Workers' Comp Audit Dispute Letter: Free Template and How to Fill It In

Updated October 21, 2026 · TrueUpAudit

A dispute letter works when it's specific: each error, the fix you want, and the proof. Here's a fill-in template built that way, plus guidance on every section.

Educational information only. Not insurance, legal, or consulting advice. TrueUpAudit is not an insurance agency or consultant. Rules differ by state and carrier. Always check your policy and your carrier's audit notice.

Before you write: three things to have in hand

1. Your deadline. It's on your audit invoice or notice. Carriers set their own dispute windows, and they can be short.
2. The full audit worksheet. Not just the invoice: you need payroll by class, the rates, and any subcontractor charges, so you can point to specific lines.
3. Your proof. Certificates of insurance, payroll registers, overtime breakdowns, job descriptions, contracts and invoices.

Not sure which lines are wrong yet? Start with the 7 usual causes of a high audit bill and run the numbers in the Audit Bill Estimator.

Where to send it

Use the address, email, or fax shown on your audit invoice or policy notice. Carriers often route audit disputes to a specific department, and that address can differ from the general claims or payment address. If the notice doesn't say where disputes go, call or email the carrier's premium audit department and ask, then note who told you.

We only list contact details for two organizations, because they publish them for this purpose:

• State Fund (California): premium audit disputes to ADispute@scif.com; phone (888) 782-8338; mail P.O. Box 28920, Fresno, CA 93729-8917, per State Fund's Premium Audit Guide. Details in our State Fund dispute guide.
• NCCI dispute resolution (for escalation after you've tried the carrier, in NCCI states): DisputeResolution@ncci.com; fax 561-893-5043; mail NCCI, 901 Peninsula Corporate Circle, Boca Raton, FL 33487-1362, per NCCI. This is not where your first dispute goes. Start with your carrier.

Send it in a way you can prove: email with the attachments, certified mail, or the carrier's portal, and keep copies of everything.

The template

Copy this, fill in the brackets, and delete any item that doesn't apply. Each disputed item stands on its own with what was audited, what you're asking for, and the proof.

[Your Business Legal Name]
[Street Address]
[City, State ZIP]
[Phone] | [Email]

[Date]

[Carrier Name]
Attn: Premium Audit Department
[Use the exact address or email shown on your audit invoice or policy notice]

Re:  Dispute of Final Premium Audit
     Policyholder: [Business Legal Name]
     Policy Number: [Policy #]
     Policy Period: [MM/DD/YYYY] to [MM/DD/YYYY]
     Audit Invoice Number / Date: [Invoice #], [Invoice Date]

To the Premium Audit Department:

I am writing to dispute specific items in the final premium audit for the policy listed above. I have reviewed the audit worksheet against our payroll records, subcontractor records, and policy documents. The items below are, in our view, incorrect. For each item I have listed the correction requested and the attached records that support it.

DISPUTED ITEM 1: [Short title, e.g. "Subcontractor charge: ABC Framing LLC"]
  As audited:   [e.g. "$48,000 added as payroll in class ____ at rate ____"]
  Requested:    [e.g. "Remove; subcontractor carried its own workers' comp"]
  Support:      [e.g. "Exhibit A: certificate of insurance showing workers'
                 compensation coverage from 03/01/YYYY to 12/31/YYYY,
                 covering all dates worked"]
  Premium effect (our estimate): [$ amount]

DISPUTED ITEM 2: [e.g. "Overtime premium not excluded"]
  As audited:   [e.g. "$27,000 total overtime included at full value"]
  Requested:    [e.g. "Exclude the premium portion: 1/3 of time-and-a-half
                 pay ($9,000)"]
  Support:      [e.g. "Exhibit B: payroll register showing overtime premium
                 recorded separately, by employee and pay period"]
  Premium effect (our estimate): [$ amount]

DISPUTED ITEM 3: [e.g. "Employee classification: [Name/Role]"]
  As audited:   [e.g. "$52,000 in class ____"]
  Requested:    [e.g. "Reassign to class ____ ; duties are office-only"]
  Support:      [e.g. "Exhibit C: job description and payroll records;
                 employee does not visit job sites"]
  Premium effect (our estimate): [$ amount]

[Add or remove items as needed.]

SUMMARY
  Total audit invoice:                     [$]
  Total disputed (our estimate):           [$]
  Undisputed amount:                       [$]
  Undisputed amount paid on [date] by [check #/method]: [$]

Our calculation of the disputed amount is attached as Exhibit [_].

REQUEST
Please (1) review the items above, (2) issue a revised audit and invoice reflecting the corrections, or provide a written explanation for any item you do not change, including the rule or basis relied on, and (3) confirm in writing whether collection of the disputed amount will be held while this review is pending.

We want to resolve this directly with you. If any additional records would help, please tell me what you need and I will provide them promptly.

Sincerely,

[Signature]
[Name], [Title]
[Business Legal Name]

Enclosures:
  Exhibit A: [description]
  Exhibit B: [description]
  Exhibit C: [description]
  Exhibit [_]: Calculation of disputed premium
  Proof of payment of undisputed amount

cc: [Your insurance agent/broker]

Copy template to clipboard

How to fill in each part

The "Re:" block

Match the policy number, policy period and invoice number exactly as they appear on the carrier's documents. It saves the carrier from having to match your letter to the right file.

Each disputed item

This is where disputes succeed or fail. Carriers handle a lot of disputes that just say "this bill is too high." Those go nowhere. State Fund's audit guide, for example, asks for a written statement of each specific error, the correction, and supporting source records, and says a vague dispute won't hold the bill. Even if your carrier doesn't spell it out, that's the standard to aim for.

• As audited: quote the line from the worksheet: the class, the payroll, the amount.
• Requested: say exactly what change you want. "Remove," "reduce to $X," or "move $X to class Y."
• Support: label each attachment (Exhibit A, B, C) and describe what it shows.
• Premium effect: your estimate of how much the correction changes the bill. The estimator and sub calculator can help you work this out.

Common items and the proof that goes with them

The summary and payment

State the total invoice, the amount you dispute, and the amount you agree with. Then pay the undisputed part and say so in the letter. That shows good faith, and in NCCI states, proof that undisputed premium was paid is required before NCCI will take a dispute.

The request

Ask for a revised audit, or a written explanation for any item they won't change. A written explanation tells you exactly what to answer if you need to escalate.

Tone: firm, factual, short

• Stick to facts and records. Leave out frustration, even if you feel it.
• Don't make threats, and don't claim things you can't document.
• Keep it to what's needed. The exhibits do the heavy lifting.
• You sign it as the business owner. It's your dispute.

After you send it

Log the date and method, follow up in writing if you don't hear back, and loop in your agent or broker. If the carrier won't correct an item and you're in an NCCI state, you can escalate with NCCI's dispute resolution process. Our step-by-step dispute guide covers what NCCI requires.