The workers comp insurance cost for a typical small business runs about $94 per month, or roughly $1,128 per year, for each employee, though the real number swings widely by trade and location. Priced another way, the national average sits near $1.03 per $100 of payroll in 2025. That single figure hides a lot, because a bookkeeper and a roofer working for the same company are priced on completely different scales. This guide breaks down how the price is built, what pushes it up or down, and where an owner can trim it without cutting corners on coverage.
Every state except Texas requires most employers to carry this coverage once they hire staff, so the question is rarely whether to buy it. The real question is how the premium is calculated and whether the number on your renewal is fair. For a broader view of how this line item fits your total spend, compare it against your other policies in our guide to business insurance cost.
Workers compensation pays medical bills and replaces part of a worker’s wages after a job-related injury, and in exchange the employer is generally shielded from injury lawsuits. That trade-off is why the coverage is mandatory and why regulators watch its pricing closely.
One thing worth setting straight up front: the premium you are quoted is an estimate, not a fixed price. Carriers price the policy on projected payroll, then reconcile it against your actual payroll at the end of the term. That means the number can move after you sign, up or down, based on how the year plays out. Understanding the moving parts helps you predict where the audit will land and avoid an unwelcome surprise.
What Workers Comp Costs on Average
Nationally, the average premium lands around $1.03 per $100 of payroll in 2025, and some agency datasets cite a figure closer to $0.95 per $100. Translated into a monthly bill, many small employers pay about $94 per month for each covered worker, which works out to roughly $1,128 per year. Those averages are useful as a sanity check, but they blur together a graphic designer and a framing carpenter, so treat them as a starting point rather than a quote. The Insurance Information Institute, known as the III, publishes broad premium context that lines up with these ranges.
A cleaner way to think about it is share of payroll. For most small firms, workers comp lands somewhere between 0.5% and 5% of total payroll. Low-risk offices sit near the bottom of that band. High-risk trades such as roofing and logging sit near the top, and a few can exceed it. The Insurance Information Institute reports on these patterns each year, and the U.S. Small Business Administration, or SBA, lists workers comp among the core policies most employers must budget for from day one.
Averages also drift over time. Rates in many states have softened over the past several years as workplace injury frequency declined, while a handful of states moved the other direction. That is why a five-year-old cost estimate can mislead you today.
It also helps to separate the sticker price from the value. A $1,128 annual premium per worker sounds like pure overhead until you compare it to the cost of a single lost-time injury. A back strain or a fall can generate tens of thousands of dollars in medical care and wage replacement, plus the productivity you lose while the role sits empty. Viewed that way, the average premium is small relative to the exposure it removes, which is part of why regulators require it and why lenders and clients often demand proof of coverage before they will work with you.
How the Workers Comp Insurance Cost Is Calculated
Three inputs set the price, and once you see them the renewal stops looking like a mystery. The core formula is simple: take your annual payroll, divide it by 100, multiply by the class-code rate, then multiply by your experience modification factor. Written out, it looks like this: (payroll divided by 100) times class rate times experience mod equals base premium. State fees and assessments are added on top.
Here is a worked example. Suppose a small firm has $100,000 in clerical payroll and a clerical rate of $0.25 per $100. Divide $100,000 by 100 to get 1,000 units, multiply by $0.25, and you get a $250 base premium before any modifier or state fee. Now swap in a carpentry crew at $21.04 per $100 on the same payroll, and the base jumps to $21,040. Same wages, wildly different price, purely because of the risk attached to the job.
The class code is the first lever. The National Council on Compensation Insurance, or NCCI, and several independent state bureaus assign a numeric code to each type of work and publish a base rate for it. Clerical office staff carry code 8810; residential carpentry carries code 5645. Insurers use these codes so that similar risks are priced alike across carriers.
The experience modification factor is the second lever, and it personalizes the price to your own record. A value of 1.00 is the industry average. Below 1.00 is a credit, which lowers the bill. Above 1.00 is a debit, which raises it. NCCI builds this modifier from three years of your prior loss data, and it weights claim frequency more heavily than claim size, because frequent small claims signal weak safety habits.
The payroll figure is the third lever. Premiums are estimated on projected payroll at the start of the policy, then trued up with an audit at the end. If you overstate payroll, you overpay until the audit refunds you. If you understate it, expect a bill.
State assessments and fees round out the total. Many states tack on a percentage-based surcharge that funds guaranty associations, second-injury funds, or administrative costs, and these get added after the base premium and modifier. They are usually small relative to the base, but they explain why the final invoice rarely matches a back-of-the-envelope estimate to the penny. Your agent can show you the line-item breakdown so you can see exactly where each dollar goes.
