740 ILCS 45/20

(a) In addition to any other civil liability or criminal penalties provided by law, a person who the Court of Claims or the Attorney General finds has willfully misstated or omitted facts relevant to the determination of whether compensation is due under this Act or of the amount of that compensation, whether in making application for compensation or in the further proceedings provided for in this Act, shall be denied compensation under this Act.

(b) A person who is convicted of having willfully misstated or omitted facts relevant to the determination of whether compensation is due under this Act or of the amount of that compensation, whether in making application for compensation or in the further proceedings provided for in this Act, shall be guilty of a Class A misdemeanor.