The short answer
How does overtime work in Illinois?
Under the Illinois Minimum Wage Law, non-exempt employees earn 1.5× their regular rate for hours over 40 in a workweek. Illinois has no daily overtime, and working Sundays or holidays doesn't on its own trigger premium pay.
Illinois overtime rules at a glance
| Weekly overtime | 1.5× after 40 hours in a workweek |
| Daily overtime | None |
| Sundays and holidays | No premium required by law; your employer must honor any premium it promises |
| Comp time instead of overtime pay | Not allowed for private employers |
| Mandatory overtime | Allowed, within the One Day Rest in Seven Act |
Being paid a salary doesn't by itself make someone exempt. Exempt executive, administrative and professional employees must generally be salaried and mainly do exempt duties, following the federal definitions.
Worked example
At $22 an hour, a 50-hour week pays 40 × $22 = $880 regular plus 10 × $33 = $330 overtime, a total of $1,210 before taxes.
Does the "no tax on overtime" deduction apply?
Starting with 2025 tax returns, workers can deduct qualified overtime pay on their federal income tax return, up to $12,500 a year ($25,000 for married couples filing jointly). The deduction phases out above $150,000 of modified adjusted gross income ($300,000 joint). Only the extra part of overtime pay, the "half" in time-and-a-half, counts, and only for overtime the federal Fair Labor Standards Act requires: hours over 40 in a workweek. Social Security and Medicare are still withheld from overtime pay. The calculator above estimates the federal premium for your week.
Assumptions and sources
Results are gross pay estimates for non-exempt employees paid by the hour. Special industry rules, local ordinances, union contracts and exemptions can change the result. Rules summarized from the Illinois Department of Labor minimum wage and overtime FAQ and the IRS. ToolPinch isn't a law firm; check with your state labor department or an employment lawyer about your situation.
Frequently asked questions
When does overtime start in Illinois?
After 40 hours in a workweek, at 1.5x the regular rate, for non-exempt employees.
Can an Illinois employer give comp time instead of overtime pay?
Not in the private sector. Overtime must be paid in money.
Do I get extra pay for working Sundays in Illinois?
Not by law. Only hours over 40 in the workweek earn 1.5x, unless your employer's policy promises more.
Can my employer require overtime in Illinois?
Yes, unless it would violate the One Day Rest in Seven Act, which generally guarantees at least 24 hours of rest in each workweek.
Is this calculator free?
Yes. It runs in your browser, needs no signup and doesn't store your hours or pay.