How to Dispute a Workers’ Comp Audit (and Recover Overcharges)

A workers’ comp audit result is not the final word — it’s a bill you’re allowed to question. Auditors work fast and default to assumptions that aren’t always in your favor. If the number looks high, here’s how to push back the right way.

Step 1: Don’t sign off blind — get the worksheet

When the audit comes back, request the audit worksheet from the carrier. This shows the payroll figures, the class codes used, how subcontractors were treated, and whether owner caps and overtime were applied. You can’t dispute what you can’t see. Note your deadline: many states give a limited window (often around 24–60 days, but it varies) to formally object, so act quickly.

Step 2: Check the four usual overcharges

• Subcontractors wrongly added. If a sub’s pay was folded into your payroll, but you have a certificate of insurance with a workers’ comp line covering those dates, produce it. Coverage you can document after the fact can still get the charge removed.
• Misclassification. Work defaulted to a higher-rated (governing) class when a lower one applies. Back it up with written job descriptions and time breakdowns — not a verbal explanation.
• Owner / officer payroll. Owners can usually be capped at a state minimum/maximum or excluded; check the full salary wasn’t dropped in at face value.
• Overtime excess. In most states only straight-time counts; the extra half of time-and-a-half should be removed (total OT ÷ 3 ≈ the excludable part).

More detail on those three overcharges →

Step 3: Submit a documented dispute

Put your objection in writing to the carrier’s audit department with the evidence attached — COIs, payroll detail separating overtime, classification documentation, owner cap references. A specific, documented dispute (“sub X had WC coverage 1/1–12/31, certificate attached”) gets traction; a general “this seems too high” does not.

Step 4: Escalate if needed

If the carrier won’t budge and you’re in an NCCI or independent-bureau state, you can often request a classification or rating review from the bureau, or file a complaint with your state’s Department of Insurance. Keep copies of everything and mind the deadlines.

Better than disputing: don’t get overcharged

Disputes are recoverable dollars, but they cost time and you don’t always win. The contractors who don’t fight audits are the ones who walked in documented — COIs collected up front, classifications written down, overtime separated. Estimate your exposure and join the early-access list for the tool that keeps that evidence organized all year.

General information for contractors, not legal advice. Audit dispute rights and deadlines vary by state and carrier — confirm yours.