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Workers' Comp Claim Denied: How to Read the Notice, Appeal It, and Prove the Claim

A denial letter is written to sound final. It is not. A workers’ compensation act builds in a contest procedure, and the insurer’s decision is an opening position that a judge who never saw the letter can review. What the letter does control is time: it names a reason you now have to answer, and somewhere behind it a deadline is already running. This guide covers the reasons claims are denied, what the notice has to say, the four stages an appeal moves through, the evidence that carries the burden, and the dates that end a claim before anyone reads the medical file.

Quick answer

A denied workers’ comp claim is contested through your state’s own review procedure, and the notice starts a clock that is short and enforced strictly. The usual path runs through an informal conference or mediation, then a hearing before an administrative law judge or an arbitrator, then written review inside the state agency, then the courts. The deadlines are state law and they differ sharply: Texas allows 15 days to appeal a hearing decision, counting no weekends or state holidays, New York and Illinois allow 30 days, and California allows 20 days to petition for reconsideration. Read the notice for the exact reason and the exact date, gather the medical and wage records that answer that reason, and file before the date passes.

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By the CaseValue.law Editorial TeamLast updated and source-checked September 14, 2026How we estimate

Why workers’ comp claims get denied

Denials are not improvised. Insurers contest a short list of things, and the notice you receive almost always names one of them. Each reason below is written the way a state agency describes it, with the state named, because what counts as a valid reason is state law.

  • The injury was not reported in time

    This is the cheapest denial to issue and the hardest to cure. Texas tells injured employees to report the injury to the employer within 30 days of the date of injury and to file the claim with the Division of Workers’ Compensation within one year, and says a work injury not reported or filed on time may not be compensable. Illinois requires notice to the employer as soon as practicable and no later than 45 days after the accident, orally or in writing. New York asks for written notice to the employer within 30 days and warns that failing to give it may cost you your right to benefits.

  • The insurer says the injury did not come from the job

    Texas frames the test as course and scope of employment: at the time of the injury you were doing activities related to the business of your employer and furthering the interests of your employer. Illinois puts the same question to the worker as one of the things the employee has to prove, that the injury arose out of and in the course of employment. A denial on this ground is an argument about where you were and what you were doing, and it is answered with witness statements and the injury report rather than with medical records.

  • There is not enough medical evidence linking the condition to the work

    Texas says outright that an insurance carrier may dispute a claim if it believes there is not enough information to show that your work activities caused an injury, illness or medical condition. Illinois lists causal connection as a separate issue the employee must prove. This is the reason that responds to documents: a treating physician’s report that states, in the doctor’s own words, what the work activity did to the body.

  • A pre-existing condition is blamed instead

    A degenerative spine, an old knee, a prior claim: the insurer argues the job did not cause the problem it found on the imaging. Illinois writes the causation issue as whether the medical condition was caused or aggravated by the alleged accident or exposure, so aggravation is inside what the Illinois act reaches. Whether an older condition reduces an award, and by how much, is a separate state-law question that a licensed attorney in your state can answer for your state.

  • The employer says you were not its employee

    Independent contractor classification, staffing arrangements and casual work all produce this denial. Illinois lists employment as one of the five things the employee must prove: that on the date of the accident a relationship of employee and employer existed between the parties. It is proved with pay records, schedules, instructions you were given and who supplied the tools, not with medical evidence.

  • An exception to liability applies

    Several state acts carve out conduct that takes an injury outside coverage even when it happened at work. Texas lists its exceptions plainly, drawn from Labor Code 406.032: you were intoxicated when you were hurt; you meant to hurt yourself or another person; another person meant to hurt you for reasons unrelated to work; you were hurt during an off-duty recreational, social or athletic activity; the injury was caused by an act of God and you were at no greater risk than the general public; or you were hurt during horseplay. Other states carve differently, so read your own act.

