If you were hurt on the job in Illinois, the law gives you the right to medical care and, in most cases, partial wage replacement while you recover — paid for by your employer or its workers' compensation insurance. Benefits are generally paid regardless of who was at fault. But two clocks start running the moment you're hurt, and missing either one can cost you your claim. Here's what to do first, and what the process looks like from there.
The two deadlines to know right now
Tell your employer within 45 days. Under the Illinois Workers' Compensation Act, notice of the accident must be given to your employer as soon as practicable, but no later than 45 days after the accident (820 ILCS 305/6(c)).
File your claim with the state within 3 years. In most cases you must file an Application for Adjustment of Claim with the Illinois Workers' Compensation Commission within 3 years after the date of the accident if no compensation has been paid, or within 2 years after the date of the last payment of compensation, whichever is later (820 ILCS 305/6(d)).
Telling your employer is not the same as filing a claim with the state. They are two separate steps with two separate deadlines.
Two important qualifiers, before you conclude you are too late. First, if you have an occupational disease rather than a sudden accident, the clocks run from disablement, not from the date you were exposed — see below. Second, the Act contains a tolling rule for legal disability: "In case of the legal disability of the employee or any dependent of a deceased employee who may be entitled to compensation under the provisions of this Act, the limitations of time by this Act provided do not begin to run against such person under legal disability until a guardian has been appointed" (820 ILCS 305/6(c)). That applies to the Act's time limits generally — the 45-day notice period as well as the filing period. So a worker who is legally incapacitated, a minor, or a dependent of a worker who died may not be on the clock you think they are. If any of that could describe your situation, ask the Commission or a lawyer before you give up on a claim.
What to do first
Get medical care. If it's an emergency, go to the emergency room or call 911. Tell whoever treats you that the injury happened at work — the Commission's own handbook advises this, because it tells the provider your employer is responsible for the bill.
Report the injury to your employer. Illinois law says notice may be given orally or in writing, and it should give the approximate date and place of the accident, if known. Putting it in writing anyway is the safer route, because it creates a record.
Don't wait to see how the injury develops. The 45-day clock runs from the accident. Report it even if the injury seems minor. (The Act does say a defect or inaccuracy in your notice is not, by itself, a bar unless the employer proves it was unduly prejudiced — but that protects an imperfect notice, not a late one. The separate legal-disability tolling rule above is the main statutory excuse for a late one.)
Keep records. Note who you told and when, save your medical paperwork, and write down how the injury happened while it's fresh.
Special notice rules exist for a few situations: for injuries from radiological exposure, notice is due within 90 days after you know or suspect you received an excessive dose of radiation. For occupational diseases, notice is due to the employer as soon as practicable after the date of the disablement — there is no 45-day cap in that statute (820 ILCS 310/6), and the handbook puts it as "as soon as practicable after he or she becomes aware of the condition."
Occupational disease: the clock runs from disablement, not exposure
If your claim is for a disease caused by the work — not a single accident — the deadlines in the Workers' Occupational Diseases Act (820 ILCS 310/6) work differently, and the difference matters enormously for latent conditions:
Filing: within 3 years after the date of the disablement, or within 2 years after the date of the last payment of compensation, whichever is later. The trigger is the disablement — the point at which the disease actually disables you — not the date you were exposed. The Commission's handbook says the same thing, describing the clock as running from "an injury, death, or disablement from an occupational disease."
Coal workers' pneumoconiosis: a longer window — 5 years after the employee was last exposed (or 5 years after the last payment of compensation).
Asbestos or radiological exposure: an application may be filed within 25 years after the employee was last exposed (820 ILCS 310/6; see also 820 ILCS 305/6(d)). Death cases involving those exposures have their own rule.
So if you were exposed years or decades ago and only recently became disabled or were diagnosed, do not assume "three years from the accident" has run out on you. Confirm your dates with the Commission before you decide you are barred.
Illinois's workers' compensation agency
Claims in Illinois are handled by the Illinois Workers' Compensation Commission (IWCC), at iwcc.illinois.gov. The Commission describes itself as the state agency that administers the judicial process resolving disputed claims between employees and employers — essentially an administrative court system for workers' comp. Because it must stay impartial, its staff can explain procedures and the basic provisions of the law, but cannot give you legal advice or act as an advocate for either side.
