The Equal Pay Act of 1963, aimed at abolishing wage disparity based on sex, was signed into law by John F. Kennedy as part of his New Frontier Program.

The Equal Pay Act of 1963 is a United States labor law amending the Fair Labor Standards Act, aimed at abolishing wage disparity based on sex. It was signed into law on June 10, 1963, by John F. Kennedy as part of his New Frontier Program. In passing the bill, Congress stated that sex discrimination:

• depresses wages and living standards for employees necessary for their health and efficiency;
• prevents the maximum utilization of the available labor resources;
• tends to cause labor disputes, thereby burdening, affecting, and obstructing commerce;
• burdens commerce and the free flow of goods in commerce; and
• constitutes an unfair method of competition.

The gender pay gap or gender wage gap is the average difference between the remuneration for men and women who are employed. Women are generally found to be paid less than men. There are two distinct measurements of the pay gap: non-adjusted versus adjusted pay gap. The latter typically takes into account differences in hours worked, occupations chosen, education and job experience. In other words, the adjusted values represent how much women and men make for the same work, while the non-adjusted values represent how much the average man and woman make in total. In the United States, for example, the non-adjusted average woman's annual salary is 79–83% of the average man's salary, compared to 95–99% for the adjusted average salary. The reasons for the gap link to legal, social and economic factors. These include having children, parental leave, gender discrimination and gender norms. Additionally, the consequences of the gender pay gap surpass individual grievances, leading to reduced economic output, lower pensions for women, and fewer learning opportunities.

John Fitzgerald Kennedy, also known as JFK, was the 35th president of the United States, serving from 1961 until his assassination in 1963. He was the first Roman Catholic and youngest person elected president at 43 years. Kennedy served at the height of the Cold War, and the majority of his foreign policy concerned relations with the Soviet Union and Cuba. A member of the Democratic Party, Kennedy represented Massachusetts in both houses of the United States Congress prior to his presidency.