  • The filing deadline in the statute has already passed

    This one ends the claim rather than shaping it. Florida bars a petition unless the employee advised the employer of the injury and the petition is filed within two years after the employee knew or should have known the injury arose out of work performed in the course and scope of employment, with payment of benefits or treatment tolling that period for one year. California allows one year from the date of injury, from the end of a period covered by payment, or from the last date medical benefits were furnished. Texas gives one year from the date of injury to file with the division.

Reading the denial notice, and the clock it starts

A denial is a document with a job: say who decided what, and why. What it must contain, and how long you then have, are set state by state, so every rule below names the state it comes from.

What the notice has to tell you

New York is the most explicit: to contest a claim the insurer must notify you and file a notice of controversy with the Board within 18 days after the disability begins or within 10 days of learning of the injury or illness, whichever is later, and it must give the reasons why the claim is not being paid. Illinois requires an employer whose worker cannot work for more than three days to do one of three things: begin paying temporary benefits, give the employee a written explanation of the additional information it needs first, or give the employee a written explanation of why benefits are being denied. Texas tells the worker what to do with the stated reasons rather than what they must contain: you have to show that the carrier’s reasons for denying your benefits do not apply.

Silence is also an answer, and in California it favors the worker

California Labor Code 5402(b)(1) provides that if liability is not rejected within 90 days after the claim form is filed under Section 5401, the injury is presumed compensable, and that presumption can be rebutted only by evidence discovered after the 90-day period. For the injuries and illnesses defined in Sections 3212 to 3212.85 and 3212.9 to 3213.2 the period is 75 days. The state’s guidebook for injured workers says the same thing in plainer words: if the claims administrator does not send a letter denying your claim within 90 days after you filed the form or reported the injury, the claim is considered accepted in most cases. If your California claim has gone quiet, count the days.

The deadline that matters most is usually not on the denial letter

The unforgiving clocks run from a judge’s decision, not from the insurer’s letter. Texas gives 15 days to appeal a contested case hearing decision, counted from five days after the judge’s decision was mailed by regular mail, or from the date it was faxed or sent electronically, and the 15-day period does not count Saturdays, Sundays or the holidays listed in Texas Government Code Section 662.003. New York gives 30 days from the filing date of the judge’s decision under Workers’ Compensation Law Section 23. Illinois gives 30 days after receipt of the arbitrator’s decision to file a Petition for Review, and 35 days to file the transcript or an agreed statement of facts. California gives 20 days after service of a final order, decision or award to petition for reconsideration.

Where the contest gets filed, and who helps for free

Texas runs its process through the Division of Workers’ Compensation, and the Office of Injured Employee Counsel supplies ombudsmen who help unrepresented workers at no cost. California routes disputes to the Workers’ Compensation Appeals Board, where the division’s Information and Assistance officers help at no cost. Florida petitions go to the Office of the Judges of Compensation Claims, and the Department of Financial Services runs a Bureau of Employee Assistance and Ombudsman Office whose services are free. Illinois cases go to the Illinois Workers’ Compensation Commission, which charges no fee for forms or filing and requires electronic filing through its CompFile system.

The appeal path: five stages under different names

Labels change at the state line, but the sequence rarely does. Each stage below is described as the state that uses it describes it.

  1. 1

    Put the disagreement to the adjuster in writing

    Texas makes this a formal prerequisite rather than a courtesy. Its published steps are to talk with your attorney or ombudsman, then call the adjuster, and only then open the division’s process. The request that opens it, Form DWC-045, must include details such as letters or emails between the parties showing how the parties tried to resolve the dispute. Doing this in writing creates both the record the agency asks for and the dated paper trail you will want later.

  2. 2

    An informal conference or a mediation

    Texas calls it a benefit review conference: an informal meeting where you, with an attorney or ombudsman, meet the carrier and a benefit review officer who lists the disputes, discusses the facts, gathers what is missing and works toward an agreement, which is written and signed if reached. Florida builds mediation into the statute: 40 days after a petition for benefits is filed the judge of compensation claims orders a mediation conference, the mediation must be held within 130 days of the filing, and the conference is conducted informally without the formal rules of evidence or procedure.

