Compliance and payroll

Workers compensation for contractors explained

Workers compensation pays medical bills and lost wages for employees hurt on the job, and in exchange generally limits their right to sue the employer. Each state runs its own system, premiums are driven by payroll, job classification, and claims history, and an uninsured sub can end up on your policy at audit.

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Workers compensation is state-mandated insurance that covers employees' medical care and lost wages after a work injury or illness. For contractors, three things matter most: your state's rules decide whether you must carry it and where you can buy it; your premium is estimated up front from payroll by job class and then corrected by an audit; and subcontractors without their own coverage can be treated as your employees for premium and, in some states, for liability.

How workers comp is regulated

There is no single national workers comp program for private employers. The U.S. Department of Labor's Office of Workers' Compensation Programs runs federal programs (federal employees, longshore and Defense Base Act, coal mine, and nuclear weapons workers) and keeps a directory pointing to each state's workers compensation agency. For a typical contractor, the state agency is the rulebook.

Where you buy coverage depends on the state

  • Most states: buy from a private carrier, a state fund that competes with private carriers, or self-insure if you qualify.
  • Monopolistic states: Ohio, North Dakota, Washington, and Wyoming require employers to buy from the state fund. Those state policies do not include employer's liability coverage, which many contractors add as stop gap coverage endorsed onto a general liability policy.
  • Texas: the Texas Department of Insurance says private employers can choose to carry workers comp, but it is not required in most cases. Employers without it (nonsubscribers) must report that status to the state and report certain injuries, illnesses, and deaths. Contract terms and public owners often require it anyway.

Rules on who must be covered, how small a company can be before coverage is required, and whether owners and officers can be excluded vary by state. Check your state agency through the DOL directory before relying on any general rule.

How the premium works for a construction company

Workers comp premium is built from your payroll, split by job classification code, each with its own rate. Field trades carry higher rates than clerical work. The total is then adjusted by your experience modification factor, which compares your claims history to what is expected for a company of your size and mix. See how to calculate a construction company EMR and how to lower your experience modification rate.

The policy starts with an estimated payroll. After the policy year, the carrier audits your actual payroll by class and bills or refunds the difference. Contractors get surprised at audit in three ways: payroll grew more than estimated, employees were coded to the wrong class, or the carrier found payments to subcontractors who had no coverage of their own.

Workers comp and subcontractors

If a sub has no workers comp, the auditor may treat what you paid that sub as your payroll and charge premium on it. Depending on the state, a general contractor may also be treated as the employer of an uninsured sub's injured worker when benefits are owed. Ask your broker how your state handles it. That is why a current certificate showing statutory workers comp coverage belongs in every subcontractor file. On the standard ACORD 25 certificate, check the statutory limits box, the employer's liability limits, and the question asking whether any proprietor, partner, or officer is excluded. See what a subcontractor COI should include.

Many contracts also require a waiver of subrogation on the sub's workers comp policy. A common form is NCCI's WC 00 03 13, under which the carrier agrees not to enforce its right to recover payments from the party named in the schedule, to the extent a written contract requires it.

Crews working in other states

A Kansas City contractor that sends a crew across the river to a Missouri job, or a Georgia GC that picks up work in South Carolina, needs to know whether its policy covers employees working in that state. Policies list the states they cover, and coverage written for one state may not satisfy another state's rules. Tell your broker about every out-of-state job before mobilizing, not after the first injury. A monopolistic state job may require a separate policy from that state's fund.

Workers comp claims and OSHA records are separate

An injury can be a comp claim, an OSHA recordable case, both, or neither. The carrier decides the claim under state law. You decide recordability under 29 CFR Part 1904. Run both processes for every injury, and see OSHA recordkeeping for contractors for the second one.

How to manage workers comp in 6 steps

  1. Confirm your state's rules for every state where you have employees working, including out-of-state jobs.
  2. Classify payroll correctly from day one. Track hours by class code in payroll, especially for employees who split time between field and office.
  3. Collect sub certificates before the first payment and track expirations.
  4. Report injuries fast to your carrier and handle return-to-work with light duty where possible. Claims drive your mod.
  5. Prepare for audit with payroll by class, subcontractor payments, and certificates for every sub you paid.
  6. Review the mod every year with your broker and check the claim data behind it.

Worked example: an audit surprise

Say a remodeling contractor estimated $600,000 in field payroll for the year. During the year it hired three small subs for demo and drywall and paid them $90,000 in total. Two of the three had certificates on file. The third, paid $28,000, did not.

At audit, actual field payroll comes in at $660,000. The auditor also adds the $28,000 paid to the uninsured sub to the contractor's payroll in a field class. The contractor now owes premium on $688,000 instead of $600,000. The extra $60,000 of its own payroll was unavoidable. The $28,000 was not. A certificate on file, or a requirement that the sub carry coverage before starting, would have kept it off the bill. Your carrier's audit rules control the exact treatment.

Mistakes to avoid

  • Underestimating payroll to lower the deposit premium, then getting a large audit bill.
  • Putting all field payroll in one class when crews do different trades.
  • Paying subs without certificates, or with expired ones.
  • Classifying employees as 1099 subs to avoid premium. See construction worker classification.
  • Forgetting out-of-state coverage when sending crews across state lines.

Related terms and tools

See labor burden, waiver of subrogation, and how to manage construction payroll across multiple states. Smart Business Automator tracks subcontractor certificates and expiration dates alongside payments, so you can pull an audit-ready list of subs and coverage, part of subcontractor compliance automation.

Frequently asked questions

Do I need workers comp if I have no employees?

It depends on your state and your contracts. Some states let sole proprietors exclude themselves, and some GCs require subs to carry a policy anyway. Check your state agency and your subcontract.

Which states require workers comp from a state fund?

Ohio, North Dakota, Washington, and Wyoming are monopolistic states where employers buy coverage from the state fund. Employer's liability is not included, so contractors often add stop gap coverage.

Is workers comp required in Texas?

The Texas Department of Insurance says private employers can choose to carry it but it is not required in most cases. Nonsubscribers must report that status to the state and report certain injuries. Many contracts require coverage regardless.

Why did my workers comp audit charge me for subcontractors?

Carriers may treat payments to subcontractors without their own coverage as your payroll. Keep current certificates for every sub you pay and give them to the auditor.

What is a waiver of subrogation on workers comp?

An endorsement such as NCCI form WC 00 03 13 in which the carrier agrees not to pursue recovery from a named party, usually the GC or owner, when a written contract requires the waiver.

Sources

  1. U.S. Department of Labor, OWCP: State workers' compensation officials
  2. Texas Department of Insurance: Workers' compensation for employers
  3. Insureon: Monopolistic workers' comp states
  4. City of Sierra Madre, CA: Sample insurance for construction contracts (ACORD 25 and NCCI WC 00 03 13)
  5. Cornell LII: 29 CFR 1904.4 Recording criteria
Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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