Under Illinois law, employees must be paid 1 1/2 times their regular rate of pay for all hours worked in excess of 40 in a workweek (IL Comp. Stat. Ch. 820 Sec. 105/4a). Because this requirement is identical to that prescribed by the federal Fair Labor Standards Act, the net effect of the state law is to extend overtime protections to employees not covered by federal law (IL Comp. Stat. Ch. 820 Sec. 104(a)). Illinois does not require that overtime be paid for hours worked in excess of 8 per day or on weekends or holidays.
Illinois exempts anyone employed in a bona fide executive, administrative, or professional capacity from overtime pay requirements as defined by federal law (IL Comp. Stat. Ch. 820 Sec. 105/4a). When choosing whether to apply state or federal law, employers must apply the law that is most beneficial to the employee.