If you've searched "certify IDES number," you're likely trying to complete your weekly certification with the Illinois Department of Employment Security (IDES) — or figure out what the certification process involves and what your claimant ID number has to do with it. Here's how that process works.
IDES is Illinois's state agency that administers unemployment insurance (UI) benefits. Like all state UI programs, IDES operates within a federal framework — the U.S. Department of Labor sets broad requirements, but each state runs its own system, sets its own benefit amounts, and establishes its own procedures for filing and certifying claims.
Unemployment insurance is funded through employer payroll taxes, not employee contributions. Eligible claimants receive weekly benefits based on their prior earnings history, subject to Illinois's maximum weekly benefit amount and duration rules.
When you file an initial unemployment claim with IDES, the system assigns you a claimant ID number — sometimes referred to as your IDES number. This number identifies your account within the IDES system and is used to:
Your claimant ID is distinct from your Social Security number, though IDES uses both to verify your identity when you first establish your account. Once your account is set up, the claimant ID is typically what you use for ongoing access.
📋 If you can't locate your claimant ID, it's usually included in any written correspondence IDES sent after you filed your initial claim.
Weekly certification is the recurring process by which claimants confirm their continued eligibility to receive benefits for a given week. Filing an initial claim does not automatically generate ongoing payments — you must certify each week to receive benefits for that week.
During certification, IDES typically asks claimants to confirm:
Earnings reporting matters. If you worked part-time during a certification week, most states — including Illinois — allow you to collect partial benefits, but your weekly benefit amount is reduced based on what you earned. Misreporting earnings is considered fraud and can result in overpayment demands, penalties, and disqualification.
IDES assigns claimants a certification schedule based on their Social Security number. You're typically required to certify for two-week periods through the IDES online portal or by phone.
| Method | How It Works |
|---|---|
| Online (IDES portal) | Log in with your ILogin credentials, enter your claimant ID, and answer certification questions |
| Phone (Tele-Serve) | Call the IDES automated phone system and respond to prompts using your claimant ID and PIN |
Missing your certification window can delay or interrupt your payments. IDES does not automatically pay benefits for uncertified weeks, and certifying late — or missing a week entirely — can create gaps in your payment history that require additional follow-up.
Illinois requires most claimants to actively search for work as a condition of receiving benefits. During weekly certification, you'll be asked to confirm your work search activity. IDES requires claimants to keep records of their job search contacts — typically including the employer name, method of contact, date, and type of work sought.
🔍 Work search requirements vary by claimant circumstances. Some claimants are temporarily exempt — for example, if they're union members expecting recall or are part of a shared-work program. Whether a specific exemption applies depends on how your claim was established and what IDES determined at the time of your initial filing.
Not every certification week is straightforward. Certain answers during certification can trigger adjudication — a review process where IDES evaluates whether you remain eligible for that week. Common triggers include:
If your certification triggers an issue, IDES may contact you for more information or issue a determination on your continued eligibility. If that determination is unfavorable, Illinois has an appeals process — claimants have a set number of days to request a hearing before an administrative law judge.
How your weekly certifications affect your payments depends on several factors that vary from one claimant to the next:
Illinois's benefit rules, certification schedules, and eligibility determinations apply differently depending on your work history, your separation circumstances, and how your claim was originally adjudicated. The IDES portal and any correspondence you've received from the agency reflect the specifics of your claim — those are the authoritative source for where your claim stands.