Illinois’ Equal Pay Act of 2003 now requires Illinois employers with 100 or more employees (who are required to file an EEO-1 report with the federal Equal Employment Opportunity Commission (“EEOC”)) to apply for an Equal Pay Registration Certificate (“EPRC”) from the Illinois Department of Labor (“IDOL”). As part of this certification process, covered employers must provide a copy of their latest EEO-1 filing, in addition to a list of all employees employed during the past calendar year, categorized by gender, race, and ethnicity, and including start dates, the total wages paid, and “any other information the Department [of Labor] deems necessary to determine if pay equity exists among employees”. The IDOL has issued explanatory FAQs, which are available here to provide further clarification.