Your First Workers’ Comp Audit: What to Expect as a New Contractor
5 min read · Updated June 20, 2026
Your first workers’ comp policy is wrapping up, and you just got a notice about an “audit.” It’s normal — every policy gets one — but your first is the one most likely to surprise you. Here’s why, and how to walk in ready.
Why the first audit swings hardest
When you bought the policy, you had no history, so the premium was built on an estimate of payroll you hadn’t earned yet. The first audit is the first time those numbers meet reality — so the gap between estimate and actual is usually the widest it’ll ever be. That gap is your bill or your refund. What an audit is →
What triggers it
The policy period ending. Shortly after, the carrier reaches out to reconcile — by mail/form, phone, or an in-person review, depending on your size.
What they’ll ask for
- Payroll records, plus 941s, W-2/W-3, and state filings to reconcile against.
- Certificates of insurance for every subcontractor you paid.
- 1099s and contracts for those subs.
- Records that separate overtime, and owner/officer pay.
The surprise to brace for
For new contractors, the shock is almost always subcontractors. If you paid subs who can’t document their own coverage, their pay gets added to your payroll — and a first-timer who didn’t collect COIs can face a bill many times the original premium. Check your subs before the auditor does →
How to keep it calm
Have the documents organized, separate your overtime, know your owner cap, and have a COI or exemption for every sub. Do that and your first audit is a formality. Estimate your exposure first →
General information for contractors, not legal or insurance advice. Audit procedures vary by state and carrier — confirm yours.
Frequently asked questions
Why am I getting a workers’ comp audit?
Every workers’ comp policy is audited at the end of the term. Your premium was based on estimated payroll, and the audit reconciles it against what you actually paid out.
What documents do I need for my first workers’ comp audit?
Payroll records, 941s, W-2/W-3 and state filings, certificates of insurance and 1099s for every subcontractor, and records that separate overtime and owner/officer pay.
Can my first audit increase my premium?
Yes. If your actual payroll exceeded the estimate — or you paid subcontractors who can’t document coverage — the audit can add premium, sometimes well above the original quote.
See your own exposure — free
Two free tools, no signup: estimate your audit surprise, and check whether your subs’ COIs actually protect you.
Related guides
Pay-As-You-Go Workers’ Comp: Smaller Audits, Better Cash Flow
Pay-as-you-go workers’ comp bills premium on real payroll each pay period instead of an upfront estimate — so the year-end audit holds far fewer surprises. Here’s how it works.
5 min read · Read →When Does a Workers’ Comp Audit Happen? Timing and What to Expect
Wondering when your workers’ comp audit will land? Here’s the timing — when it’s triggered, how long after your policy ends, and how long the audit itself takes.
5 min read · Read →What Counts as Payroll on a Workers’ Comp Audit? (More Than You Think)
Workers’ comp premium is based on payroll — but “payroll” includes more than base wages. Here’s what’s in, what’s out, and what you can legitimately exclude.
6 min read · Read →