  3. 3

    A hearing before a judge or an arbitrator

    Texas holds a contested case hearing before a division administrative law judge whose decision binds all parties and stays in effect while any appeal runs. Florida holds a final hearing before a judge of compensation claims within 90 days after the mediation and within 210 days after the petition was received, with the judge entering a final order on the merits within 30 days of the hearing. Illinois holds a trial before an arbitrator applying Illinois law, the rules of evidence and prior decisions, recorded by a court reporter, with a decision issued within 60 days. New York holds a hearing before a workers’ compensation law judge who takes testimony, reviews the medical records and wages, and decides the resolution and the amount of any award.

  4. 4

    Written review inside the agency

    This stage is a paper record, not a second trial. Texas sends the written appeal to a group of division judges who review the parties’ written statements, the hearing decision and the hearing record, and who hold no new hearing; they may affirm, reverse and decide it themselves, or send it back to the judge. Illinois sends it to three commissioners who review the arbitrator’s decision, the evidence and the transcript, take written arguments and a short oral argument of five to ten minutes, and must issue a decision within 60 days. New York sends it to a three-person review body at the Board; the other side may file a rebuttal within 30 days, a supporting brief may run to eight pages and nothing over fifteen will be considered, and evidence not offered at the hearing needs a sworn affidavit explaining why it was not. California petitions for reconsideration are limited by statute to five grounds and no other: that the Appeals Board acted without or in excess of its powers, that the decision was procured by fraud, that the evidence does not justify the findings of fact, that the petitioner discovered material new evidence that reasonable diligence could not have produced at the hearing, or that the findings of fact do not support the decision.

  5. 5

    The courts

    Texas calls it judicial review and takes it to district court, the step after the division’s own process is exhausted. Illinois goes to the circuit court, then possibly the Appellate Court and in some cases the Illinois Supreme Court, except that Commission decisions are final for employees of the State of Illinois. New York appeals go to the Appellate Division, Third Department, within 30 days after the decision is served on the parties. Florida compensation orders become final 30 days after copies are mailed unless appealed, and the appeal goes to the District Court of Appeal, First District. California allows a writ of review in the Court of Appeal or the Supreme Court, applied for within 45 days after reconsideration is denied or after the decision following reconsideration is filed.

The evidence that answers a denial

Texas states the burden without softening it: if there is a dispute about your claim, you must prove why it should be paid. Illinois says the same, that it is the employee’s responsibility to prove eligibility and the employer does not need to disprove the claim. These are the documents that carry that burden, in the order they usually matter.

  • A treating physician’s report written to the stated reason

    Not a chart note, a report. If the denial says the work did not cause the condition, the report has to say what the work activity did to the body and why the doctor thinks so. Texas asks a disputing worker to gather medical records showing you were hurt because of work activities and that the disputed condition was caused by the compensable injury, which is the sentence to hand the doctor.

  • The injury report and proof of when you gave notice

    Texas tells workers to bring information showing they reported the injury to the employer or filed the claim with the division on time. A dated written notice, an email with a timestamp or an incident form with a receipt stamp closes the most common denial on the list above. A hallway conversation does not.

  • Witness statements from people who were there

    Texas names witness statements first among the information to gather for a dispute. They bear directly on the course and scope denial, where the fight is about where you were and what you were doing rather than about medicine.

  • Wage records covering the disputed period

    Florida requires a petition for benefits to itemize the time period for which compensation was not timely provided and the specific classification of compensation, and to list every unpaid medical charge with provider, amount and dates. Illinois lists the average weekly wage as an issue the parties can still fight about after the claim itself is accepted. Pull the pay records before you file, not after.

  • A plan for the independent medical examination

    New York gives the insurer the right to have you seen by an independent medical examiner, and gives you specific protections around it: notice at least seven business days before the exam, the right to have it videotaped by you, a requirement that the examiner tell you if they are videotaping, the right to bring someone with you, and an exam held during regular business hours and reasonably close to your home. The report that follows may be used in deciding the degree of your disability and could affect your benefits, so treat the appointment as evidence being created.

