Illinois amended its Day and Temporary Labor Services Act in 2023. One change matters to every plant that uses temps: equal pay. It took effect April 1, 2024, according to a Taft Law bulletin. The trigger was first 90 days at one client; amendments signed in August 2024 changed it to more than 720 hours at the same client in a 12-month period, according to Smith Amundsen. Past that point, the temp must be paid at least what the client's lowest-paid comparable direct hire with the same seniority earns.
A second piece, equal benefits or their cash equivalent, has been in court since then. A federal judge paused it in March 2024. Illinois amended the law again in August 2024, and in May 2025 a federal court declined to block the revised version, according to Smith Amundsen. Its implementing rules were still pending at that point. Ask your counsel where it stands before you price a long temp assignment.
The practical effect: in Illinois, a long temp assignment no longer saves much on wages. Decide early whether a role is a short-term need (temporary staffing), a trial (contract-to-hire with a conversion date before the 720-hour mark, about 18 weeks of full-time work) or a permanent seat (direct hire). Plants in Northwest Indiana are outside this Illinois law. For the metro's wider labor market and the city's own hiring rules, see our Chicago staffing page.