In Illinois, 8 hours is defined as a legal day's work in all occupations, except farming, unless there is a special contract or agreement to the contrary (IL Comp Stat. Ch. 820 Sec. 145/1). This provision, however, does not prevent employees from working any amount of overtime or extra hours. Employers must pay employees overtime of 1 1 / 2 times their regular rate after working 40 hours in a workweek (IL Comp Stat. Ch. 820 Sec. 105/4(a)).
“Hours worked” means all the time an employee is required to be on duty, or on the employer's premises, or at other prescribed places of work, and any additional time he or she is required or permitted to work for the employer.