  • A second medical opinion, requested before the objection deadline

    California is the clearest example of how fast this window closes. To challenge a treating doctor’s report you write the claims administrator saying you disagree, within 30 days of receiving the report if you have no attorney and within 20 days if an attorney writes it, and the state warns that missing the deadline risks losing the right to challenge that opinion at all. You then have 10 days to return the evaluator form to the division, and 10 days after the division sends a list of evaluators to pick one, book the appointment and tell the claims administrator; miss those and the claims administrator picks the doctor you must see.

  • A separate file for any denial of treatment

    A refusal to authorize surgery or therapy is usually its own dispute with its own clock. In California you contest a decision denying treatment your physician recommended by requesting independent medical review within 30 days after you received the decision, using the request form the claims administrator must include with the denial; otherwise the denial stands for 12 months unless your condition or circumstances change.

  • The notice itself, with proof of how and when it arrived

    Keep the letter, the envelope and any electronic delivery confirmation. Texas counts its 15-day appeal window from how the decision was delivered, five days after regular mail or the date of a fax or electronic transmission, so the delivery method is part of the deadline calculation rather than a detail.

Assemble this before the informal conference, not before the hearing. In Texas the exchange rules bite early: a party that receives a conference request has 10 days to send the other parties its pertinent information, and everything must reach the division at least 14 days before the conference.

The hearing itself: what happens, how long it takes, and what representation costs

A comp hearing is a trial, compressed. Texas describes it simply: the judge listens as the parties offer evidence on the issues, witnesses answer questions under oath, each party explains its side, and afterward the judge reviews the evidence and decides each issue. The employer is not required to attend unless it filed the dispute, though it may offer evidence if it does. The decisive constraint is that the judge decides on the evidence admitted at that hearing and nothing else, which is why the exchange deadlines above matter more than they look. New York runs its hearings on a virtual platform, and represented claimants and lay witnesses scheduled to testify are required to appear and testify by video with their faces fully visible on screen. Plan on testifying yourself: Texas has witnesses answer questions under oath, and New York’s video rule is written on the assumption that the claimant is on screen.

Getting to the hearing takes longer than the hearing takes. Illinois sets every case for a status call every three months, and a trial date has to be requested at one of them; an arbitrator cannot resolve a case before the employee reaches maximum medical improvement except through the emergency routes, and the Commission’s own handbook says one to two years commonly pass between filing and trial. Illinois offers two emergency paths, its Section 19(b) and 19(b-1) hearings, in which a decision is due within 180 days; a worker who is out of work and receiving neither treatment nor wage benefits is the typical 19(b-1) candidate. Florida moves faster by statute, with mediation inside 130 days and a final hearing inside 210, and it presumes that petitions seeking $5,000 or less are suitable for expedited handling, where argument and evidence are limited to 30 minutes and neither party is required to have counsel.

Representation in comp is contingent and capped by the state. Florida sets the schedule in the statute: no fee may be paid for a claimant unless the judge of compensation claims approves it, and an approved fee equals 20 percent of the first $5,000 of benefits secured, 15 percent of the next $5,000, 10 percent of the remainder provided during the first 10 years after the claim is filed, and 5 percent after that. Illinois caps the claimant’s attorney at 20 percent of compensation recovered, up to 20 percent of 364 weeks of the state’s maximum temporary total benefit unless a hearing is held and the Commission approves more, allows no fee at all on payments the employer made voluntarily, timely and properly, and requires the fee to appear on a representation agreement the Commission approves. California’s guidebook says the fee is usually 9 to 15 percent of the final permanent disability settlement or award and that a workers’ compensation judge must approve it. Where you would rather not pay a fee at all, the free state offices listed earlier, Texas ombudsmen, California Information and Assistance officers and Florida’s ombudsman bureau, do this work at no charge.

