Ill. Admin. Code tit. 44, § 2000.2570
a) Public Contracts. Every party to a public contract and every eligible bidder shall:
4) Have written sexual harassment policies that shall include, at a minimum, the following information:
G) protection against retaliation as provided by Section 6-101 of the Illinois Human Rights Act (IHRA) [775 ILCS 5].
A copy of the policies shall be provided to the Department of Human Rights upon request.