Overtime in Illinois

no employer shall employ any of his employees who in any workweek is engaged in commerce or in the production of goods for commerce, or is employed in an enterprise engaged in commerce or in the production of goods for commerce, for a workweek longer than forty hours unless such employee receives compensation for his employment in excess of the hours above specified at a rate not less than one and one-half times the regular rate at which he is employed. … No employer shall be deemed to have violated subsection (a) by employing any employee of a retail or service establishment for a workweek in excess of the applicable workweek specified therein, if (1) the regular rate of pay of such employee is in excess of one and one-half times the minimum hourly rate applicable to him under section 206 of this title, and (2) more than half his compensation for a representative period (not less than one month) represents commissions on goods or services. … Any employer may employ any employee for a period or periods of not more than 10 hours in the aggregate in any workweek in excess of the maximum workweek specified in subsection (a) without paying the compensation for overtime employment prescribed in such subsection, if during such period or periods the employee is receiving remedial education that is— … in determining the hours of employment of such an employee to which the rate prescribed by subsection (a) applies there shall be excluded the hours such employee was employed in charter activities by such employer if (1) the employee's employment in such activities was pursuant to an agreement or understanding with his employer arrived at before engaging in such employment, and (2) if employment in such activities is not part of such employee's regular employment. … No employer engaged in the operation of a hospital or an establishment which is an institution primarily engaged in the care of the sick, the aged, or the mentally ill or defective who reside on the premises shall be deemed to have violated subsection (a) if, pursuant to an agreement or understanding arrived at between the employer and the employee before performance of the work, a work period of fourteen consecutive days is accepted in lieu of the workweek of seven consecutive days for purposes of overtime computation and if, for his employment in excess of eight hours in any workday and in excess of eighty hours in such fourteen-day period, the employee receives compensation at a rate not less than one and one-half times the regular rate at which he is employed. … No public agency shall be deemed to have violated subsection (a) with respect to the employment of any employee in fire protection activities or any employee in law enforcement activities (including security personnel in correctional institutions) if— … in a work period of 28 consecutive days the employee receives for tours of duty which in the aggregate exceed the lesser of (A) 216 hours, or (B) the average number of hours (as determined by the Secretary pursuant to section 6(c)(3) of the Fair Labor Standards Amendments of 1974) in tours of duty of employees engaged in such activities in work periods of 28 consecutive days in calendar year 1975 … No employer shall be deemed to have violated subsection (a) by employing any employee for a workweek in excess of that specified in such subsection without paying the compensation for overtime employment prescribed therein if such employee is so employed— … and if such employee receives compensation for employment in excess of twelve hours in any workday, or for employment in excess of fifty-six hours in any workweek, as the case may be, at a rate not less than one and one-half times the regular rate at which he is employed. … For a period or periods of not more than fourteen workweeks in the aggregate in any calendar year, any employer may employ any employee for a workweek in excess of that specified in subsection (a) without paying the compensation for overtime employment prescribed in such subsection, if such employee— … such employment by such employer which is in excess of ten hours in any workday, and … such employment by such employer which is in excess of forty-eight hours in any workweek,

Overtime must be paid after 40 hour of work per week at time and one-half the regular rate.