The dates that end a claim

More appeals die on a calendar than on the medicine. Texas states that it will not consider a late appeal or a late response, with no qualifier attached. In New York, unless a party files an appeal within 30 days of the filing date of the judge’s decision, that decision is final. In Illinois, if no petition for review is filed within 30 days of receiving the arbitrator’s decision, that decision becomes the decision of the Commission and, absent fraud, is conclusive. In Florida a compensation order becomes final 30 days after copies are mailed to the parties unless it is appealed. The day any of this paper arrives, put its date and its deadline on a calendar, and note how it was delivered, because in Texas the delivery method decides when counting starts.

Four other ways a live claim ends quietly. Letting the underlying filing deadline pass, which is two years in Florida from when you knew the injury was work related, one year in California from the injury or the last benefit furnished, and one year in Texas to file with the division. Letting the case sit, because an Illinois arbitrator may dismiss a case at the status call after three years unless the parties show good reason to continue it, and a Florida judge may dismiss a petition for lack of prosecution when nothing has been filed for 12 months. Saving evidence for later, because New York will not consider evidence that was not presented at or before the underlying hearing unless a sworn affidavit explains why. And going back to work without understanding what it does to the benefit in dispute: in Illinois an employer paying temporary benefits under a Section 19(b) petition may stop once the employee starts work of any kind, and neither side is entitled to that expedited hearing at all once the employee has returned to work and the disputed benefit amounts to less than 12 weeks of temporary total benefits. Because the judge decides on the evidence admitted, and the insurer is entitled to put its own evidence in, assume that anything documenting what you can physically do may end up in that record.

What you have while the appeal runs

An appeal decides whether you are owed anything. It does not tell you how much, and it does not pay the rent in the meantime. Three things are worth knowing while you wait.

  • Wage benefits usually do not flow during the appeal

    Illinois says it directly: while an appeal is pending the employer is not required to pay the benefits the arbitrator awarded, though interest is added to the award if the case is ultimately resolved in the employee’s favor, and medical bills carry 1 percent a month payable to the provider. New York is the same at the first stage, where insurers do not have to pay lost wage benefits while an appeal is pending before the Board, and the opposite after it: once the Board’s review body issues a decision that includes lost wage benefits, the insurer must pay those benefits and the related medical bills even if it appeals further.

  • A disputed claim is still a claim that can resolve by agreement

    The informal stages exist because most disputes settle there. A Texas benefit review officer’s stated job is to work toward an agreement, which is written and signed by the parties and the officer when reached. Florida requires a mediation conference unless the Deputy Chief Judge waives it, and lets the parties agree in advance to be bound by the result. How a settlement is priced and what it closes are separate questions, covered in the lump sum guide linked below.

  • The calculator gives you a number to hold the dispute against

    The workers’ compensation calculator applies your state’s recorded benefit figures to your own wage and injury, so you have a written estimate rather than an impression. It estimates benefits. It does not decide an appeal, it does not know what your denial says, and nothing it produces moves a deadline.

Three things to do today: find the date on the notice and count the days your state allows from it, write down the exact reason the notice gives in the words it uses, and ask your treating physician for a report that answers that reason and nothing else. A licensed attorney in your state, or the free state office named above, can confirm which deadline is yours. Nothing on this page is legal advice.

Your state changes the rules

Appeal deadlines and the body that hears a dispute are set by each state’s own act and are not in our database; pick your state for its benefit rates and claim filing deadline, and confirm any appeal date with that state’s agency.

Workers' Compensation claims: the national picture

  • Filing deadlines range from 3 months to 6 years by state (average 1.8 years)
  • Typical wage-replacement rate is about 68% of your average weekly wage
  • State maximum weekly benefits average about $1,243, but vary widely

Which case type is your potential case?

The same situation runs through different legal lanes depending on how it happened — and the lane changes what you can recover.

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Sources & review

Information on this page reflects laws and published figures as of 2026-09-14. This is general information, not legal or medical advice, and not a prediction for any potential case. Verify current rules with a licensed attorney before making decisions. Learn about our methodology.

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