The Illinois final paycheck law sets the deadline for your final paycheck: at the time of separation if possible, and in no case later than the next regularly scheduled payday if your employer ended the job, and at the time of separation if possible, and in no case later than the next regularly scheduled payday (the statute makes no distinction) if you quit.
This guide gives the exact Illinois final paycheck law deadline with the date we verified it, what the employer owes if the check is late, whether your unused vacation must be paid, and how to file a wage claim. Rules verified against the statute on 2026-10-08; confirm the current rule with Illinois Department of Labor or an attorney before you rely on it.
Illinois Final Paycheck Law at a Glance
| If you were fired | At the time of separation if possible, and in no case later than the next regularly scheduled payday |
| If you quit | At the time of separation if possible, and in no case later than the next regularly scheduled payday (the statute makes no distinction) |
| If you were laid off | At the time of separation if possible, and in no case later than the next regularly scheduled payday |
| Statute | 820 ILCS 115/5 |
| Penalty for a late check | Damages of 5% of the underpayment per month it stays unpaid, plus fees (820 ILCS 115/14) |
| Unused vacation owed? | Yes — accrued vacation must be paid out |
| Where to file a wage claim | Illinois Department of Labor |
In This Illinois Final Paycheck Law Guide:
The Illinois Final Paycheck Law Deadline
If the employer fires you or lays you off, the Illinois final paycheck law sets the due date like this: at the time of separation if possible, and in no case later than the next regularly scheduled payday (820 ILCS 115/5).
Under the Wage Payment and Collection Act, final compensation includes earned commissions and earned bonuses, so they generally belong in the final check once they are earned under the agreement. Bonuses the employer may give or withhold at its own discretion generally aren’t covered, so check the terms of your commission or bonus agreement.
Enter your last day and how the job ended, and get the exact Illinois due date, the statute and the penalty if it is late.
Illinois Final Paycheck Law at a Glance
Rules verified against the statute on 2026-10-08; confirm the current rule with Illinois Department of Labor or an attorney before you rely on it. The statute row is where to check it yourself.
| Deadline if fired | At the time of separation if possible, and in no case later than the next regularly scheduled payday |
| Deadline if quit | At the time of separation if possible, and in no case later than the next regularly scheduled payday (the statute makes no distinction) |
| Deadline if laid off | At the time of separation if possible, and in no case later than the next regularly scheduled payday |
| Statute | 820 ILCS 115/5 |
| Late-payment penalty | Damages of 5% of the underpayment per month it stays unpaid, plus fees (820 ILCS 115/14) |
| Unused vacation / PTO | Yes — accrued vacation must be paid out |
| PTO rule | The monetary equivalent of all earned, unused vacation must be paid as part of final compensation at the final rate of pay; no contract or policy may provide for forfeiture of earned vacation at separation (820 ILCS 115/5). |
| Deductions allowed | Only deductions required by law, for the worker’s benefit, or authorized in writing at the time |
| Wage-claim agency | Illinois Department of Labor |
| File a wage claim | https://labor.illinois.gov/laws-rules/fls/wage-payment-and-collection-act.html |
Illinois Final Paycheck Law If You Quit
If you quit, the Illinois final paycheck law rule is: at the time of separation if possible, and in no case later than the next regularly scheduled payday (the statute makes no distinction). Your final paycheck is wages and benefits you have already earned, and state law requires the employer to pay it.
Illinois law generally doesn’t require severance, but severance promised in a contract or written policy may be enforceable under its terms. An Illinois employer can use direct deposit or a payroll card only with the worker’s voluntary written consent, and it can’t make either the only way to get paid.
A worker can also ask in writing for the final compensation to be paid by check and mailed, and the employer must do so.
Unused Vacation and PTO Under Illinois Final Paycheck Law
The monetary equivalent of all earned, unused vacation must be paid as part of final compensation at the final rate of pay; no contract or policy may provide for forfeiture of earned vacation at separation (820 ILCS 115/5). A policy cannot take away vacation the law treats as earned wages.
What the Illinois Final Paycheck Law Does If the Check Is Late
The penalty is the lever: damages of 5% of the underpayment per month it stays unpaid, plus fees (820 ILCS 115/14). An employer may withhold only deductions the law requires or the worker freely agreed to in writing at the time. If the employer disputes the amount owed, it still must pay the part it agrees is due, on time and with no conditions.
