and responsibility, performed under similar working conditions within the same establishment. All forms of pay count, not just base salary, so bonuses, stock options, profit sharing, overtime, and benefits are part of the comparison.
The Equal Pay Act also builds in the employer's defense. Pay differences are lawful when they rest on seniority, merit, quantity or quality of production, or a factor other than sex. The EEOC calls these the four affirmative defenses and is explicit that it is the employer's burden to prove one of them applies. That is why proving a pay claim is really two jobs: show the gap between substantially equal work, then be ready to knock down the reason the employer offers for it.
Title VII is the wider net. It makes it illegal to discriminate based on sex in pay and benefits, and it forbids sex discrimination in any aspect of employment, the EEOC lists hiring, firing, pay, job assignments, promotions, layoff, and training. Unlike the Equal Pay Act, Title VII does not require the comparator's job to be substantially equal or in the same establishment, which is what makes it the tool for a denied promotion rather than only an unequal paycheck. Title VII covers employers with fifteen or more employees, while the Equal Pay Act reaches virtually all employers.
What evidence actually proves it
Start with the pay records, and get all of it, not just the number on your offer letter. The EEOC says the law against compensation discrimination covers every form of pay, salary, overtime, bonuses, stock options, profit sharing, life insurance, vacation and holiday pay, allowances, and benefits. A gap that looks small in base salary can be large once a bonus formula or an equity grant is added in, so the full compensation picture is the number that matters.
Then find the comparator. This is the person of the other sex whose job is substantially equal to yours, same skill, effort, and responsibility, similar working conditions. Because the test is job content and not title, the proof is what the work actually involved: job descriptions, the tasks you both performed, org charts, and the names and pay of people doing that work. For a Title VII promotion claim the comparator does not have to sit in the same establishment or hold a substantially equal job, so a wider set of colleagues can be relevant.
Performance reviews are the evidence that meets the employer's defense head on. Merit is one of the four affirmative defenses, so the company will often say the higher-paid man simply performed better. Your own reviews, ratings, and any praise in writing test that story, and so does the record of how the same standard was applied to him. Save the reviews, the emails, and the metrics before you lose access to them.
Promotion history is its own thread. Who applied, who was chosen, when, and the reason the company gave at the time. A pattern where men move up on the same record that keeps a woman in place, or shifting explanations for why she was passed over, is the kind of proof these cases turn on. Keep the postings, the application, the rejection, and any note about the decision, dated as it happened rather than reconstructed later.
Sources [1]
One recent verdict's facts
A recent public case shows these categories of evidence carrying a gender pay and promotion claim all the way to a jury. This is one matter's facts, offered as an example, not a prediction. Prior results do not guarantee a similar outcome.
In July 2026, a federal jury in the United States District Court for the District of Oregon, in Portland, found that a major apparel company discriminated against a former employee on the basis of gender in pay and promotion. According to reporting by Law360 and Oregon Public Broadcasting, the verdict form recorded punitive damages of 7.5 million dollars under federal law and 7.5 million dollars under Oregon law, plus economic damages, which Law360 summarized as more than 15 million dollars.
The framing matters, because it is easy to overstate. This is a jury verdict, not a settlement and not money collected. It remains subject to post-trial proceedings, and the employer has said it is evaluating its next steps. A verdict is what a jury decided after trial; what a plaintiff ultimately receives can change as a case moves through post-trial motions and any appeal.
As for the firm's role, Law360 lists Ackermann & Tilajef among plaintiff's counsel, which is a matter of public record, and firm attorneys Brian Denlinger and Erika Smolyar served on the trial team. The value of the case as an example is simpler than the headline number: a single worker's claim that she was paid and promoted less than comparable men was proven to a jury on the ordinary building blocks of these cases, the pay comparison and the promotion record.
What deadlines apply
The clock depends on which law you are using, and the two run separately. Under the Equal Pay Act you do not have to file a charge with the EEOC first, you may go directly to court. The window for an Equal Pay Act charge or lawsuit is two years from the discriminatory paycheck, stretched to three years if the violation was willful, and the EEOC is clear that filing a charge does not extend the deadline for going to court.
Title VII runs differently. There you must file a charge with the EEOC before you can sue, and the general window is 180 days from the discrimination, extended to 300 days where a state or local agency enforces a law prohibiting the same kind of discrimination. Because Title VII also covers sex discrimination in pay, a worker with an Equal Pay Act claim often has a Title VII claim as well, and filing the Title VII charge does not buy more time on the Equal Pay Act lawsuit. The two deadlines have to be tracked at once.
One group is on a separate track. Federal employees and applicants do not use the charge process, they generally have to contact an agency EEO Counselor within 45 days of the act. If you work for a federal agency, treat 45 days as your number, not 180 or 300.
Filing windows for a state fair-employment claim differ by state and can be shorter than the federal ones, so if you are in California, Texas, Washington, or Nevada, check the state deadline too. The safe move is to get the dates in front of a lawyer while every window is still open rather than after you have picked one yourself.
Questions, answered.
Do I have to file with the EEOC before I can sue for equal pay?
Not for an Equal Pay Act claim. The EEOC says you can go directly to court without filing a charge first, and the deadline is two years from the discriminatory paycheck, or three years if the violation was willful. Title VII is different: to bring a Title VII sex-discrimination claim you must file an EEOC charge first, generally within 180 days, extended to 300 days in states with their own fair-employment agency. Many workers have both claims at once, and filing a Title VII charge does not extend the Equal Pay Act deadline, so both clocks need watching.
Who counts as a valid comparator?
Under the Equal Pay Act, a person of the other sex in the same establishment whose job requires substantially equal skill, effort, and responsibility under similar working conditions. Job content controls, not the title, so two differently named roles can still be equal, and two identically named ones may not be. Title VII is broader for pay and promotion claims: it does not require the comparator's job to be substantially equal or in the same establishment, so a wider set of colleagues can be relevant to showing you were treated worse because of sex.
The company says the pay gap is about my performance. Does that end it?
No. Merit is one of the four affirmative defenses under the Equal Pay Act, and the EEOC states it is the employer's burden to prove it, not yours to disprove. Your performance reviews, ratings, written praise, and the record of how the same standard was applied to the higher-paid comparator are how that explanation gets tested. Gather that record early, because a story built after the fact is easier to check against contemporaneous documents.
Source [1]
What did the 2026 Oregon gender pay verdict actually decide?
In July 2026 a federal jury in Oregon found that a major apparel company discriminated against a former employee on the basis of gender in pay and promotion. As reported by Law360 and Oregon Public Broadcasting, the verdict form recorded punitive damages of 7.5 million dollars under federal law and 7.5 million dollars under Oregon law, plus economic damages, which Law360 summarized as 15 million dollars. It is a jury verdict, not a settlement or money collected, and it remains subject to post-trial proceedings, with the employer saying it is evaluating next steps. Ackermann & Tilajef is listed among plaintiff's counsel, and firm attorneys Brian Denlinger and Erika Smolyar served on the trial team. Prior results do not guarantee a similar outcome.