820 ILCS 115/4
All wages earned by any employee during a semi-monthly or bi-weekly pay period shall be paid to such employee not later than 13 days after the end of the pay period in which such wages were earned. All wages earned by any employee during a weekly pay period shall be paid not later than 7 days after the end of the weekly pay period in which the wages were earned. All wages paid on a daily basis shall be paid insofar as possible on the same day as the wages were earned, or not later in any event than 24 hours after the day on which the wages were earned. Wages of executive, administrative and professional employees, as defined in the Federal Fair Labor Standards Act of 1938, may be paid on or before 21 calendar days after the period during which they are earned.
The terms of this Section shall not apply, if there exists a valid collective bargaining agreement which provides for a different date or for different arrangements for the payment of wages.
Employers shall pay to workers on strike or layoff, no later than the next regular payday, all wages earned up to the time of such strike or layoff.
Any employee who is absent at the time fixed for payment, or who for any other reason is not paid at that time, shall be paid upon demand at any time within a period of 5 days after the time fixed for payment; and after the expiration of the 5 day period, payment shall be made upon 5 days demand. Payment to the absent employee shall be made by mail if the employee so requests in writing.
All wages and final compensation shall be paid in lawful money of the United States, by check, redeemable upon demand and without discount at a bank or other financial institution readily available to the employee, by deposit of funds in an account in a bank or other financial institution designated by the employee, or by a payroll card that meets the requirements of Section 14.5. No employer may designate a particular financial institution, bank, savings bank, savings and loan, or currency exchange for the exclusive payment or deposit of a check for wages. No financial institution, bank, savings bank, savings and loan, or currency exchange shall refuse to honor a check for wages that exclusively designates, in violation of this Section, a particular bank, savings bank, savings and loan, or currency exchange as the exclusive place of payment or deposit except to the extent the bank, savings bank, savings and loan, or currency exchange is otherwise excused from honoring the check under Section 3-111 of the Uniform Commercial Code because the bank, savings bank, savings and loan, or currency exchange is not the drawee or the maker of the check.
820 ILCS 115/4