What Can Be Deducted From a Final Check in Illinois
Only deductions required by law, for the worker’s benefit, or authorized in writing at the time
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How to File a Wage Claim Under the Illinois Final Paycheck Law
Workers can file a Wage Payment and Collection Act claim with the Illinois Department of Labor online, after creating an Illinois Public ID account. The paper Wage Complaint Form can also be emailed to [email protected], but IDOL says emailed, mailed or faxed claims take longer to process. Attach paystubs, W-2s, 1099s or other records showing the employer’s name and your rate of pay.
Under current law, the claim generally must be filed within one year after the final compensation was due.
IDOL reviews the claim, notifies the employer and asks for a response. If the claim doesn’t resolve, the department may schedule an administrative hearing and can issue an order requiring payment. You can check the claim’s status online, and filing with IDOL doesn’t take away your right to bring your own claim in court. Yes.
A worker can sue for unpaid final wages in Illinois small claims court for claims up to 10000, not counting interest and costs.
Other Illinois Final Paycheck Law Rules to Know
Illinois counts earned commissions and earned bonuses as final compensation, and IDOL limits its investigation to the 3 years before the complaint date. A bill that would extend the one-year filing window to 3 years (HB4214) was sent to the House Rules Committee on January 14, 2026, and no later action turned up, so confirm the current deadline with IDOL.
Think your employer owes you money or broke the law?
You do not need a lawyer to file a wage claim: Illinois Department of Labor takes the complaint for free and can order the employer to pay. If the amount is large or the employer has a history, an employment attorney can take the case — the state bar referral service is the place to start.
Illinois — the bottom line
- The Illinois final paycheck law sets a deadline that runs from your last day: at the time of separation if possible, and in no case later than the next regularly scheduled payday if the employer ended the job.
- Under the Illinois final paycheck law, a late check costs the employer — the penalty is the lever that makes a wage claim worth filing.
- The Illinois final paycheck law treats unused vacation as wages that must be paid out; check the policy, then the statute.
Frequently Asked Questions
When is my final paycheck due in Illinois if I was fired?
Under the Illinois final paycheck law, at the time of separation if possible, and in no case later than the next regularly scheduled payday.
When is my final paycheck due in Illinois if I quit?
At the time of separation if possible, and in no case later than the next regularly scheduled payday (the statute makes no distinction)
Does Illinois have to pay out my unused vacation?
The monetary equivalent of all earned, unused vacation must be paid as part of final compensation at the final rate of pay; no contract or policy may provide for forfeiture of earned vacation at separation (820 ILCS 115/5).
What happens if an Illinois employer pays the final check late?
Damages of 5% of the underpayment per month it stays unpaid, plus fees (820 ILCS 115/14)
How do I file a wage claim in Illinois?
Workers can file a Wage Payment and Collection Act claim with the Illinois Department of Labor online, after creating an Illinois Public ID account. The paper Wage Complaint Form can also be emailed to [email protected], but IDOL says emailed, mailed or faxed claims take longer to process.
Official Illinois Sources & Resources
- Illinois Department of Labor: https://labor.illinois.gov/laws-rules/fls/wage-payment-and-collection-act.html
- Illinois final-pay statute (820 ILCS 115/5): https://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2402&ChapterID=68
- Verified source: https://ilga.gov/legislation/ilcs/documents/082001150K5.htm
- U.S. Department of Labor, Wage and Hour Division — state payday requirements: dol.gov
This Illinois final paycheck law guide was last verified against official Illinois sources in October 2026. Rules change — confirm the current figure with the state agency or a licensed attorney.
More Illinois Workplace Rights Guides
- Illinois Non Compete Law: Is Yours Enforceable?
- Illinois Unemployment Benefits: How Much and How Long
- Illinois Unemployment Eligibility: Who Qualifies
- Unemployment and Workplace Rights Guides for All 50 States
Disclaimer: This guide is general information, not legal or financial advice. My Unemployment Rights is an independent educational resource, not a government agency and not a law firm. Final-paycheck deadlines, penalties and non compete rules change — every figure here carries the date we verified it. Confirm the current rule with your state labor department or a licensed attorney before you act.