Starting Jan. 1, Illinois employers must offer workers paid time off based on hours worked, with no need to explain the reason for their absence as long as they provide notice in accordance with reasonable employer standards.

Illinois employees will accrue one hour of paid leave for every 40 hours worked up to 40 hours total, although the employer may offer more. Employees can start using the time once they have worked for 90 days.

https://apnews.com/article/mandatory-paid-leave-work-illinois-law-435fabf7f5ce88d9ca9f1df692dadc2d