Contact numbers listed by the Commission include a main line at 312-814-6500, Springfield at 217-785-7087, and Collinsville at 618-346-3484. The Commission's free Handbook on Workers' Compensation and Occupational Diseases is the best plain-language starting point.
Who is covered in Illinois
Coverage is broad. The Commission's insurance page states it plainly: "If you have one employee, even a part-time employee, you must obtain workers' compensation insurance." Most employees who are hired in Illinois, injured in Illinois, or whose employment is localized in Illinois are covered, and they are covered from the moment they begin the job.
Illinois is not a monopolistic state-fund state. There is no state insurance fund: employers either buy coverage from a private insurer or get the Commission's approval to self-insure.
A narrow group of business owners — sole proprietors, business partners, corporate officers, and members of limited liability companies — may elect not to cover themselves; their employees still must be covered. The Commission notes this individual exemption does not extend to employers in extra-hazardous occupations, such as construction. If you're an ordinary employee, none of these owner opt-outs apply to you.
If you believe your employer has no coverage, do not assume you're out of options. The Commission's Insurance Compliance Division takes those reports (its handbook lists inscompquestions.wcc@illinois.gov and toll-free 866-352-3033), penalties for uninsured employers can be severe, and an employer that was uninsured loses the Act's protections for that period — which can leave an injured worker free to sue in civil court instead.
Medical care: who picks your doctor
This is one of the most misunderstood parts of the process, and Illinois's rule is comparatively worker-friendly: you generally choose your own treating provider. Under Section 8(a) of the Act, the employer must pay for first aid and emergency treatment, plus care from the provider you initially chose and anyone in that provider's chain of referrals, plus care from a second provider you choose and that provider's chain of referrals. In short: two choices, each with its referral chain. Referrals do not use up a choice. Beyond that, the employer selects and pays for further treatment unless it agrees to another selection by you.
If your employer has an approved Preferred Provider Program (PPP), it must tell you so in writing on a Commission form, and your two choices come from inside that network. You may decline the PPP in writing at any time after reporting the injury — but note that declining counts as one of your two choices. First aid and emergency care do not count against your two choices.
One point where the official sources disagree — treatment you got before you reported the injury. The statute says that "[p]rior to the report of an injury by an employee, when an employee chooses non-emergency treatment from a provider not within the preferred provider program, that would constitute the employee's one choice of medical providers" (820 ILCS 305/8(a)). The Commission's own handbook says the opposite in plain terms: "Nonemergency care obtained before the employee reports the injury to the employer does not count as one of the two choices." Because the agency's guidance and the statutory text point different ways, treat this as unsettled rather than assuming you have burned a choice. If someone tells you that a doctor you saw before reporting used up one of your two picks, ask the Commission — and get advice before you let that assumption limit your care.
Your employer may also send you to a doctor of its choosing for an examination, and must pay travel, meals, and lost wages for it. That exam does not replace your right to choose your own treating provider.
Wage-replacement benefits
If your injury keeps you off work, Illinois pays temporary total disability (TTD) equal to two-thirds (66 2/3%) of your average weekly wage, subject to statutory minimum and maximum limits.
There is a short waiting period. Under Section 8(b), if the period of temporary total incapacity lasts more than 3 working days, compensation is paid beginning on the 4th day. And if the incapacity continues for 14 days or more from the day of the accident, compensation instead commences on the day after the accident — so a longer recovery does not cost you those first days.
The minimum and maximum weekly rates change twice a year: the Commission posts updated benefit rates by January 15 and July 15, tracking the statewide average weekly wage. Because those figures go stale fast, don't rely on a dollar amount you find on a website — use the IWCC's own benefit rates tables for the period matching your injury date, or call the Commission.
Illinois also provides temporary partial disability (TPD) if you're healing and working light duty for less than you earned before, and maintenance benefits while you participate in an approved vocational rehabilitation program.
Permanent disability
If an injury leaves lasting impairment once you've reached maximum medical improvement, Illinois compensates it in several ways:
Scheduled injuries — the Act assigns a number of weeks of compensation to specific body parts (hand, arm, leg, eye, and so on).
Non-scheduled, "person as a whole" injuries — for conditions not on the schedule, disability is rated as a percentage of the person as a whole.
