No. Men and women are to receive equal pay for the same or substantially similar work that is performed for the same employer, in the same county. 42. Equal pay for equal work.Private organizations employing 100 or more in Illinois must obtain an equal pay registration certificate from the state's DOL that's good for two years. Illinois has new equal pay employment certification requirements for companies with over 100 employees. Equal Pay Mandate for Temporary Workers: HB 2862 significantly expands Illinois' Day and Temporary Labor Services Act . Amount of work: The amendments clarify the amount of work that entitles a temporary laborer to equal pay. The new program, called the Equal Pay Registration, requires employers to submit annual compensation reports and employment law compliance certifications.