The Paycheck Fairness Act is a proposed United States labor law that would add procedural protections to the Equal Pay Act of 1963 and the Fair Labor Standards Act as part of an effort to address the gender pay gap in the United States. A Census Bureau report published in 2008 stated that women's median annual earnings were 77.5% of men's earnings. Recently this has narrowed, as by 2018, this was estimated to have decreased to women earning 80-85% of men's earnings. One study suggests that when the data is controlled for certain variables, the residual gap is around 5-7%; the same study concludes that the residual is because "hours of work in many occupations are worth more when given at particular moments and when the hours are more continuous. That is, in many occupations, earnings have a nonlinear relationship with respect to hours."

Barbara Ann Mikulski is an American politician and social worker who served as a United States senator from Maryland from 1987 to 2017. A member of the Democratic Party, she also served in the United States House of Representatives from 1977 to 1987. Mikulski is the third-longest-serving female United States Senator, and the longest-serving U.S. Senator in Maryland history.