55 ILCS 5/3-11004.1
No later than 60 days after the effective date of this amendatory Act of the 96th General Assembly, for the purpose of assisting Cook County residents in reclaiming uncashed checks issued by Cook County, the Cook County Treasurer must post on the Cook County Treasurer's official website information related to uncashed checks issued in the regular course of county business to Cook County residents. The Cook County Treasurer must also post the procedure for a person to receive a replacement check. The checks must be for an amount of $5 or more. This Section applies only to a check that remains uncashed by the payee for no less than one year and no more than 5 years from its issue date.
Cook County may not provide notice of uncashed checks in a manner inconsistent with the provisions of this Section. This Section is a limitation under subsection (i) of Section 6 of Article VII of the Illinois Constitution on the concurrent exercise by home rule units of powers and functions exercised by the State.
55 ILCS 5/3-11004.1