Average Cost Per Employee and Per $100 of Payroll
The per-employee view and the per-$100 view are two ways of reading the same math. Per employee, the typical range for a small business is a few hundred dollars a year for a desk worker to several thousand dollars for a skilled tradesperson. Per $100 of payroll, that same spread shows up as a rate somewhere between about $0.25 and more than $20, depending entirely on the job classification and the state.
Consider the mechanics one more way. A single clerical employee earning $35,000 in a low-rate state might cost under $100 per year to insure. Move that same salary into a high-hazard code and the annual cost can climb into the thousands. This is why headcount alone tells you very little; the mix of roles and wages drives the total. The U.S. Department of Labor, or DOL, tracks the wage-replacement side of these programs and shows how benefit levels differ across jurisdictions.
- Desk and administrative roles: often 0.2% to 0.5% of payroll.
- Retail and light service: commonly 1% to 3% of payroll.
- Skilled trades and construction: frequently 5% to well above 20% of payroll.
Because the audit trues the number up, your final cost also reflects overtime, bonuses, and any subcontractors you failed to document. Clean payroll records protect you here.
How Much Workers Comp Costs by State
Location matters as much as occupation, because each state sets its own benefit rules, medical fee schedules, and rate-approval process. The spread is large. Rates run as low as roughly $0.68 per $100 of payroll in Virginia and climb past $2.15 per $100 in Alaska. Two identical roofing crews, one in a cheap state and one in an expensive state, can face premiums that differ by more than double.
California is a well-known high-cost example. Its insurance commissioner set an advisory pure premium rate of $1.52 per $100 of payroll for policies starting after September 1, 2025, an increase of 8.7% over the prior benchmark. That advisory figure is not a mandatory price, but it signals the direction carriers tend to follow. The National Association of Insurance Commissioners, or NAIC, coordinates the state regulators who approve these rates and publishes market data that lets you compare states on a consistent basis.
State systems also differ in structure. A handful run a competitive market with many private carriers, some operate a state fund that competes with private insurers, and a few use a monopolistic state fund where you must buy from the state. Knowing which model your state uses tells you how much shopping around can actually help.
| Example state | Approximate rate per $100 payroll |
|---|---|
| Virginia (low) | about $0.68 |
| National average | about $1.03 |
| California (advisory) | about $1.52 |
| Alaska (high) | over $2.15 |
What Drives Your Premium Up or Down
Once the class code and state are fixed, a short list of factors decides whether your bill sits at the low or high end of the range. Your claims history is the single biggest personal factor, because it feeds directly into the experience modification factor. A clean three-year record earns a credit; a string of claims earns a debit that can add double-digit percentages to the premium.
Payroll size matters too, since premium scales with wages. Growing headcount or handing out raises raises the base, even if your rate per $100 stays flat. Industry risk is baked into the class code, but the way you actually run the workplace still moves the needle through the modifier. A warehouse that trains lift operators and fixes hazards will out-price a competitor that does neither.
Correct classification is a quiet but powerful factor. If a mostly clerical employee is coded as a field worker by mistake, you pay a field-worker rate on office wages. The Occupational Safety and Health Administration, or OSHA, does not set your premium, but its injury and illness data underpins how bureaus judge the hazard of each trade, and a strong OSHA-aligned safety record supports a lower modifier over time.
Other levers include the deductible you choose, whether you bundle coverage, and how quickly you get injured staff back to suitable duty. Each one nudges the final number.
Timing plays a role too. The experience modification factor is recalculated every year using a rolling three-year window, so a bad claim year keeps affecting your price long after the injury heals. The flip side is encouraging: three consecutive clean years steadily rebuild a credit. Owners who treat safety as a one-time project miss this, while those who make it routine watch their modifier drift below 1.00 and stay there. Consistency, not intensity, is what the formula rewards.
Cost Examples by Industry
Nothing makes the pricing clearer than side-by-side trades on the same $100 of payroll. The rates below are illustrative national ranges; your real quote depends on your state and your own record, but the relative spread holds almost everywhere.
- Clerical and office (code 8810): around $0.25 per $100 of payroll. A back-office team is the cheapest common class to insure.
- Retail and food service: restaurants commonly run about $2 to $6 per $100 of payroll, reflecting burns, slips, and knife injuries.
- General construction and roofing: frequently $5 to $40 per $100 of payroll, with roofing near the top because of fall exposure.
- Residential carpentry (code 5645): around $21.04 per $100 of payroll, nearly 84 times the clerical rate on identical wages.
Put those numbers on a $500,000 payroll and the gap is stark. Clerical work at $0.25 per $100 produces a $1,250 base premium. Carpentry at $21.04 per $100 on the same payroll produces a base premium above $100,000. The lesson is that adding one high-risk role to a low-risk business changes the economics far more than adding several desk jobs.
