Illinois Code § 15

§ 15.

Act takes precedence. (a) In case of any conflict between the provisions of this Act and any other law (other than Section 5 of the State Employees Group Insurance Act of 1971 and other than the changes made to the Illinois Pension Code by Public Act 96-889), executive order or administrative regulation relating to wages, hours and conditions of employment and employment relations, the provisions of this Act or any collective bargaining agreement negotiated thereunder shall prevail and control. Nothing in this Act shall be construed to replace or diminish the rights of employees established by Sections 28 and 28a of the Metropolitan Transit Authority Act, Sections 2.15 through 2.19 of the Regional Transportation Authority Act. The provisions of this Act are subject to Section 5 of the State Employees Group Insurance Act of 1971. Nothing in this Act shall be construed to replace the necessity of complaints against a sworn peace officer, as defined in Section 2(a) of the Uniform Peace Officers' Disciplinary Act, from having a complaint supported by a sworn affidavit. (b) Except as provided in subsection (a) above, any collective bargaining contract between a public employer and a labor organization executed pursuant to this Act shall supersede any contrary statutes, charters, ordinances, rules or regulations relating to wages, hours and conditions of employment and employment relations adopted by the public employer or its agents. Any collective bargaining agreement entered into prior to the effective date of this Act shall remain in full force during its duration. (c) It is the public policy of this State, pursuant to paragraphs (h) and (i) of Section 6 of Article VII of the Illinois Constitution, that the provisions of this Act are the exclusive exercise by the State of powers and functions which might otherwise be exercised by home rule units. Such powers and functions may not be exercised concurrently, either directly or indirectly, by any unit of local government, including any home rule unit, except as otherwise authorized by this Act. (Source: P.A. 104-417, eff. 8-15-25.)