Workers Comp Insurance: Who Needs It and What It Costs
Workers comp insurance explained: state requirements (including the Texas opt-out), how premiums are priced per $100 of payroll, contractors and audits.
Quick answer: Workers comp insurance pays medical bills and lost wages for employees injured on the job and protects the employer from most related lawsuits. Nearly every state requires it once you hire, with Texas the main exception, where private employers may opt out. Premiums are priced per $100 of payroll, based on each job's class code and your claims history.
Workers' compensation is often the first insurance a growing small business is legally required to carry. It is also one of the most confusing: rules are set by each state, rates depend on job classifications, and the bill is adjusted after the policy year by an audit. This guide covers who needs workers comp insurance, how premiums are calculated with a worked example, how contractors fit in, and how to avoid the mistakes that lead to fines and surprise audit bills.
What is workers compensation insurance?
Workers' compensation is a no-fault system created by state law. When an employee is injured or becomes ill because of their job, the policy pays for medical care, a portion of lost wages, rehabilitation and, in the worst cases, death benefits to dependents. In exchange, the employee generally gives up the right to sue the employer for negligence. This trade-off is called the exclusive remedy rule.
A standard policy has two parts:
- Part One, workers' compensation: pays the benefits required by your state's law, with no dollar limit other than what the law sets.
- Part Two, employer's liability: covers lawsuits that fall outside the exclusive remedy rule, such as a claim from an injured worker's spouse, up to stated limits (often $100,000 / $500,000 / $100,000 on a basic policy).
Federal employees, longshore and harbor workers, and some other groups are covered by federal programs instead, but private small businesses deal with their state system.
Who needs workers comp insurance?
Each state decides who must carry coverage. The rules usually turn on how many employees you have, your industry, and whether workers are employees or independent contractors.
| Situation | Typical rule |
|---|---|
| Employer with one or more employees | Required in many states from the first employee |
| Small employers in some states | Thresholds of 3, 4 or 5 employees apply in some states (for example, Georgia starts at 3, Florida at 4 for non-construction businesses, Alabama at 5) |
| Construction | Often required with a single employee, even in states with higher thresholds for other industries (Florida is one example) |
| Texas private employers | Coverage is optional; employers that opt out are "nonsubscribers" and must file a notice with the Texas Department of Insurance and notify employees |
| Sole proprietor with no employees | Usually not required for the owner, though clients may require it |
| Independent contractors | Not your employees if properly classified, but misclassified workers can be treated as employees |
Thresholds change and include exceptions for farm labor, domestic workers and corporate officers, so confirm the rules on your state workers' compensation agency's website. Texas nonsubscribers lose the exclusive remedy protection, which means injured employees can sue and the employer loses certain defenses, so opting out is a risk decision rather than a free saving.
Where you buy coverage: private insurers, state funds and monopolistic states
In most states, you buy workers comp from private insurers, through an agent or online broker, or from a competitive state fund. Four states, North Dakota, Ohio, Washington and Wyoming, run monopolistic state funds, where employers must buy coverage from the state rather than a private insurer. Businesses that cannot find coverage in the voluntary market can usually get it through their state's assigned risk plan, typically at a higher price.
How much does workers comp insurance cost?
Workers' comp premiums are calculated from payroll, not from a flat price. The basic formula is:
Premium = (Payroll / 100) x Class code rate x Experience modification factor, then adjusted for schedule credits or debits, premium discounts, state assessments and minimum premiums.
- Class code: each type of work has a code, assigned by NCCI in most states or by a state bureau in others. Clerical office employees (code 8810 in NCCI states) carry a very low rate, while roofing, framing and tree trimming carry very high rates.
- Rate per $100 of payroll: set by the insurer, starting from benchmarks published by the rating bureau.
- Experience mod: once your premium is large enough to qualify, your claims history is compared with similar businesses. A mod of 0.85 lowers your premium 15%; a mod of 1.20 raises it 20%.
Benchmark rates from state regulators (2026)
| State | 2026 benchmark | What it means |
|---|---|---|
| California | Average advisory pure premium of $1.65 per $100 of payroll, for policies effective on or after September 1, 2026 | A benchmark for expected losses only; insurers add expenses and set their own rates |
| Washington | L&I adopted a 4.9% average increase in workers' comp rates for 2026 | Washington is a monopolistic state, so employers pay the state fund |
| Small business median (all states) | Insureon reports a median of $54 per month for workers' comp bought through its platform (as of February 2026) | Skews toward very small, lower-risk employers |
Sources: California Department of Insurance, Washington L&I and Insureon, as of October 2026. Your actual rate depends on your class codes, so an office-based company may pay a fraction of these averages while a roofing company may pay many times more.
