A denial letter feels final. It isn’t. Most workers’ comp denials are reversed on appeal — sometimes by the same adjuster who issued them — once new evidence is presented or the denial reason is rebutted. Here’s how to read your denial letter, decide whether to appeal, and the deadlines you cannot miss.
Read the letter for the exact denial reason
Every denial letter cites a specific reason, usually one or more of these:
- Not work-related (compensability denial). The carrier says the injury didn’t arise out of employment. Common in repetitive-strain, mental health, and aggravation-of-prior-condition claims.
- Late reporting. You missed the state’s notice deadline (often 30 days from injury, but varies).
- Missed statute of limitations. You filed the claim itself outside the state’s filing window (typically 1–3 years).
- Pre-existing condition. The carrier argues your symptoms come from an old injury, not the work event.
- No medical evidence. The doctor’s notes don’t document the injury or the work connection clearly enough.
- Coverage dispute. The carrier says you weren’t covered by the WC policy at the time of injury (e.g. independent contractor argument).
The denial reason determines the appeal strategy. A pre-existing condition denial gets fought with a specialist’s opinion distinguishing old from new findings. A late-reporting denial gets fought by proving you reported on time. Different reasons, different evidence.
Note the appeal deadline — and write it on the wall
Every state imposes a hard deadline for appealing a WC denial. Examples:
- California: generally 1 year from the denial date to file the Application for Adjudication
- Florida: 2 years from the date of accident, but Petition for Benefits within 2 years of any specific denial
- Texas: 90 days to request a benefit review conference
- New York: 30 days to request reconsideration, plus longer windows for board appeals
- Pennsylvania: 3 years to file the Claim Petition
Confirm your specific state’s deadline from the denial letter itself or the state WC board’s website. Treat the deadline like a flight time — give yourself a multi-week buffer.
Gather the rebuttal evidence
Now build the case that disproves the denial reason. Depending on what the carrier said:
To rebut “not work-related”
- Coworker statements describing the event and your symptoms
- The original incident report with the date matching your medical visit
- Treating physician’s causation statement: explicitly tying the injury to the work event
- If a specific exposure or repetitive task is at issue: photos or video of the task, equipment specs, expert opinion
To rebut “late reporting”
- The email or text you sent your supervisor with the date
- HR’s acknowledgement
- The first medical visit’s intake form noting the work cause
To rebut “pre-existing condition”
- Pre-injury medical records showing no prior treatment for that body part
- A specialist’s report distinguishing chronic findings from acute findings
- Imaging from before vs. after the injury
To rebut “no medical evidence”
- Updated visit notes with clearer language tying the symptoms to the work event
- Specialist consultation if your treating doctor isn’t well-versed in WC documentation
- Additional diagnostic imaging if there’s a clinical reason
Request the carrier’s file
In most states you have a right to copies of everything the carrier has on your claim: the adjuster’s notes, every medical report they obtained, expert opinions they relied on, photos, surveillance. Ask in writing. The denial often relies on a single expert opinion you can rebut — but only if you know it exists.
If the carrier hired a defense medical examiner whose opinion underlies the denial, your own treating physician’s opinion to the contrary becomes the key piece of evidence.
File the appeal
The formal mechanism varies by state. Common forms:
- California: Application for Adjudication of Claim (filed with the Workers’ Compensation Appeals Board)
- Florida: Petition for Benefits (filed with the Office of the Judges of Compensation Claims)
- Texas: Benefit Review Conference Request (filed with the Division of Workers’ Compensation)
- New York: Request for Further Action (filed with the Workers’ Compensation Board)
Include the rebuttal evidence with the petition. The accepted-or-denied determination doesn’t require new evidence to file, but it does require new evidence to win.
Decide if you need a lawyer
After a denial, the odds shift heavily toward needing representation. Statistics from multiple state boards consistently show that represented claimants recover substantially more in contested cases than unrepresented ones. Workers’ comp attorneys work on contingency — they collect a percentage of the recovery only if they win, capped by state statute (typically 10–15% of the award).
Find a workers’ comp attorney in your state and schedule a free consultation. Bring the denial letter, the rebuttal evidence you’ve gathered, and a list of dates: when you were injured, when you reported, when you saw which doctor, when the denial arrived.
What happens at the hearing
If informal resolution fails, you’ll get a hearing in front of a workers’ comp judge. Each side presents medical evidence, witnesses, and arguments. The judge issues a written decision, usually within a few weeks.
Hearings are not jury trials. The rules of evidence are relaxed. Medical records and physician depositions usually carry more weight than oral testimony. Most contested WC cases settle before the hearing once each side sees the other’s evidence — but that settlement number depends on whether you could plausibly win at the hearing.
Common mistakes during the appeal window
- Stopping medical treatment. Some workers think if the claim’s denied, they can’t see the doctor. You can — through your private health insurance — and you should. Gaps in treatment hurt your case.
- Returning to full duty too soon. If you tough it out and go back without medical clearance, the carrier uses your return as evidence the injury wasn’t serious. Get a doctor to determine work status, not your supervisor.
- Posting on social media. Surveillance includes your public posts. Photos of you hiking, lifting your kid, or back at the gym become exhibits at hearing.
- Talking to the adjuster’s investigator without counsel. Recorded statements after denial can be used to lock in inconsistencies. You don’t have to give one.
Bottom line
A denial is the start of the contested phase, not the end of your claim. You have a defined window to appeal, a defined process for presenting evidence, and (in most states) a strong statutory pressure on the carrier to settle before hearing. Read the denial letter carefully, mark the deadline, gather rebuttal evidence, and decide if you need representation. Most denials get overturned — if you treat the denial as a starting point and not a conclusion.
For step-by-step on what to do before a denial happens, see What to Do After a Work Injury: The First 72 Hours — many denials are caused or prevented by what happens in week one.