820 ILCS 305/25
The invalidity of any portion of this Act shall in no way affect the validity of any other portion thereof which can be given effect without such invalid part.
If any of the provisions of this Act providing for compensation for injuries to or death of employees shall be repealed or adjudged invalid or unconstitutional, the period intervening between the occurrence of any injury or death and such repeal or final adjudication of invalidity, shall not be computed as a part of the time limited by law for the commencement of any action relating to such injury or death, but the amount of any compensation which may have been paid for any such injury shall be deducted from any judgment for damages recovered on account of such injury. Any claims, disagreement or controversy existing or arising under "An Act to promote the general welfare of the people of this State by providing compensation for accidental injuries or death suffered in the course of employment within this State, and without this State where the contract of employment is made within this State; providing for the enforcement and administering thereof, and a penalty for its violation, and repealing an Act entitled, 'An Act to promote the general welfare of the people of this State by providing compensation for accidental injuries or death suffered in the course of employment', approved June 10, 1911; in force May 1, 1912", approved June 28, 1913, as amended, shall be adjusted in accordance with the provisions of said Act, notwithstanding the repeal thereof, or may by agreement of the parties be adjusted in accordance with the method of procedure provided in this Act for the adjustment of differences, jurisdiction to adjust such differences so submitted by the parties being hereby conferred upon the Commission.
820 ILCS 305/25