Worked example: calculating a workers comp premium
A small landscaping company has two kinds of employees: an office manager earning $48,000 a year and three field workers with combined payroll of $126,000. The rates below are illustrative, chosen to show the math, not quotes for any state.
| Class | Payroll | Illustrative rate per $100 | Manual premium |
|---|---|---|---|
| Clerical office (8810) | $48,000 | $0.15 | $72 |
| Landscape gardening (field) | $126,000 | $4.20 | $5,292 |
| Total manual premium | $174,000 | $5,364 | |
| Experience mod 0.92 | $4,934.88 | ||
| State assessments and fees (illustrative) | $150 | ||
| Estimated annual premium | $5,084.88 |
Notice the cost of misclassification. If the office manager were coded as a field worker, the premium for that $48,000 would jump from $72 to $2,016. Keep job descriptions and payroll records split by class so the auditor can see the difference. If you run payroll yourself, our guide to doing payroll yourself shows how to keep those records clean.
Workers comp and independent contractors
Independent contractors are not covered by your policy, because they are not your employees. Two problems come up often:
- Misclassification: if a worker is really an employee under your state's test, the state can treat them as uninsured employees, with penalties. Our comparison of W-2 employees vs 1099 contractors covers the main tests.
- Uninsured subcontractors: at audit, insurers commonly add the payroll of uninsured subcontractors to your premium, because if their workers are injured on your job, your policy may end up paying. Always collect a current certificate of insurance before a subcontractor starts work and keep it with their invoice and W-9.
When a subcontractor invoices you, check the dates on their certificate against the dates of the work. Our construction subcontractor invoice template includes fields for this.
How to get workers comp coverage: step by step
- Confirm whether your state requires it and whether you are in a monopolistic state.
- Gather payroll estimates for the next 12 months, split by job type.
- Identify class codes with your agent; ask why each code was chosen.
- Decide on owner coverage: include or exclude yourself, as your state allows.
- Get quotes from an agent, an online broker, your state fund and, if relevant, your payroll provider's pay-as-you-go program.
- Post required notices at your workplace, as most states require.
- Set up an injury reporting process so claims are reported within your insurer's and state's deadlines.
- Prepare for the audit by keeping payroll reports, Form 941 filings and subcontractor certificates organized.
What does workers comp cover?
Benefits are set by state law, so the details differ, but most states pay the same categories:
| Benefit | What it pays |
|---|---|
| Medical care | Doctor visits, hospital care, surgery, prescriptions and therapy related to the work injury, usually with no deductible for the employee |
| Temporary disability | A share of lost wages, often around two-thirds of average weekly wages up to a state maximum, after a short waiting period |
| Permanent disability | Payments for lasting impairment, based on state schedules |
| Vocational rehabilitation | Retraining or job placement help when a worker cannot return to the old job |
| Death benefits | Funeral costs and income benefits to dependents |
Coverage applies to injuries and illnesses that arise out of and in the course of employment: a fall from a ladder, a back injury from lifting, repetitive strain, or an occupational illness. It generally does not cover injuries from intoxication, intentional self-injury, horseplay outside job duties or a normal commute, though states draw these lines differently.
How does a workers comp claim work?
- The employee reports the injury to you, ideally the same day. States set deadlines for both the worker and the employer.
- You arrange medical care and give the employee the state's claim form if required.
- You report the claim to your insurer (or state fund) within its deadline, using the first report of injury form.
- The insurer investigates and accepts or denies the claim, then pays medical providers and wage benefits directly.
- You plan return to work, including light or modified duty where possible, which lowers claim costs.
Do not pay a work injury out of pocket to avoid a claim. It can break state rules, leave the worker without benefits if the injury worsens, and still end up as a claim later with less documentation.
Pay-as-you-go workers comp
Many insurers and payroll providers offer pay-as-you-go billing, where the premium is calculated from actual payroll each pay period instead of a large deposit based on an estimate. It improves cash flow for seasonal businesses and shrinks the year-end audit adjustment. It works best when your payroll software tags each employee with the right class code. Your quarterly Form 941 filings and annual Form W-2 totals are what an auditor can compare against, so keep them consistent with the payroll you report to the insurer.
Common workers comp mistakes
- Waiting until after the first hire. Coverage should start the day the employee starts.
