Ill. Admin. Code tit. 56, § 325.10
This Part shall apply to actions filed with the Department of Labor on or after January 1, 2015 under the Equal Pay Act of 2003 [820 ILCS 112], if the action also alleges a violation of the Illinois Human Rights Act [775 ILCS 5]. IDOL will refer these actions to IDHR for investigation pursuant to Section 15(d) of the Equal Pay Act of 2003.