Cost guide
How Much Does Workers' Compensation Insurance Cost?
Workers' comp premiums are typically driven by payroll, class code, and your experience modifier, with rates varying widely by state.
Workers' compensation cost is calculated by multiplying every $100 of payroll by a class-code rate, then adjusting for your experience modifier and any carrier credits. Because rates are set per state and per occupation, an office payroll may cost cents per $100 while a roofing payroll costs many dollars. Correct classification and a clean claims record are the two biggest levers on the final premium.
Workers' compensation is priced differently than most commercial coverage. Instead of a flat fee, carriers typically apply a rate per $100 of payroll for each class code assigned to your operation, then adjust that base rate up or down using your experience modification factor (or "mod").
Because rates are set at the state level and reviewed by rating bureaus like NCCI in most states, two businesses doing similar work in different states can see noticeably different premiums. Claims history, payroll size, and the mix of job duties all factor into the final number.
Most small businesses land somewhere between a few hundred and several thousand dollars a year, but higher-hazard trades like roofing or logging often pay substantially more per $100 of payroll than office-based operations.
Average cost benchmarks
- Base rates commonly range from about $0.10 to $0.30 per $100 of payroll for low-risk office work.
- Moderate-risk trades, such as general contracting or retail with heavy lifting, often see $1 to $5 per $100 of payroll.
- High-hazard classes like roofing, structural steel, or logging can run $10 to $25+ per $100 of payroll in some states.
- A new business with no claims history typically starts with a mod of 1.00, which can rise or fall over time.
- Minimum premiums (often $500–$1,500 annually) commonly apply even to very small payrolls.
Benchmarks are illustrative and not a quote. Your premium depends on your state, carrier, limits, and loss history.
What drives your premium
Class code
Every job duty is assigned a classification code that reflects its relative hazard. A roofer and a bookkeeper working for the same company will typically be rated on entirely different class codes, each carrying its own base rate per $100 of payroll.
Total payroll
Because premium is calculated per $100 of payroll, overall payroll size is one of the biggest drivers of cost. Carriers usually estimate payroll at policy inception and true it up at audit based on actual wages paid during the term.
Experience modification factor
Businesses with a claims history are compared against similar operations in their industry. A mod below 1.00 typically lowers premium, while a mod above 1.00, often driven by frequent or severe claims, usually increases it.
State and jurisdiction
Workers' comp is regulated state by state, so statutory benefit levels, medical cost trends, and bureau-approved rates vary considerably. Operating in multiple states often means multiple rating structures applying to the same workforce.
Claims history and frequency
Carriers look closely at recent loss runs, not just severity but frequency of claims. A pattern of smaller, repeated injuries can affect pricing and underwriting appetite as much as a single large claim.
Safety programs and workplace controls
Documented safety training, return-to-work programs, and equipment maintenance records often help demonstrate lower risk to underwriters, which can support more favorable pricing at renewal.
Business size and years in operation
Newer or smaller employers may face limited rating credibility and higher minimum premiums, while established businesses with several years of stable loss history often qualify for more competitive terms.
Examples by business size
| Business profile | Estimated annual premium |
|---|---|
Solo consultant, home office 1 employee, clerical class code, low payroll Often near carrier minimum premium regardless of payroll size. | $400 – $900 / yr |
Small retail shop 5 employees, light lifting, $200K payroll Moderate class code with typical mod near 1.00. | $1,500 – $4,000 / yr |
General contractor 10 employees, mixed trades, $600K payroll Blended class codes across office and field crews. | $12,000 – $30,000 / yr |
Roofing company 15 employees, $500K payroll, high-hazard class High base rate per $100 of payroll due to fall risk exposure. | $40,000 – $90,000+ / yr |
Ways to lower what you pay
Classify duties accurately
Making sure each employee is coded to the class that truly reflects their duties, rather than a default high-hazard code, can prevent overpaying. Payroll for clerical staff, for example, is often split out separately.
Invest in safety training
Documented, ongoing safety programs and near-miss reporting often reduce claim frequency over time, which can improve your experience mod at renewal and future audits.
Support injured workers with return-to-work programs
Offering modified duty so injured employees return sooner typically reduces claim duration and cost, which most carriers view favorably in future pricing.
Keep payroll estimates current
Providing accurate payroll projections helps avoid large true-up bills at audit and can prevent overpaying for coverage you did not use during the term.
Shop multiple carriers
Because appetite and pricing for the same class code can vary by carrier, comparing quotes through an independent agency often surfaces meaningful differences in premium.
Review your experience mod for errors
Mod calculations rely on reported payroll and loss data; periodically auditing this data with your agent can catch reporting errors that may be inflating your rate.
Frequently asked questions
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