- Wrong class codes. Too high costs money; too low leads to back-premium at audit.
- Underestimating payroll to get a lower deposit, then facing a large audit bill.
- Ignoring overtime rules. In many states, the premium portion of overtime pay is excluded from rated payroll, but only if your records show it separately.
- No certificates from subcontractors, which turns their payroll into yours at audit.
- Delaying injury reports, which raises claim costs and can hurt your experience mod.
Budgeting for workers comp alongside payroll taxes
Workers' comp is one of several costs on top of wages. Add it to the employer share of FICA, federal and state unemployment taxes, and benefits when you price your services. Our guides to employer payroll taxes and hiring your first employee show the full cost of an employee, and our overview of small business insurance covers the other policies you are likely to need.
If you pass insurance costs to customers, build them into your rates rather than adding a surprise surcharge. Contractors working on large jobs sometimes list project-specific coverage, such as an owner-required policy or a wrap-up program credit, as its own line. You can set up a reusable layout for that in our free invoice generator.
This article is general information, not legal or insurance advice. Workers' comp rules are set by each state, so confirm requirements with your state agency or a licensed agent.
Workers comp insurance is a legal requirement for most employers and a real safety net for your team. Get the class codes right, keep clean payroll records and collect certificates from subcontractors, and the annual audit becomes routine. When you bill clients for the work your crew does, our free invoice generator needs no sign-up and downloads a PDF invoice built right in your browser.
Frequently asked questions
Do I need workers comp if I only have one employee?
In many states, yes. Several states require coverage from the first employee, while others start at three, four or five employees, and construction often has lower thresholds than other industries. Part-time workers usually count toward the total. Check your state workers' compensation agency's website before your first hire, because penalties for operating without required coverage can include fines, stop-work orders and personal liability for injury costs.
Does workers comp cover the business owner?
It depends on the business structure and the state. Sole proprietors and partners are often excluded by default but can usually elect coverage for themselves. Corporate officers and LLC members may be included automatically with an option to exclude themselves, subject to state rules. Owners in physically risky trades often choose to be covered, and some general contractors require it before letting you work on their sites.
What is a workers comp premium audit?
Because your premium is based on estimated payroll, the insurer checks actual payroll after the policy year ends. An auditor reviews payroll records, tax forms such as Form 941, job duties by class code and payments to subcontractors. If actual payroll was higher than estimated, you owe additional premium; if lower, you get a refund or credit. Keeping payroll split by class code and certificates for subcontractors makes audits smoother.
Is workers comp the same as disability insurance?
No. Workers' comp covers injuries and illnesses that arise from work, regardless of fault. Disability insurance covers income loss from injuries or illnesses that happen outside work. A handful of states, such as California, New York and New Jersey, also require or run short-term disability programs for non-work conditions, which are separate from workers' comp and have their own payroll deductions or premiums.
Can an employee sue me if I have workers comp?
Generally, workers' comp is the exclusive remedy for workplace injuries, meaning the employee receives benefits without proving fault and in return usually cannot sue the employer for negligence. There are exceptions, such as intentional harm, and some states allow suits in specific situations. Employer's liability coverage, Part Two of a standard workers' comp policy, helps defend claims that fall outside the exclusive remedy rule.
How do I lower my workers comp premium?
Classify employees correctly so clerical staff are not rated as field workers, run a written safety program, report injuries quickly and return injured workers to light duty when possible, which helps your experience mod over time. Collect certificates from subcontractors so their payroll is not added at audit. Pay-as-you-go billing does not lower the rate, but it keeps cash flow smoother and reduces audit surprises.
Is workers comp tax deductible?
Yes, workers' compensation premiums paid by a business for its employees are generally deductible as an ordinary and necessary business expense. Benefits received by an injured worker under a workers' compensation act are generally not taxable income to that worker. Premiums you pay for coverage on yourself as an owner may be treated differently depending on your entity, so confirm with a tax professional.
What happens if I am caught without workers comp?
Consequences vary by state but can be severe: fines that may be calculated per day or per employee, stop-work orders that shut down a job site, criminal charges in some states, and personal liability for an injured worker's medical bills and lost wages. Some states also bar uninsured employers from public contracts. If you discover a gap, contact an agent or your state fund immediately.
Invoice Creator Editorial Team
Guides on invoicing, cash flow and small-business finance from Invoice Creator, operated by Next Software Development Company. Content is reviewed for accuracy against the fields our own invoice generator produces.
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