Equal Pay Act of 1963
In 1942, Republican congresswoman Winifred C. Stanley from Buffalo, N.Y. introduced H.R. 5056, Prohibiting Discrimination in Pay on Account of Sex, which did not pass at the time. The issue languished until 10 June 1963, when Congress passed the Equal Pay Act ("EPA" or the "Act") as an amendment to the Fair Labor Standards Act, to "prohibit discrimination on account of sex in the payment of wages by employers."
Equal pay for equal work
The EEC's legislation was clarified in 1975 by the binding and directly applicable equal pay directive 75/117/EEC. This prohibited all discrimination on the grounds of sex in relation to pay; this and other directives were integrated into a single Directive in 2006 (2006/54/EC).