If you're receiving unemployment benefits in Illinois, filing your initial claim is only the first step. To keep benefits coming, you have to regularly certify — a process where you confirm your ongoing eligibility for each week you're claiming. Missing or incorrectly completing this step is one of the most common reasons payments stop.
Certification (sometimes called a weekly or biweekly claim) is how the Illinois Department of Employment Security (IDES) verifies that you remain eligible to receive benefits during each benefit period. Rather than paying out your full benefit amount automatically after approval, IDES requires claimants to actively confirm their status on a recurring basis.
This process exists because eligibility isn't static. Your work situation, availability, income, and job search activity can change week to week — and the certification questions are designed to capture those changes.
Illinois uses a biweekly certification schedule, meaning you certify once every two weeks for the two-week period that just passed. IDES assigns claimants a designated certification day based on their Social Security number. Certifying on or after your assigned day is important — certifying late can delay or interrupt payment.
Each biweekly certification covers two individual weeks. You'll answer questions about each of those weeks separately, even though you submit them together.
Illinois offers two main certification methods:
Most claimants use the online system. You'll log in with credentials created when you filed your initial claim. The Tele-Serve option follows the same question structure but uses an automated phone menu.
IDES does not currently offer in-person certification as a standard process.
When you certify, you'll be asked a standard set of questions for each week in the period. The questions are designed to determine whether you remained eligible during those specific weeks. Common topics include:
| Question Area | What It's Assessing |
|---|---|
| Work and earnings | Whether you worked and how much you earned |
| Availability to work | Whether you were able and available for full-time work |
| Job search activity | Whether you completed required work search contacts |
| Refusal of work | Whether you turned down any job offers or referrals |
| School or training enrollment | Whether you were attending school or a training program |
| Health or physical ability | Whether any condition limited your ability to work |
Your answers to these questions directly affect whether you're paid for each week — and how much.
If you worked and earned wages during a certification week, you're still required to report that income. Illinois uses a formula to determine how partial earnings affect your weekly benefit amount. Earning wages during a week doesn't automatically disqualify you, but it will reduce what you're paid for that week.
Underreporting earnings is treated as fraud. IDES cross-checks reported wages with employer payroll records. If a discrepancy is found, you may be required to repay benefits and could face additional penalties.
Illinois requires claimants to actively search for work as a condition of receiving benefits. During each certification period, you'll need to confirm that you completed the required number of work search activities — which typically includes applying for jobs, attending job fairs, or completing other IDES-approved activities.
The specific number of required contacts per week can change based on IDES policy and labor market conditions. IDES may ask you to provide documentation of your work search efforts at any time, so keeping records of where and when you applied is important.
Claimants enrolled in approved training programs may have modified or waived work search requirements, depending on the specifics of their situation.
Failing to certify by the deadline for a given period can result in losing benefits for those weeks entirely. Illinois generally does not allow retroactive payment for weeks that were not certified on time, though there are some exceptions depending on the reason for the delay.
If you miss your certification window, contact IDES directly to understand your options for that period.
Illinois observes a waiting week — the first eligible week of a claim is served but not paid. You still need to certify for that week; it simply won't result in a payment. This is a standard feature of most state unemployment programs and is built into the benefit year structure.
Certain answers on your certification can flag your claim for adjudication — a review process where IDES investigates before releasing payment. Common triggers include:
If your claim enters adjudication, payment for those weeks will be held until the review is complete. You may be contacted for additional information.
The certification process in Illinois follows a consistent structure, but individual outcomes vary based on several factors: your work history during the benefit year, how much you earn in any given week, whether your original separation reason has been fully adjudicated, and whether IDES flags any weeks for additional review.
The answers you provide each certification period carry real weight — they determine whether you're paid, how much you receive, and whether your claim remains in good standing.