There is no cap on how many hours you can work while collecting unemployment in Illinois. The state looks at what you earn in a week, not how long you were on the clock. If your gross wages stay under your Weekly Benefit Amount (WBA), you can still draw a full or partial payment for that week. Cross the line, and you get nothing until the next week resets the count.
Earnings Decide Eligibility, Not Hours
Every week you certify, IDES compares your gross wages to your WBA. Wages below the WBA keep you eligible for some level of benefit that week. Wages that meet or exceed it zero out your payment for that week.1Illinois Department of Employment Security. Partial Benefits (Working Part Time)
That means a person picking up 30 hours at a low hourly rate can still qualify, while someone working 10 hours at a high rate might not. Hours are irrelevant on their own. Only the dollar figure matters.
The 50% Cushion and How the Reduction Works
Illinois builds in a buffer. You can earn up to 50% of your WBA in a week with no reduction at all. Once your earnings cross that halfway mark, every dollar above it comes off your benefit dollar for dollar.1Illinois Department of Employment Security. Partial Benefits (Working Part Time)
Say your WBA is $400. Half of that is $200.
- Earn $150 in the week. You are under the $200 threshold, so your full $400 benefit pays out.
- Earn $275. The first $200 is disregarded. The extra $75 is subtracted from $400, leaving a $325 payment.
- Earn $400 or more. You hit or passed the WBA, so nothing pays for that week.
If the arithmetic lands on cents, IDES rounds up to the next whole dollar, provided the rounded amount does not exceed your WBA.1Illinois Department of Employment Security. Partial Benefits (Working Part Time)
One boundary to note: the 50% disregard applies only to your base WBA. Dependent allowances for a non-working spouse or dependent children are added to your payment but are not part of the figure used to calculate the earnings reduction.1Illinois Department of Employment Security. Partial Benefits (Working Part Time)
Finding Your Weekly Benefit Amount
Your WBA is set when IDES approves your initial claim and stays fixed through your benefit year. It is calculated from your two highest-earning quarters in the base period (the four completed calendar quarters before you filed): those two quarters are added, multiplied by 47%, and divided by 26.
For claims beginning on or after January 1, 2026, the maximum individual WBA is $628 per week. A non-working spouse allowance can add up to $121, and dependent children can add up to $231, for combined maximums of $748 and $859 respectively.2Illinois Department of Employment Security. Weekly Benefit Amount Table (CLI110L) Your specific WBA appears on the paperwork IDES sent when it approved your claim.
Reporting Part-Time Earnings Correctly
You certify every two weeks online or through Tele-Serve at (312) 338-4337.3Illinois Department of Employment Security. Certify for Benefits For each week in the period, report your total gross wages before any taxes or deductions.
The detail that trips people up: report earnings for the week you did the work, not the week the check clears. If you worked Monday through Friday of the first certification week but were not paid until the following Friday, those wages belong to the first week.4Illinois Department of Employment Security. 10 Things You Should Know
Severance also has to be reported. A lump sum can delay when your benefits start; installment severance is usually reviewed week by week and can reduce your payment for the weeks it overlaps. Report it up front rather than waiting to see whether IDES catches it.
You Still Have to Be Available and Look for Work
Working part-time does not lift the job search rule. You have to actively look for work each week you certify, and you have to be able and available to work each day of your normal work week.5Illinois Department of Employment Security. Benefit Rights Information for Claimants and Employers Days you are unavailable because of illness, family obligations, or transportation problems are days IDES will not pay for.
The bigger risk for part-time claimants is turning down more hours. If your employer offers additional hours or a full-time position and you refuse without good cause, IDES can disqualify you.6Illinois Department of Employment Security. Refusal to Return to Work Whether an offer is “suitable” weighs your skills, prior earnings, commute, and working conditions. A job that pays far below your previous role or raises real safety concerns may be one you can decline. Declining reasonable full-time work to protect a lighter schedule likely will not survive review.
What Happens If You Underreport
Forgetting a shift or two on your certification is the kind of error IDES sees constantly, and it usually surfaces. IDES cross-references new-hire data at the state and federal level, so unreported part-time work almost always catches up with the claim.7Illinois Department of Employment Security. UI Fraud by Individuals
At the mild end, IDES issues an overpayment and requires you to pay back every dollar you should not have received. When the misreporting is knowing rather than accidental, the consequences escalate: penalties and fines, disqualification from future benefits, tax refund interception, and criminal charges. Knowingly obtaining $300 or less in benefits you were not entitled to is a Class 4 felony under Illinois law; more than $300 is a Class 3 felony.9Illinois Department of Employment Security. Your Right to Appeal
Partial Weeks Still Count Against Your 26
Illinois pays up to 26 full weeks of regular benefits within a one-year benefit period.8Illinois Department of Employment Security. Unemployment Insurance Information Weeks in which you draw a partial benefit because of part-time earnings still count toward that limit, but because each payment is smaller, you draw the balance down more slowly. In practical terms, part-time work stretches your total benefit dollars across more calendar weeks, even though the number of certifiable weeks is capped either way.