This is also why accurate job descriptions matter at audit. Splitting payroll correctly between codes, when your state and policy allow it, keeps you from paying the roofing rate on the office manager’s salary.
Seasonal and mixed businesses feel this most. A landscaping firm might carry a low-rate office code for its schedulers and a high-rate grounds code for its crews, and the ratio between the two changes as the season shifts. If the policy assumes a summer-heavy mix all year, the audit can produce a refund; if it assumes a winter-light mix during a busy stretch, the audit produces a bill. Keeping payroll records that map cleanly to each class code is the single best protection against an audit dispute, and it costs nothing but discipline.
Contractors face an extra wrinkle. If you hire subcontractors who cannot show their own workers comp certificate, your carrier can fold their pay into your audited payroll, taxing you for coverage you thought you were avoiding. Collecting a valid certificate of insurance from every sub before they start work keeps those wages off your bill.
Ways to Lower Your Workers Comp Cost
You cannot rewrite the base rate for your trade, but you control several inputs that decide where you land inside the range. The highest-return move is usually cutting claim frequency, because that is what improves your experience modification factor and compounds year after year. A few disciplined habits move the number more than shopping carriers ever will.
Start with the fundamentals and work down the list:
- Audit your class codes. Make sure every worker sits in the correct classification, and split payroll between codes where your state permits it. A single miscoded role can inflate a premium by thousands of dollars a year.
- Build a real safety program. Regular training, hazard fixes, and documented procedures reduce injury frequency. OSHA offers free consultation resources that help small employers close hazards before they become claims.
- Run a return-to-work plan. Bringing injured staff back to light duty shortens claims and lowers their impact on your modifier.
- Report and manage claims fast. Early reporting and active claim handling keep small injuries from ballooning into large, mod-damaging losses.
- Consider a deductible. A per-claim deductible can lower the premium if your cash flow can absorb small losses.
- Verify payroll estimates. Accurate projections avoid a painful audit bill and keep you from floating the carrier an interest-free overpayment.
Shopping the market still helps, especially in competitive states, but do it after the housekeeping above. A clean record and correct codes make every quote you collect cheaper. As you compare policies, weigh workers comp beside your other required coverage, such as your general liability insurance cost, and review the full bundle in our roundup of the best small business insurance options.
Who Sets the Rules and Where the Data Lives
It helps to know which organizations shape the price so you can check figures against a neutral source rather than a sales pitch. Rate-making itself is a mix of private data analysis and public oversight. NCCI and the independent state rating bureaus collect loss data, calculate class-code rates, and compute each employer’s experience modification factor. State insurance departments then review and approve the rates carriers may use, which is why the same trade costs different amounts across state lines.
For neutral reference points, several public bodies matter. The NAIC aggregates market data across all fifty states and lets regulators and buyers compare pricing on a consistent basis. The DOL administers federal workers comp programs and reports on wage-replacement benefits, giving context for how generous a state’s benefits are. OSHA supplies the injury and illness statistics that inform how hazardous each occupation is judged to be. The III interprets industry trends for a general audience, and the SBA points small employers to the coverage they are legally required to carry.
Cross-checking a quote against these sources is a quick sanity test. If a broker quotes you a rate far above the typical band for your class code and state, the published data gives you the leverage to ask why. That is the difference between accepting a number and understanding it.
Frequently Asked Questions
Is workers comp insurance cost based on the number of employees?
Not directly. The premium is based on payroll, not headcount. The formula divides your annual payroll by 100, multiplies by the class-code rate, and then applies your experience modification factor. Two employers with the same number of workers can pay very different premiums if their wages, job classifications, or claims histories differ. That is why a five-person roofing crew often costs far more to insure than a twenty-person office.
How can a small business lower its workers comp premium?
The most durable savings come from fewer claims, because claim frequency drives the experience modification factor that NCCI calculates from three years of data. Correct class codes, a documented safety program aligned with OSHA guidance, a return-to-work plan, and accurate payroll estimates all help. A per-claim deductible can trim the premium if your business can absorb minor losses. Shopping carriers matters too, but it delivers the most value after your codes and safety record are already in good shape.
Why is workers comp so much more expensive in some states?
Each state sets its own benefit levels, medical fee schedules, and rate-approval rules, so identical work is priced differently across borders. Rates range from roughly $0.68 per $100 of payroll in a low-cost state such as Virginia to more than $2.15 per $100 in Alaska. Regulators coordinated through the NAIC approve these rates, and the DOL tracks how benefit levels vary, which is why geography can move your premium as much as your industry does.
Workers comp pricing looks complicated from the outside, but it comes down to three numbers you can influence: your payroll, your class code, and your experience mod. Get those right, keep injuries rare, and the cost usually settles at the fair end of the range for your trade.
