Equal Pay Laws Beyond the Federal Standard

Three widening moves, and the first is the big one

The federal Equal Pay Act compares jobs that are equal in skill, effort and responsibility under similar working conditions at the same establishment. That standard has been stable for six decades, and the movement has all been at state level, in three distinguishable directions. Anybody reading only the federal position is reading a standard that has not changed since 1963 and missing everything that has.

The first and most consequential concerns the comparison itself. Many states have replaced equal work with substantially similar work, a looser test that allows comparison between roles that are alike without being equivalent. A smaller group has gone further to comparable work, which permits comparing genuinely different jobs judged to be of comparable value to the employer.

That progression sounds technical and it decides cases. Under the federal test, a claim fails if the employer can identify a substantial difference in duties. Under a comparable-work standard, jobs in different departments doing entirely different tasks can be set against each other, which turns the question from “are these the same job” into “are these of similar worth”, and those are very different arguments requiring very different evidence. The first is settled by comparing task lists; the second needs a job evaluation framework, which is why comparable-work claims are both harder to bring and harder to defend.

Several states have also widened the establishment limit, allowing comparison across sites within a county, a region, or the entire employer rather than confining it to one physical location. For anybody working at a small site, that change alone can be the difference between having a comparator and having none at all. A five-person office contains very few potential comparisons; a five-hundred-person employer contains a great many.

Protected characteristics beyond sex

The federal Equal Pay Act addresses sex. Pay discrimination on other grounds is reachable under broader anti-discrimination law, but that requires proving discrimination rather than showing a pay difference and shifting the burden — a meaningfully harder route in practice. Proving discrimination requires evidence about intent or effect that employees rarely hold, whereas pointing at a comparator and requiring justification requires only the comparison itself.

A number of states have closed that gap by writing other characteristics directly into their equal pay statutes, so the same burden-shifting structure applies. Where that has happened, an employee can point to a comparator and require the employer to justify the difference, rather than having to establish discriminatory intent or effect first. That is a change in procedure rather than in principle, and procedural changes of this kind decide far more cases than substantive ones do.

This is one of the least reported changes in the area and one of the most practically significant, because the burden-shifting structure is what makes equal pay claims viable at all. Moving a characteristic into that structure changes the odds substantially. It is also the sort of amendment that attracts no coverage at all, so it is worth checking your own state rather than assuming the federal shape applies.

Proactive obligations, which do not need a complaint

The third direction is different in kind. Rather than giving employees a route to challenge a difference, these provisions require employers to do something whether or not anybody ever complains. That matters because the great majority of pay differences are never challenged by anybody, so a regime depending on complaints reaches only the fraction that surface.

Pay audits are the clearest example. Several states encourage or require employers to review their own pay practices, and a few offer a safe harbor — an employer who conducts a genuine self-audit and corrects what it finds gains a defense against certain claims. That design is deliberate: it makes the audit worth doing rather than dangerous to do.

Salary history bans belong here too, as does the prohibition on pay secrecy policies. Restrictions on requiring employees to keep their pay confidential sit alongside the federal protection for discussing wages, and in several states they are broader, covering people the federal labor provision excludes, supervisors in particular. That gap is significant, because supervisors sit at exactly the level where pay conversations would be most informative and are excluded from the main federal protection.

What has not changed federally

It is worth being clear about the federal position, because it is stable and it is the floor everywhere. The Equal Pay Act and the anti-discrimination statutes are legislation and were not affected by the executive order revocations of 2025. What went in that period was a separate layer applying specifically to federal contractors, including its protection against retaliation for discussing pay.

So an article written before 2025 describing federal contractor obligations may be out of date, while an article describing the Equal Pay Act itself almost certainly is not. Those two are easy to conflate and the distinction is worth holding, because guidance mixing them is common.

A worked comparison of the two standards

Consider a woman working as a technical writer and a man working as a technical support specialist at the same employer, paid differently. Their daily tasks differ substantially — one writes documentation, the other resolves customer issues — though both require similar training, similar judgment and carry similar accountability. That combination — different tasks, similar demands — is exactly the case the three standards treat differently.

Under the federal equal work standard the claim struggles, because the duties are plainly not equal and the employer can say so in one sentence. Under a substantially similar standard it becomes arguable, turning on whether the skill and responsibility genuinely align. Under a comparable work standard it is a real claim, because the question shifts to whether the two roles are of comparable value to the organization — which is a question about job evaluation rather than about task lists.

Same facts, same employer, three different answers depending entirely on which state the work is performed in. Nothing about the jobs, the employer or the pay difference has changed between those three readings. That is why the state question comes before every other question in this area.

Which law to look at first

Start with your state’s equal pay statute rather than the federal one, because if the state standard is wider it governs, and if it is not you have lost five minutes. Reading the federal test first anchors you to the narrowest version of the question, which is the wrong place to start. Establish three things: which comparison standard applies, whether the establishment limit has been widened, and which characteristics are covered.

Then check whether your state has added the proactive obligations, because those may give you something without a claim at all. A pay audit requirement, a transparency obligation or a salary history ban can produce information or a correction through an ordinary conversation rather than a legal process, which is a better outcome for almost everybody involved. A correction reached through a pay audit costs an employer money and nothing else; one reached through litigation costs considerably more and takes years.

This is general information about how these laws differ rather than legal advice about your situation. State standards vary substantially and have been amended frequently over the past decade, so your state labor agency or an employment lawyer is the place to establish which test applies to you — and equal pay claims carry deadlines, so it is worth asking sooner rather than later.