Wage differential — if the injury forces you into lower-paying work, the benefit is two-thirds of the difference between what you would be earning in the old job and what you earn now. For injuries on or after September 1, 2011, these are paid for five years after the award becomes final or until you reach age 67, whichever is later.
Disfigurement — serious and permanent disfigurement to certain areas (head, face, neck, chest above the armpits, arm, hand, or leg below the knee) is compensable, though not for the same body part as a loss-of-use award.
Permanent total disability (PTD) — two-thirds of the average weekly wage for life, subject to the statutory limits, with cost-of-living adjustments after an arbitrator's award becomes final.
Which category applies, and how it is calculated, depends heavily on the facts. For injuries on or after September 1, 2011, the Commission weighs five factors, including an AMA impairment report, your occupation, your age, your future earning capacity, and evidence of disability in the treating records — and no single factor controls.
If your claim is denied
Another deadline to flag. If your employer or its insurer disputes the claim or stops paying, an arbitrator assigned by the Commission holds a trial and issues a written decision.
Appealing the arbitrator: either side may file a Petition for Review within 30 days after receiving the decision (and must file an agreed statement of facts or a transcript within 35 days). Otherwise the arbitrator's decision becomes the decision of the Commission. Review is by a panel of three commissioners, who consider the record; in general, no new evidence is taken on review.
Appealing the Commission: a proceeding for review in the circuit court must be commenced within 20 days of receipt of notice of the Commission's decision (820 ILCS 305/19(f)(1)), and there are additional steps, including a bond requirement for a party ordered to pay money. From there, appeals run to the Appellate Court and, in some cases, the Illinois Supreme Court. Note that for most claims against the State of Illinois itself, the Commission's decision is not subject to judicial review.
Faster tracks exist. Sections 19(b) and 19(b-1) allow expedited or emergency hearings when medical care or TTD is not being paid, with the Commission's final decision due within set time limits.
If the employer refuses to pay an award, the Act provides remedies including a circuit-court judgment under Section 19(g) and petitions for penalties and attorney's fees under Sections 16, 19(k), and 19(l).
Most cases actually end in a settlement contract, which must be approved by the Commission to be binding. Read one carefully before signing: an approved settlement generally closes out your right to future cash and medical benefits, even if your condition later worsens, unless the contract says otherwise.
Getting help — including for free
You do not need a lawyer to file a claim. Commission staff will explain procedures and case status, though they cannot advise you or advocate for you. If you are self-represented ("pro se"), note that the Commission requires attorneys and pro se litigants to file cases and documents electronically through CompFile; its Resources for Pro Se page has guides and a support address (wcc.compfile@illinois.gov). Filing a claim is free — there is no filing fee.
If a lawyer does represent you, Illinois law limits the claimant's attorney fee to 20% of compensation recovered (with a statutory ceiling tied to weeks of the maximum TTD benefit), no fee may be charged on benefits the employer paid voluntarily, timely, and properly, and the fee must be approved by the Commission. If your case involves a denied claim, a fight over which doctor you may see, or a permanent disability rating, consulting a licensed Illinois attorney is worth considering.
Frequently asked questions
Do I have to use the doctor my employer sends me to in Illinois?
Generally no. Illinois lets you choose your own treating provider — two choices, each including that provider's chain of referrals. If your employer has an approved Preferred Provider Program, your choices come from that network, and declining the PPP in writing uses up one of your two choices. Your employer may separately require an exam by its own doctor.
Does a doctor I saw before I reported the injury use up one of my two choices?
The official sources conflict. The statute says non-emergency treatment from a provider outside the preferred provider program, obtained before you report the injury, counts as one choice (820 ILCS 305/8(a)); the Commission's handbook says "[n]onemergency care obtained before the employee reports the injury to the employer does not count as one of the two choices." Don't assume you've lost a choice — ask the Commission, or a lawyer, before you limit your own treatment.
What if I miss the 45-day notice deadline?
The Act requires notice as soon as practicable and no later than 45 days after the accident, and failing to give notice in time can defeat a claim. Two things soften that. A notice that is merely defective or inaccurate is not a bar unless the employer proves it was unduly prejudiced. And under 820 ILCS 305/6(c), the Act's time limits do not begin to run against a person under a legal disability (for example, an incapacitated worker, a minor, or a dependent of a deceased worker) until a guardian is appointed. Occupational-disease notice runs from disablement instead. Report the injury immediately anyway and contact the IWCC or a lawyer about your options.
