Key Takeaways
- A denial is not a decision. Only an arbitrator at the Illinois Workers’ Compensation Commission can decide whether benefits are owed. You start that process by filing an Application for Adjustment of Claim, which costs nothing to file, within 3 years of the accident or 2 years after the last payment, whichever is later (820 ILCS 305/6(d)).
- The insurer owes you a written reason. IWCC Rule 9110.70 requires a written explanation within 14 days of learning you cannot work if TTD is denied, and a prompt written explanation for any denial of medical care. After your written demand for benefits, Section 19(l) gives the employer 14 days to explain the delay in writing.
- Cut-off benefits can be heard fast. If medical care or TTD has stopped, a Section 19(b) or 19(b-1) petition puts that dispute in front of an arbitrator ahead of the rest of the case, and the Commission must rule on any review within 180 days.
- Unreasonable denials cost the insurer. Section 19(l) adds $30 for every day benefits are withheld without good and just cause, up to $10,000. Section 19(k) adds 50% of the amount owed for vexatious delay, and Section 16 can shift your attorney’s fees to the employer.
- The burden of proof stays with you. The worker must prove the accident, the job connection, the medical cause and timely notice. Penalties are not automatic, and a genuine dispute over the facts is decided on the evidence, so the records you gather early matter most.
A denial letter from a workers’ compensation insurer can feel like the end of the road. In Illinois it is closer to the opening move. The insurer has decided it does not want to pay, but it does not get the final word: the Illinois Workers’ Compensation Commission does, and the Workers’ Compensation Act gives an injured worker specific tools to get there, including emergency hearings for cut-off benefits and penalties for denials made without a good reason.
This guide explains why claims get denied, what the insurer has to tell you, the steps and deadlines that follow a denial, who pays your medical bills in the meantime, and what an unreasonable denial can cost the employer.
What Happens If Your Workers’ Comp Claim Is Denied in Illinois?
If your workers’ comp claim is denied in Illinois, the employer or its insurer stops or refuses payment, and the dispute moves to the Illinois Workers’ Compensation Commission (IWCC). You file an Application for Adjustment of Claim, an arbitrator is assigned, and the arbitrator decides whether medical care, temporary total disability (TTD) and other benefits are owed. If benefits have been cut off, you can ask for an expedited hearing under Section 19(b) or 19(b-1) instead of waiting for trial. You have 3 years from the accident, or 2 years from the last payment if that is later, to file. If the arbitrator finds the denial was unreasonable, the employer can owe penalties and your attorney’s fees on top of the benefits.
Why Illinois Workers’ Comp Claims Get Denied
The IWCC’s own handbook lists the issues an employee must prove to get benefits, and the burden of proof sits with the employee: “The employer does not need to disprove an employee’s claim.” Nearly every denial attacks one of them.
| What the insurer says | What the worker has to show | Evidence that usually matters |
|---|---|---|
| You told us too late | The employer had notice as soon as practicable, and no later than 45 days after the accident (Section 6(c)) | Texts, emails or a supervisor who heard about it; the date of the first incident report. Notice may be oral or written. |
| It did not happen at work | The accident arose out of and in the course of the employment | Witnesses, job duties, time records, the first medical note describing how it happened |
| Our doctor says it is not work-related | The condition was caused or aggravated by the accident | A causation opinion from your treating doctor; see our guide to the employer’s medical exam (IME) |
| It is a preexisting condition | The work accident aggravated or accelerated the condition | Earlier records showing you were working without restrictions before the accident |
| You were an independent contractor | An employment relationship existed on the date of the accident | Who controlled the work, supplied the tools and set the hours; pay records |
| You filed too late | The Application was filed within 3 years of the accident or 2 years of the last payment (Section 6(d)) | Dates of the accident and of every TTD or medical payment |
Some denials are not a flat “no” but a dispute over part of the claim: whether a particular surgery or round of therapy is reasonable and necessary, how much your average weekly wage was, or whether you are still unable to work. Those disputes go through the same process.
