210 ILCS 46/3-608

A licensee or its agents or employees shall not transfer, discharge, evict, harass, dismiss, or retaliate against a resident, a resident's representative, or an employee or agent who makes a report under Section 2-107, brings or testifies in an action under Sections 3-601 through 3-607, or files a complaint under Section 3-702, because of the report, testimony, or complaint.