The federal Equal Pay Act (EPA) and its many state analogs require equal pay for equal (or, in some states, “substantially similar”) work.  The EPA contains a so-called “catch-all” defense to equal pay claims, permitting wage differentials if employers can show that they are “based on any factor other than [protected category].”  But this catch-all defense has been under scrutiny in courts and legislatures around the country. As we recently reported, an en banc Ninth Circuit rejected an employer’s argument that sole reliance on prior pay could be a “factor other than sex” within the meaning of the EPA. The Ninth Circuit’s finding is an outlier among circuit courts in this respect, but it fits a broader trend to narrow the “catch-all” affirmative defense, particularly at the state level. READ MORE →