The Insurer Has to Put the Denial in Writing
Illinois does not let an insurer simply go silent. IWCC Rule 9110.70 (50 Ill. Adm. Code 9110.70) sets out what the employer, its insurance carrier or its service company must do:
- Within 14 calendar days after learning you cannot work, it must start paying TTD, give you a written explanation of the basis for denying TTD, or tell you in writing what information it needs to decide and why that information is necessary.
- If it stops TTD before you actually return to work, it must give you a written explanation no later than the date of the last TTD payment.
- If it denies medical care, in whole or in part, or stops paying for care it had accepted, it must promptly give you a written explanation, whatever the reason, including whether the care is necessary or the cost is reasonable.
The rule also says that a failure to follow it without good and just cause “shall be considered” when the arbitrator decides a request for penalties under Section 19(l) or for attorney’s fees under Section 16. Keep every letter, email and explanation of benefits the insurer sends you.
You can also start the clock yourself. Under Section 19(l), once you make a written demand for payment of medical benefits or TTD, the employer has 14 days after receiving it to explain the delay in writing. For medical bills, that 14 days does not start until the 30 days the employer has to pay a bill under Section 8.2(d) have run.
What to Do After a Denial
- Get the reason in writing. If the insurer has not sent a written explanation, ask for one in writing and keep a copy. The stated reason tells you what evidence the case will turn on.
- Send a written demand for the benefits. A short letter or email asking for payment of TTD and named medical bills, with your doctor’s off-work note attached, starts the 14-day window in Section 19(l). The IWCC handbook encourages exactly this.
- File an Application for Adjustment of Claim. The form is the IWCC’s Application for Adjustment of Claim, and there is no filing fee. The Commission assigns a case number and an arbitrator. In Cook County, cases are assigned at random among the Chicago arbitrators; elsewhere, to the hearing site closest to where the accident happened.
- Ask for an expedited hearing if benefits stopped. If you are off work without TTD, or treatment is on hold, a 19(b) or 19(b-1) petition is the fastest route to a ruling. Both are explained below.
- Keep treating, and get your doctor’s opinion on cause. A gap in treatment is one of the first things an insurer points to. Ask your treating doctor to put in writing whether the work accident caused or aggravated the condition and what your work restrictions are.
- Use your health insurance for now. Your group health plan can pay while the claim is disputed, and the law protects you from being billed twice. See the medical bills section below.
- Track the case yourself. The IWCC handbook warns that each arbitrator is responsible for thousands of cases and “has no information as to whether benefits are or are not being paid.” Cases are set for a status call every three months, and for the first three years it is up to the parties to move the case along.
Deadlines After a Denial
| Step | Deadline | Source |
|---|---|---|
| Tell the employer about the accident | As soon as practicable, no later than 45 days after the accident | 820 ILCS 305/6(c) |
| Employer pays TTD, explains the denial or asks for information in writing | Within 14 calendar days of learning you cannot work | 50 Ill. Adm. Code 9110.70(a) |
| Employer explains in writing after your written demand | 14 days after it receives the demand | 820 ILCS 305/19(l) |
| File the Application for Adjustment of Claim | 3 years after the accident, or 2 years after the last payment, whichever is later | 820 ILCS 305/6(d) |
| Serve a 19(b-1) emergency petition before filing it | At least 15 days before filing | 820 ILCS 305/19(b-1) |
| Employer’s written response to a 19(b-1) petition | 15 days after it receives notice of the filing | 820 ILCS 305/19(b-1) |
| Petition for review of the arbitrator’s decision | 30 days after you receive it; transcript or agreed facts within 35 days | 820 ILCS 305/19(b) |
| Circuit court review of the Commission’s decision | 20 days after you receive notice of it | 820 ILCS 305/19(f)(1) |
Two of these are easy to underestimate. The 45-day notice rule is the most common reason a late-reported claim is denied, so if you told anyone at work about the injury, write down who and when. And the filing deadline runs whether or not the insurer is still “reviewing” the claim; voluntary payments do not waive the employer’s right to dispute the claim, and accepting them does not waive yours.
