When is your final paycheck due in Illinois?

The Illinois rule in full

Final compensation must be paid in full at the time of separation where possible, and in no case later than the next regularly scheduled payday. Final compensation is defined as wages, salaries, earned commissions, earned bonuses, the monetary equivalent of earned vacation and earned holidays, and any other compensation owed under an employment contract or agreement — so a commission or bonus already earned under the plan's own terms is included, while one that remained genuinely discretionary is not. Earned vacation is payable at your final rate of pay, and no employment contract or policy may provide for forfeiture of earned vacation on separation.

A payroll team will usually answer this question from its own calendar. The deadline comes from the statute, so it is worth checking the date you were given against the rule above before you accept it.

Does Illinois pay out unused PTO?

The monetary equivalent of all earned vacation is paid to you as part of final compensation, at your final rate of pay — and no employment contract or employment policy may provide for forfeiture of earned vacation time on separation. Illinois is unusually direct on this point: the anti-forfeiture rule sits in the statute itself. That rule is about earned vacation specifically, so it does not automatically follow that every balance an employer labels PTO must be cashed out. Sick pay and other promised benefits are payable where your contract or the employer's policy makes them owed, which puts the written policy back at the center of the question.

820 ILCS 115/2, 115/5

What it costs your employer to pay late

Damages of 5% of the underpayment for each month it remains unpaid. Further penalties apply only on non-compliance: where the employer fails to comply within 15 calendar days of a Department demand, or within 35 days of an administrative or court order, without seeking timely review, an additional 1% of the amount owed per calendar day runs to the employee and 20% of the amount owed runs to the Department.

What your employer may deduct

Deductions are permitted where they are required by law, are to your benefit, respond to a valid wage assignment or wage deduction order, or are made with your express written consent given freely at the time the deduction is made. That last condition matters: a consent signed at hire, months before the deduction, is not consent given at the time it is made.

820 ILCS 115/9

How to claim unpaid wages in Illinois

File a wage claim with the Illinois Department of Labor. The statutory damages run per month the wages stay unpaid, so the sum owed grows while a claim is pending rather than staying fixed at the missing amount.

Before you file

1. 1Ask payroll in writing for an itemized breakdown of the final payment and the date it was issued. A written record is what every later step depends on, and the request itself is often what resolves it.
2. 2Save your pay stubs, offer letter, any written notice of your last day, and the employer's PTO policy. Do it now if you still have system access.
3. 3Note the exact date the wages became due under the Illinois rule above, and the date you were actually paid. The gap between them is the claim.
4. 4If it is still unresolved, file with the agency above rather than waiting for HR. The filing deadline runs from when the wages were due, not from when the employer stops replying.

Illinois final paycheck questions