The Equal Pay Act, an amendment to the Fair Labor Standards Act designed to require equal pay for women doing the same work as men. The act states that employees of one sex may not be paid wages at a rate lower than that paid to employees of the opposite sex for doing roughly equivalent work. Specially, if the work requires equal skills, effort, and responsibility and involves similar working conditions, employees of both sexes must receive equal pay, unless the differences in pay stem from a seniority system, the quantity or quality of production, or “any factor other than sex.”