Emergency Hearings: 19(b) and 19(b-1)
Most workers’ comp cases cannot go to trial until the worker reaches maximum medical improvement, and the IWCC handbook notes it is “not uncommon for one to two years” to pass after filing before a case is ready for trial. When the denial means no paycheck and no treatment, waiting that long is not realistic. The Act offers two faster routes.
The 19(b) expedited hearing
If the employer is not paying for medical care or TTD, Section 19(b) lets you “at any time petition for an expedited hearing by an Arbitrator” on whether you are entitled to those benefits. Expedited hearings “have priority over all other petitions.” The Commission must adopt rules under which its final decision on review is filed no later than 180 days after the petition for review. One limit: neither side gets an expedited hearing if you have returned to work and the only dispute is less than 12 weeks of unpaid TTD.
The 19(b-1) emergency petition
Section 19(b-1) is for workers who are receiving neither medical care nor TTD. It is faster and stricter. The petition must include the accident details, the treating providers, a signed medical authorization, a doctor’s report on your current inability to work, and copies of the records you will rely on, and it must be served on the employer at least 15 days before it is filed. The employer then has 15 days to file a written response giving “the legal and factual basis for each disputed allegation.” An employer that does not respond on time without good cause “may not introduce any evidence to dispute any claim of the employee.” The Commission’s final decision must be filed within 90 days of a petition for review and no later than 180 days after the emergency petition was filed. A 19(b-1) hearing cannot award permanent disability; that is decided later.
Both routes decide only the benefits in dispute right now. Afterward, the case goes back on the arbitration call for the remaining issues, such as the degree of permanent disability.
Who Pays Your Medical Bills While the Claim Is Denied
This is often the most urgent question, and the Act answers it in two places.
Your group health insurance can pay. Under Section 8(j), if a group plan your employer contributes to pays for treatment that workers’ comp should have covered, the employer gets a credit for those payments if the claim is later found compensable, and it must keep you “safe and harmless” from claims arising from those payments to the extent of that credit. Under Section 8.2(e), if you are covered by a group health plan, your share is limited to the plan’s deductibles, co-payments and co-insurance.
Providers must stop collecting once you file. Section 8.2(e-5) lets a provider bill you if the employer tells it the injury is not compensable. But “once an employee informs the provider that there is an application filed with the Commission” to resolve the dispute, the provider “shall cease any and all efforts to collect payment” for the disputed services. While the case is pending, the provider may send reminders, which must say they are not bills and may not be reported to a credit agency, and may ask for your case number and status. Answer those requests: under Section 8.2(e-15), if you do not respond within 90 days of the reminder, the provider can resume collection.
If you win, the employer pays the medical bills under the Illinois fee schedule. For how liens and repayment work when a separate injury claim against someone other than your employer is also involved, see our guide to medical liens on Illinois settlements.
Penalties and Fees for an Unreasonable Denial
The Act separates an honest dispute from a stall. When the employer or its insurer withholds benefits “without good and just cause,” three remedies are available:
- Section 19(l): $30 a day. For each day medical benefits under Section 8(a) or TTD under Section 8(b) are withheld or unreasonably delayed without good and just cause, the arbitrator or the Commission “shall allow” $30 in additional compensation, up to $10,000. “A delay in payment of 14 days or more shall create a rebuttable presumption of unreasonable delay.”
- Section 19(k): 50% more. For “unreasonable or vexatious delay of payment or intentional underpayment,” or defenses that are “merely frivolous or for delay,” the Commission may add 50% of the amount payable at the time of the award. Failure to pay TTD as Section 8(b) requires “shall be considered unreasonable delay.”
- Section 16: your attorney’s fees. When the employer or insurer is guilty of that kind of delay, intentional underpayment or frivolous defense, the Commission “may assess all or any part of the attorney’s fees and costs against such employer and his or her insurance carrier.”
