What precise language in The Paycheck Fairness Act provides protections not already provided in the The Equal Pay Act of 1963?

Equal Pay Act: In 1963, President Kennedy passed the Equal Pay Act to combat pay discrimination based on sex. The Act amended the Fair Labor Standards Act, clarifying that an employer may not pay an employee less than another employee of the opposite gender if they engage in the same work. (This may be exempted if pay is based on a factor other than sex, such as a merit or seniority system.) Although the Act’s focus was primarily on pay discrimination against women in the workforce, it protects both men and women from unequal pay. Paycheck Fairness Act: The 111th Congress first introduced the Paycheck Fairness Act in 2009 (as S. 182 and H.R. 12 in the Senate and the House, respectively) to expand the scope of the Equal Pay Act of 1963 and to further amend the Fair Labor Standards Act of 1938. The Act provided remedies to victims of discriminatory practices regarding the payment of wages on the basis of one’s gender.