50 ILCS 615/25

With respect to the construction of public works funded by the proceeds described in Section 20, where the project has an estimated contract value of $500,000 or more, where there has been a written determination that the public interest in cost, timely and orderly construction, labor stability, and advancement of minority-owned and women-owned businesses and minority and female employment would be served by a project labor agreement, and where not otherwise prohibited by applicable law, the municipality or municipal corporation responsible for implementing the project shall in good faith negotiate a project labor agreement with labor organizations engaged in the construction industry. Any project labor agreement shall: (1) set forth effective, immediate, and mutually binding procedures for resolving jurisdictional disputes and grievances arising before completion of work; (2) contain guarantees against strikes, lockouts, or similar actions; (3) ensure a reliable source of skilled and experienced labor; (4) further public policy objectives as to improved employment opportunities for minorities and women in the construction industry to the extent permitted by State and federal law; (5) be made binding on all contractors and subcontractors on the public works project through inclusion of appropriate bid specifications in all relevant bid documents; and (6) include such other terms as the parties deem appropriate.