The Equal Pay Act in Illinois requires equal pay for the same or substantially similar work based on sex and for African-American employees.[1]
a. Affirmative Defenses: To justify a pay disparity, an employer can assert that it was based on: seniority system, merit system, a system that measures earnings by quantity or quality of production, and a differential based on a factor other than sex, race, or a factor that would be considered unlawful discrimination under the Illinois Human Rights Act, provided that the factor is not based on or derived from a differential in compensation based on sex, race, or another protected characteristic, is job-related with regard to the position and consistent with a business necessity, and accounts for the differential.[2]
b. Retaliation: Employers cannot interfere with, restrain, or deny the exercise of or your attempt to exercise your rights under the Illinois Equal Pay Act or retaliate against you for encouraging any person to exercise their rights under the Illinois Equal Pay Act.[3] Employers cannot discharge or discriminate against you because you have filed a charge or have instituted or caused to be instituted a proceeding to the state’s Equal Pay Act, have or will provide information relating to a proceeding, testified or are about to testify in a related proceeding, or failed to comply with any wage or salary history inquiry.[4]
[1] 820 Ill. Comp. Stat. 112/10 (2024).
[2] 820 Ill. Comp. Stat. 112/10 (2024).
[3] 820 Ill. Comp. Stat. 112/10 (2024).
[4] 820 Ill. Comp. Stat. 112/10 (2024).