Construction is one of the highest-risk industries, so construction workers comp rates are among the most expensive — calculated per $100 of payroll based on each trade’s class code, and varying widely from one state to the next. In nearly every state, coverage is required once a construction business has employees, and several states have especially strict rules that can require coverage even for certain owners or one-person operations. General contractors also routinely require subcontractors to carry their own coverage.
This guide focuses on what drives construction rates and how state requirements differ. For the fundamentals of coverage, see our guide on workers comp for construction.
Why Construction Workers Comp Is So Expensive
Construction trades carry high injury frequency and severity — falls, equipment injuries, and struck-by accidents are common and costly. Insurers price that risk into each trade’s class code, so construction rates sit near the top of the scale. Our overview of common construction-related work injuries shows why.
How Construction Rates Are Calculated
- Class code by trade — Roofers, framers, electricians, and masons each have different codes and rates; higher-risk trades cost more.
- Per $100 of payroll — Premiums are figured per $100 of payroll for each class code.
- State — The same trade can cost dramatically more in one state than another.
- Experience modification rate (EMR) — A clean safety record lowers your premium; past claims raise it.
- Uninsured subcontractors — Subs without their own coverage can be added to your payroll basis at audit.
To estimate your own number, our walkthrough on how to calculate workers comp cost per employee explains the per-$100 method.
State Requirements: What Varies
Workers comp is regulated at the state level, so construction businesses face different rules depending on where they operate.
- Employee threshold — Most states require coverage once you have one or more employees; a few set a higher threshold for general businesses but treat construction more strictly.
- Owner and officer rules — Some states require coverage even for sole proprietors or single-officer construction businesses, while others let owners exclude themselves.
- Monopolistic states — In Ohio, North Dakota, Washington, and Wyoming, you must buy coverage through the state fund.
- Subcontractor verification — Many states hold general contractors responsible for uninsured subs.
Because the rules and rates differ so much, confirm your specific state’s construction requirements before bidding on work — operating without required coverage can trigger stop-work orders and penalties.
If you want to estimate how construction payroll, workers comp, and compliance fit together, this baseline tool can serve as a starting reference: https://peopaygo.com/get-rate-exchange-blogs/u/step-1.
How Construction Companies Can Lower Their Rate
- Build and document a safety program (fall protection, equipment training) to improve your EMR
- Report and manage claims quickly to limit severity
- Verify every subcontractor carries current coverage
- Classify each worker by their actual trade and duties
- Consider pay-as-you-go or a PEO to tie premiums to real payroll and access pooled rates
Frequently Asked Questions
How much does construction workers comp cost?
It’s among the most expensive of any industry. Cost depends on each trade’s class code, your state, payroll, and claims history, and is calculated per $100 of payroll. Higher-risk trades like roofing cost the most.
Is workers comp required for construction in every state?
In nearly every state, yes — once you have employees. Several states apply especially strict rules to construction, sometimes requiring coverage even for certain owners. Confirm your state’s specifics.
Do general contractors need their subcontractors to have workers comp?
Usually. Many states hold general contractors responsible for uninsured subcontractors, and uninsured subs can be added to your payroll at audit, raising your premium.
Why do construction rates vary so much by state?
Because workers comp is state-regulated. Rates reflect each state’s injury data, benefit levels, and market, so the same trade can cost far more in one state than another.
The Bottom Line
Construction workers comp is expensive because the work is high-risk, and your rate depends on trade class code, state, payroll, and claims history. It’s required in nearly every state once you have employees, with stricter owner rules in many. The best cost levers are a documented safety program, fast claims management, subcontractor verification, and pooled or pay-as-you-go premiums.
If you want to see how bundling construction workers comp with payroll and HR through a single integrated provider controls cost and audits, this baseline tool can serve as a starting reference: https://peopaygo.com/get-rate-exchange-blogs/u/step-1.
Running a construction business? Confirm your state’s requirements and each trade’s class code, then tighten safety and subcontractor verification to keep your premium down.
This article is for informational purposes only and does not constitute legal or insurance advice. Workers compensation rates, class codes, and state requirements vary and change frequently. Consult a qualified insurance broker for guidance specific to your construction business.