These are not automatic. When it applies Section 19(k), the Commission considers whether an arbitrator has found the claim not compensable and whether the employer paid through a group plan under Section 8(j). The question in each section is whether the employer had a real reason: “good and just cause” in 19(l), a “real controversy” in 19(k). A denial resting on a genuine dispute over the facts is decided on the evidence. An insurer that ignores your doctor’s off-work note, never explains its denial, or stops TTD with no new evidence is in a different position.
Can You Be Fired for Fighting the Denial?
No. Section 4(h) makes it unlawful for an employer, its insurer or its claims company to “interfere with, restrain or coerce an employee” in exercising rights under the Act, or to discharge, threaten to discharge, or refuse to rehire an employee for doing so. Filing an Application for Adjustment of Claim is exercising those rights. For more, see whether you can lose your job for filing a workers’ comp claim in Illinois.
Do You Need a Lawyer for a Denied Claim?
You do not have to have one: the IWCC accepts claims from workers who represent themselves, and there is no fee to file. But the handbook notes that in disputed cases “most employees and employers do hire attorneys,” and a denied claim is by definition disputed. The insurer will have a lawyer at every hearing.
Illinois limits what a workers’ comp lawyer can charge. Under Section 16a, fees are set by a written contract on a Commission form and cannot exceed 20% of the compensation recovered unless the Commission allows more after a hearing. In death, total disability and partial disability cases, the fee is also capped at 20% of what 364 weeks of permanent total disability benefits would pay. If you are back at work in a different role while the claim is disputed, our guide to light duty and what you get paid explains how partial benefits work, and our Illinois workers’ comp settlement chart shows how permanent disability is valued once the dispute is resolved. For a starting estimate of what your claim could be worth, try the calculator below.
Frequently Asked Questions
What happens if my workers’ comp claim is denied in Illinois?
A denial means the employer or its insurer has decided not to pay, but it is not a ruling. You can file an Application for Adjustment of Claim with the Illinois Workers’ Compensation Commission, and an arbitrator will decide whether benefits are owed. There is no filing fee. If medical care or temporary total disability (TTD) payments have been cut off, you can ask for an expedited hearing under Section 19(b) or 19(b-1) of the Workers’ Compensation Act.
How long do I have to fight a denied workers’ comp claim in Illinois?
The Application for Adjustment of Claim must be filed within 3 years after the accident if no compensation has been paid, or within 2 years after the last payment of compensation, whichever is later (820 ILCS 305/6(d)). Separately, the employer must have been told about the accident within 45 days (820 ILCS 305/6(c)). Some occupational disease and exposure cases have different limits.
Does the insurance company have to tell me why my claim was denied?
Yes. Under IWCC Rule 9110.70, within 14 calendar days after learning you cannot work, the employer must start paying TTD, give you a written explanation of why it is denying TTD, or tell you in writing what information it still needs and why. It must also promptly explain in writing any denial of medical care, and give a written explanation no later than the date of the last TTD payment if it stops TTD before you return to work.
What are the most common reasons workers’ comp claims are denied?
Most denials challenge one of the things the worker has to prove: that an employment relationship existed, that the accident arose out of and in the course of the job, that the medical condition was caused or aggravated by it, and that the employer got notice in time. In practice that often looks like late notice, an insurer doctor’s opinion that the injury is not work-related, a claim that the worker was an independent contractor, or a preexisting condition.
Who pays my medical bills if workers’ comp denies my claim?
Your group health plan can pay, and if the claim is later found compensable, the employer gets a credit for those payments and must hold you harmless to that extent (820 ILCS 305/8(j)). If the employer tells a provider the injury is not compensable, the provider may bill you, but once you tell the provider an application is on file at the Commission, it must stop all collection efforts on the disputed bills (820 ILCS 305/8.2(e-5)). Answer the provider’s requests for your case number within 90 days, or collection can resume.
