Staffing Agency Workers' Comp Audits: The Payroll Reporting Mistakes That Start Disputes

A workers' comp premium audit compares the payroll estimated at bind with the payroll actually paid, by class code and by state, and staffing agencies see more disputes than most employers because their payroll changes weekly and spreads across many classes. The most common disputes come from four places: payroll mapped to the wrong class, temp-to-hire conversions, workers paid outside payroll, and an estimate that was too low for a growing agency. Each one can be prevented with records the agency already has, if it organizes them before the auditor asks.

How a staffing audit works

The insurer sets the premium at bind from estimated payroll in each class. After the policy ends, an auditor reviews payroll records, and the premium is adjusted to actual payroll. For a staffing agency the auditor wants to see payroll by worker, by client assignment, by class and by state. As we explain in our staffing agency workers' comp guide, a temporary worker is generally classified by the work performed at the client's site, so the assignment record is the classification evidence.

Where audits go wrong

Payroll in the wrong class. A worker placed in a warehouse but coded to a clerical class is the classic error. The rate difference between a clerical class and a warehouse class is large, and an auditor who finds one miscoded group will examine the rest. Keep the assignment, the job description and the client's operation on file for each placement.

Temp-to-hire conversions. When a client hires a temp, payroll should move to the client's books at a documented date. If the agency keeps paying the worker, or the conversion date is unclear, payroll and premium stay with the agency. Keep conversion notices and the final pay date for each conversion.

Workers paid outside payroll. Auditors look for workers paid on 1099s, through third parties or in cash. If those workers are employees under the state's test, their pay is added to payroll at audit with premium and sometimes penalties. California's test is covered in our owner-operator payroll rule guide. Do not use a payment method that keeps a worker off your payroll register.

Overtime. In many states, the premium portion of overtime pay can be excluded from rating payroll if it is separately recorded. If the payroll register does not break it out, the auditor uses the full amount. Confirm the state's rule and set up the register to separate straight time from overtime premium.

Other pay. Bonuses, per diems and housing or travel allowances each have rules that vary by state and by whether the payment is reimbursement of documented expenses. Ask the insurer how each is treated before the audit rather than after.

Multi-state payroll. An agency that places workers across state lines must report payroll by state, because each state has its own classes and rates. A single combined payroll figure cannot be rated correctly.

Two worked examples

These use illustrative rates, not a quote or any insurer's filed rates, and a 1.00 mod unless stated.

Growth beyond the estimate. An agency estimates $2,000,000 of payroll in a light-industrial class at an illustrative $6.00 per $100 and then actually pays $2,600,000. The extra $600,000 of payroll generates $36,000 of additional premium at audit. At a 1.30 mod, the same extra payroll generates $46,800. An agency that is growing fast should update its estimate during the year instead of waiting for the audit.

Misclassified payroll. An agency reports $400,000 of payroll in a clerical class at an illustrative $0.35 per $100, and the auditor reclassifies it to a warehouse class at $6.00. The additional premium is $22,600, calculated as ($6.00 minus $0.35) times 4,000 hundred-dollar units. Add penalties or a deeper audit of the other classes and the cost rises.

Pay-as-you-go and estimates

Some programs bill premium against actual reported payroll each pay period, which removes most of the end-of-term surprise for agencies with fluctuating headcount. The trade-offs are more frequent reporting and, in some programs, fees tied to payroll or checks. Compare annual cost, not rate alone. Our PEO and ASO guide for staffing agencies explains where those structures fit.

A monthly checklist

• Reconcile payroll by class and state to the estimate and update the insurer when headcount moves materially.

• Keep the assignment record, client name and job description for every placement.

• Record overtime premium separately from straight time.

• Document every temp-to-hire conversion with the date and the final pay date.

• Run every worker through payroll or document a genuine independent contractor with a current certificate.

• Save time records, payroll registers and tax filings in a form that can be produced by class and state.

• Review the insurer's classification schedule against what workers actually do.

If an audit bill looks wrong, the process for challenging it is in our premium audit disputes guide and our audit disputes handbook.

Frequently Asked Questions

Why are staffing agency workers' comp audits so detailed?

Staffing payroll changes weekly, spans many class codes and states, and includes workers who may be converted to client payrolls. Insurers also pay attention to underreported payroll and misclassified workers in the staffing class, so auditors examine records closely.

How is a temp worker classified at audit?

Generally by the work the temp performs at the client's site, not by the agency's office operations. The assignment record and the client's operation are the evidence, and the details vary by state and rating bureau.

What happens to payroll when a temp is hired by the client?

Payroll should move to the client at a documented conversion date. If the agency continues to pay the worker, or the date is unclear, the payroll stays with the agency policy and is audited there.

Can I exclude overtime premium from payroll?

In many states the premium portion of overtime can be excluded if it is separately recorded, but the rules vary by state. Confirm the state's rule and make sure the payroll register shows straight time and overtime premium separately.

What if my payroll grows faster than my estimate?

The audit bills the additional premium after the policy ends. Updating the estimate during the year keeps the deposit and the final bill closer together and avoids a large surprise.

Facing a staffing renewal or an audit that does not look right? Tell us the states, the payroll by class and the mod through Will We Write It. Send it to proposals@cprbrokers.com or call 714-928-3858 (office 704-256-5945).