Illinois Overtime Pay Calculator
Calculate overtime pay for Illinois workers. Illinois follows the federal FLSA rule requiring 1.5 times the regular rate for hours worked over 40 per workweek.
How to use this tool
- Enter regular hours worked, overtime hours worked and regular hourly rate in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your total gross pay and the full breakdown beneath it.
⚠ This tool provides general estimates for education only and is not financial, tax or legal advice. Figures may not reflect your situation — verify with a qualified professional.
Formula
Overtime Rate = Regular Rate × 1.5
Regular Pay = Regular Hours × Regular Rate
Overtime Pay = Overtime Hours × Overtime Rate
Total Pay = Regular Pay + Overtime Pay
How it works
Illinois overtime law (820 ILCS 105) mirrors the federal Fair Labor Standards Act, requiring that non-exempt employees receive at least 1.5 times their regular hourly rate for all hours worked beyond 40 in a single workweek. The calculator computes regular pay at the straight-time rate and overtime pay at time-and-a-half, then sums them for total gross weekly pay.
Worked example
Illinois worker: 48 hours at $18/hr
- Regular hours: 40; Overtime hours: 8; Hourly rate: $18.00
- Overtime rate = $18.00 × 1.5 = $27.00/hr
- Regular pay = 40 × $18.00 = $720.00
- Overtime pay = 8 × $27.00 = $216.00
- Total gross pay = $720.00 + $216.00 = $936.00
Total gross pay for the week is $936.00.
Common mistakes to avoid
- Assuming Illinois follows California-style daily overtime rules: Illinois only requires overtime for hours over 40 in a workweek, not after 8 hours in a single day.
- Misclassifying employees as exempt based solely on job title or salary: under Illinois law, exemptions generally track FLSA but employees must meet both the salary threshold and the relevant duties test.
- Failing to apply the Illinois minimum wage as the floor for the regular rate: if an employee's effective hourly rate falls below the Illinois minimum wage (currently $14/hour as of 2024, rising to $15 in 2025), the overtime calculation must use the minimum wage as the base.
Key terms
- What is Illinois overtime law?
- Under 820 ILCS 105/4a (Illinois Minimum Wage Law), non-exempt employees must receive 1.5 times their regular rate for hours exceeding 40 in a workweek, consistent with the federal FLSA.
- Who is exempt from Illinois overtime?
- Employees in executive, administrative, or professional roles meeting the FLSA salary and duties tests are typically exempt from overtime requirements.
- Does Illinois have daily overtime rules?
- Illinois generally follows the federal workweek standard (over 40 hrs/week triggers overtime). There is no Illinois-specific daily overtime rule for most workers.
- What is the Illinois minimum wage?
- As of 2025, the Illinois minimum wage is $15.00 per hour for most workers, with the overtime rate being $22.50 per hour.
Frequently asked questions
- Does Illinois have any overtime rules beyond the federal FLSA?
- Illinois's overtime requirements under the Illinois Minimum Wage Law largely mirror the FLSA (1.5x after 40 hours per workweek). However, Illinois has its own minimum wage schedule that can exceed the federal $7.25/hour floor, which affects the overtime base rate for minimum-wage workers.
- Are tipped employees entitled to overtime in Illinois?
- Yes. Tipped employees are entitled to 1.5x the full minimum wage for overtime hours, not 1.5x the tipped minimum wage. The tip credit reduces the base pay but does not reduce the overtime premium below 1.5x of the regular Illinois minimum wage.
- Is there a separate overtime rule for domestic workers in Illinois?
- Yes. Under the Illinois Domestic Workers' Bill of Rights, domestic workers (housekeepers, nannies, caregivers) who work for the same employer more than 20 hours per week are entitled to overtime at 1.5x their regular rate after 40 hours, plus an additional day of rest after working 6 consecutive days.