Illinois: Pay Frequency and Wage-Payment Lag Requirements

Requirements one by one

General frequency and monthly exceptions

Section 115/3 starts with an at-least-semimonthly rule for every covered
employee. It then permits monthly payment for executive, administrative, and
professional employees as defined by the federal exemption and separately says
commissions may be paid monthly. The exception therefore turns on the worker's
real exempt classification or the commission wage type, not merely an employer
label such as "salary."

Each payroll cycle has its own lag

Section 115/4 separates frequency from the deadline after period close. Weekly
wages are due within seven days. Biweekly and semimonthly wages are due within
13 days. Daily wages should be paid the same day when possible and always
within 24 hours. The specified executive, administrative, and professional
wages may be paid within 21 calendar days after the earning period.

For example, a biweekly period ending Friday must be paid no later than the
thirteenth day after that Friday. Issuing checks every two weeks does not cure a
schedule that consistently delays each period beyond the 13-day ceiling.

Daily-pay agency workers may request aggregation

An employment or labor placement agency that ordinarily pays daily must notify
daily-pay workers that they may request the agency to hold the wages and issue
one weekly or semimonthly check instead. The worker makes that choice in
writing. This is a specific notice right; §§ 115/3-.4 do not create a general
advance-notice period for every employer changing its regular payday.

Enforcement

Section 115/11 permits a Department of Labor complaint within one year after
the wages were due, or a circuit-court action without first exhausting the
agency route. Section 115/14 says the employee uses a Department claim or civil
action, not both, and recovers the underpayment plus 5% of it for every month it
remains unpaid. A civil action also includes costs and reasonable attorney's
fees.

An employer that ignores a Department or court demand/order faces an additional
administrative fee, a 20% penalty payable to the Department, and a 1%-per-day
penalty payable to the employee after the statutory compliance period.

What trips people up

Semimonthly and biweekly payrolls share the same 13-day lag but are different
frequencies. Semimonthly means twice per calendar month; biweekly means every
two weeks. Illinois expressly regulates both schedules.

Monthly payroll is not available merely because a worker receives a salary.
The statutory monthly exception names executive, administrative, and
professional employees as defined under the federal exemption. A salaried
nonexempt employee remains within the general at-least-semimonthly rule.

A valid collective-bargaining agreement may provide a different payment date
or arrangement under § 115/4. That is an express statutory alternative, not a
general ability for an individual agreement to waive the Act's lag rules.

Common questions

Can an Illinois employer pay every employee monthly?

No. Monthly pay is expressly allowed for the specified exempt employees and
for commissions; the general rule is at least semimonthly.

How long after a biweekly period may payday occur?

No later than 13 days after the pay period ends, under § 115/4.

Can an employee sue without filing with the Department first?

Yes. Section 115/11 permits a circuit-court action without exhausting the
administrative process, but § 115/14 prevents double recovery through both a
Department claim and civil action.

Statutes and sources

• 820 ILCS 115/1-.2. Coverage and definitions. Official § 115/1
  and official § 115/2
  (accessed July 12, 2026).
• 820 ILCS 115/3. General semimonthly frequency, monthly exceptions, and
  daily-pay-worker election. Official text
  (accessed July 12, 2026).
• 820 ILCS 115/4. Seven-, 13-, 24-hour, and 21-day lag rules plus CBA
  alternative. Official text
  (accessed July 12, 2026).
• 820 ILCS 115/11. Administrative and civil enforcement routes.
  Official text
  (accessed July 12, 2026).
• 820 ILCS 115/14(a)-(b). Underpayment damages, fees, and order-enforcement
  penalties. Official text
  (accessed July 12, 2026).
• HB 4214 (104th General Assembly). Pending one-year-to-three-year agency-
  claim extension. Official status
  (checked July 25, 2026).