How long do I have to actually file my claim with the state?
For an accident: 3 years from the date of the accident if no compensation has been paid, or 2 years from the last payment of compensation, whichever is later. For an occupational disease, the 3 years runs from the date of disablement, not from your exposure — and asbestos or radiological exposure claims may be filed within 25 years after you were last exposed, with coal workers' pneumoconiosis at 5 years after last exposure (820 ILCS 310/6). Death cases have their own rules. If a legal disability is involved, the clock may not have started at all. Confirm your dates with the Commission.
Will I be paid for the days I missed while waiting for benefits to start?
TTD begins on the 4th day when the incapacity lasts more than 3 working days. If the incapacity continues 14 days or more from the day of the accident, compensation commences on the day after the accident.
What happens if my employer doesn't have workers' comp insurance?
Illinois requires an employer with even one employee, including a part-time employee, to carry coverage. Report a suspected uninsured employer to the Commission's Insurance Compliance Division — penalties are significant, and an uninsured employer loses the Act's protections for the period it lacked coverage.
How much can a workers' comp lawyer charge in Illinois?
The claimant's attorney fee is limited to 20% of the compensation recovered, subject to a statutory ceiling, with no fee on benefits the employer paid voluntarily and on time, and the fee must be approved by the Commission.
This article is general legal information about Illinois law, not legal advice for your specific situation. Verify anything that affects a deadline with the Illinois Workers' Compensation Commission or a licensed Illinois attorney.
Frequently asked questions
Do I have to use the doctor my employer sends me to in Illinois?
Generally no. Illinois lets you choose your own treating provider — two choices, each including that provider's chain of referrals. If your employer has an approved Preferred Provider Program, your choices come from that network, and declining the PPP in writing uses up one of your two choices. Your employer may separately require an exam by its own doctor.
Does a doctor I saw before I reported the injury use up one of my two choices?
The official sources conflict. The statute says non-emergency treatment from a provider outside the preferred provider program, obtained before you report the injury, counts as one choice (820 ILCS 305/8(a)); the Commission's handbook says nonemergency care obtained before the employee reports the injury to the employer does not count as one of the two choices. Don't assume you've lost a choice — ask the Commission, or a lawyer, before you limit your own treatment.
What if I miss the 45-day notice deadline?
The Act requires notice as soon as practicable and no later than 45 days after the accident, and failing to give notice in time can defeat a claim. Two things soften that. A notice that is merely defective or inaccurate is not a bar unless the employer proves it was unduly prejudiced. And under 820 ILCS 305/6(c), the Act's time limits do not begin to run against a person under a legal disability — for example an incapacitated worker, a minor, or a dependent of a deceased worker — until a guardian is appointed. Occupational-disease notice runs from disablement instead. Report the injury immediately anyway and contact the IWCC or a lawyer about your options.
How long do I have to actually file my claim with the state?
For an accident: 3 years from the date of the accident if no compensation has been paid, or 2 years from the last payment of compensation, whichever is later. For an occupational disease, the 3 years runs from the date of disablement, not from your exposure — and asbestos or radiological exposure claims may be filed within 25 years after you were last exposed, with coal workers' pneumoconiosis at 5 years after last exposure (820 ILCS 310/6). Death cases have their own rules. If a legal disability is involved, the clock may not have started at all. Confirm your dates with the Commission.
Will I be paid for the days I missed while waiting for benefits to start?
TTD begins on the 4th day when the incapacity lasts more than 3 working days. If the incapacity continues 14 days or more from the day of the accident, compensation commences on the day after the accident.
What happens if my employer doesn't have workers' comp insurance?
Illinois requires an employer with even one employee, including a part-time employee, to carry coverage. Report a suspected uninsured employer to the Commission's Insurance Compliance Division — penalties are significant, and an uninsured employer loses the Act's protections for the period it lacked coverage.
How much can a workers' comp lawyer charge in Illinois?
The claimant's attorney fee is limited to 20% of the compensation recovered, subject to a statutory ceiling, with no fee on benefits the employer paid voluntarily and on time, and the fee must be approved by the Commission.
This article is general legal information, not legal advice, and may not reflect the most current law or the law in your jurisdiction. Laws vary by state and change over time. For advice about your specific situation, consult a licensed attorney.
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