What is a 19(b) hearing?
A 19(b) hearing is an expedited hearing before an arbitrator on whether you are owed medical care or TTD right now, ahead of the rest of the case. It is not available if you have returned to work and the only dispute is less than 12 weeks of unpaid TTD. A 19(b-1) petition is a stricter emergency version for workers receiving neither medical care nor TTD: it must be served on the employer 15 days before filing, and an employer that does not file a timely written response without good cause cannot introduce evidence to dispute the claim.
Can I get penalties if my workers’ comp benefits were wrongly denied?
Yes, if the denial or delay was without good and just cause. Section 19(l) adds $30 per day that medical benefits or TTD were withheld, up to $10,000, and a delay of 14 days or more is presumed unreasonable. Section 19(k) adds 50% of the amount payable for unreasonable or vexatious delay or intentional underpayment, and Section 16 lets the Commission charge your attorney’s fees and costs to the employer. Penalties turn on whether the employer had a real reason; a genuine dispute over the facts is decided on the evidence rather than penalized.
How do I appeal an arbitrator’s decision on a workers’ comp claim in Illinois?
File a petition for review with the Commission within 30 days after you receive the arbitrator’s decision, and file the transcript or an agreed statement of facts within 35 days (820 ILCS 305/19(b)). If the Commission rules against you, review in the circuit court must be started within 20 days of receiving notice of the Commission’s decision (820 ILCS 305/19(f)(1)). Miss either deadline and the decision becomes final.
Can I be fired for fighting a workers’ comp denial?
No. Section 4(h) of the Workers’ Compensation Act makes it unlawful for an employer or its insurer to interfere with, coerce or discriminate against an employee for exercising rights under the Act, or to discharge, threaten to discharge, or refuse to rehire an employee because of it. Filing an Application for Adjustment of Claim after a denial is exercising those rights.
How much does a workers’ comp lawyer cost for a denied claim in Illinois?
Illinois caps workers’ compensation attorney fees at 20% of the compensation recovered, set by a written contract on a Commission form, unless the Commission allows more after a hearing (820 ILCS 305/16a). In death, total disability and partial disability cases, the fee is also limited to 20% of 364 weeks of permanent total disability benefits. There is no fee to file a claim at the Commission.
Was Your Workers’ Comp Claim Denied?
A denial is the insurer’s position, and the Workers’ Compensation Act gives you a way to test it. Our Chicago workers’ compensation lawyers and Illinois workers’ compensation team handle denied and disputed claims at hearing sites across the state, including in Rockford, Champaign, Springfield, Peoria, Decatur, Joliet, Aurora, Naperville, Elgin, Waukegan, Cicero and Elmhurst.
Workers' Comp Claim Denied?
We will file your claim with the Commission, push for an emergency hearing if your checks or treatment stopped, and seek penalties for an unreasonable denial.
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Sources
- Illinois Workers’ Compensation Act, 820 ILCS 305: Sections 4(h) (retaliation), 6(c) and 6(d) (notice and filing deadlines), 8(a), 8(b) and 8(j) (medical benefits, TTD and group plan credits), 8.2(d), (e), (e-5) and (e-15) (payment of bills and collection from employees), 16 (attorney’s fees for unreasonable delay), 16a (attorney fee limits) and 19(b), 19(b-1), 19(f), 19(k) and 19(l) (hearings, review and penalties).
- Illinois Workers’ Compensation Commission rules, 50 Ill. Adm. Code 9110.70 (written explanation of non-payment, termination or denial).
- Illinois Workers’ Compensation Commission, Handbook on Workers’ Compensation and Occupational Diseases and Application for Adjustment of Claim (IC-01).
This article is general information about Illinois law, not legal advice, and reading it does not create an attorney-client relationship. Workers’ compensation deadlines and benefits depend on the facts of each case, and the Commission and the courts have interpreted many of these sections in ways this summary does not cover. Please speak with a lawyer about your own situation as soon as possible.
