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Unpaid wages in Illinois: what the law says

My employer owes me wages

State law

What the statute says

Final pay detail
820 ILCS 115/5 (Illinois Wage Payment and Collection Act): "Every employer shall pay the final compensation of separated employees in full, at the time of separation, if possible, but in no case later than the next regularly scheduled payday for such employee." The deadline is the SAME whether the employee was fired or quit - the Act draws no distinction, which is why no fixed number of days exists.
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The same section requires earned but unused vacation to be paid out on separation at the employee's final rate of pay and prohibits forfeiture of accrued vacation on termination. Separately, 820 ILCS 115/3 sets ordinary pay frequency (not read in this pass).

Penalty for paying late
820 ILCS 115/14(a): an employee not timely paid wages, final compensation, or wage supplements may recover, through an IDOL claim OR a civil action but not both, the underpayment plus "damages of 5% of the amount of any such underpayments for each month following the date of payment during which such underpayments remain unpaid," plus attorney's fees.
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This 5%/month accrues without a cap or an end date (contrast California's 30-day cap), so it compounds the longer the employer withholds. 820 ILCS 115/14(b) adds, where the Department is involved and the employer fails to comply, an administrative fee of $500-$1,250 depending on the amount owed, a 20% penalty payable to the Department, and a penalty of "1% per calendar day" payable to the employee. 820 ILCS 115/14(d): civil penalty up to $500 per violation for pay-stub and other Act violations. 820 ILCS 115/14(a-5): willful refusal to pay is criminal - Class B misdemeanor if the amount owed is $5,000 or less, Class A misdemeanor if over $5,000, and a Class 4 felony for a repeat violation within 2 years. 820 ILCS 115/14(c): retaliatory discharge is a Class C misdemeanor and the employee recovers legal and equitable relief plus attorney's fees.

State minimum wage
$15.00 / hour
Overtime beyond federal law
Illinois overtime is not broader than federal law on either the rate or the threshold. 820 ILCS 105/4a requires overtime for hours worked in excess of 40 per workweek "at a rate not less than 1 1/2 times the regular rate." There is no daily overtime rule in Illinois — nothing like California's 8-hour day or double-time.
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The Illinois Department of Labor puts it this way: "Overtime must be paid after 40 hour of work per week at time and one-half the regular rate." Illinois also has a separate One Day Rest In Seven Act (820 ILCS 140), administered by the same IDOL division; it is a distinct requirement from overtime and is not covered here.

Liquidated damages
Two distinct regimes depending on which Act is pleaded. (1) Minimum wage / overtime - 820 ILCS 105/12(a): an employee may recover in a private civil action "treble the amount of any such underpayments" plus "damages of 5% of the amount of any such underpayments for each month following the date of payment during which such underpayments remain unpaid," plus reasonable attorney's fees allowed by the court.
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Treble damages under the Illinois Minimum Wage Law are materially more generous than the FLSA's double damages. (2) Unpaid wages / final compensation generally - 820 ILCS 115/14(a): underpayment plus 5% per month unpaid, plus attorney's fees (no trebling under the IWPCA).

Time limit to sue
3 years

THREE years to sue in court under 820 ILCS 105/12 (five for the Director). BUT the deadline that actually bites is ONE YEAR: 820 ILCS 115/11 — "Complaints shall be filed within one year after the wages, final compensation, or wage supplements were due" — for the free IDOL administrative route (P.A. 103-201 eff.

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2024-01-01; P.A. 104-135 eff. 2025-08-01).

Read this before relying on the numbers above

The $15.00 rate is the Illinois state floor. Chicago and Cook County set their own higher minimum wages by local ordinance, on their own adjustment schedules, so if you worked inside either one your floor was above the state figure. The state rate itself is not adjusted for inflation and has no further increase scheduled.

Read it yourself

Official sources. If a number below matters to your case, open the statute and read it — laws get amended, and cities often stack stricter local rules on top.

Last checked: 2026-08-17

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Jab Today is not a law firm and this is not legal advice. This page describes how the statutes read, which is a different thing from what will happen in your case. Laws are amended and local ordinances often add stricter rules. For advice about your situation, consult a licensed attorney in your state.