15 ILCS 405/10.07

Warrants not presented to the State Treasurer within 12 months of the date of issuance shall be void, and the State Treasurer shall not pay any warrant presented to him or her after 12 months. Each warrant shall clearly bear a warning that it is void after 12 months from the date of issuance. Warrants outstanding after 12 months after issuance by the comptroller shall be cancelled by the comptroller and the State Treasurer. Each warrant shall show on its face the date of its issuance.