(820 ILCS 70/15)
    Sec. 15. Retaliatory or discriminatory acts. A person shall not retaliate or discriminate against a person because the person has done or was about to do any of the following:
        (1) File a complaint under this Act.
        (2) Testify, assist, or participate in an
    
investigation, proceeding, or action concerning a violation of this Act.
        (3) Oppose a violation of this Act.
(Source: P.A. 96-1426, eff. 1-1-11.)