Workers' compensation insurance is the most state-regulated coverage in U.S. business insurance. Every state has its own rules about who needs coverage, when, and what exemptions apply. This 2026 guide explains workers compensation by state — what triggers the requirement, common exemptions, average costs, and where to buy coverage.
What Workers Compensation Insurance Covers
Workers' comp is a no-fault insurance system that covers employees who are injured or become ill on the job. It pays for:
• Medical treatment.
• A portion of lost wages while recovering.
• Disability benefits if the injury is permanent.
• Death benefits to dependents in fatal cases.
In exchange for these guaranteed benefits, employees give up the right to sue their employer for negligence.
Which States Require Workers Compensation?
All 50 U.S. states except Texas require most employers to carry workers' comp insurance. Even Texas employers who opt out lose key legal protections and remain liable for employee injuries. Requirements typically kick in based on the number of employees:
• 1 employee: Required in CA, AK, AR, IL, IA, KY, MD, NE, NJ, NY, NC, OK, OR, SD, UT, VT, WV, WY.
• 3+ employees: FL, GA, MI, MN, NM, RI, SC, VA, WI.
• 4+ employees: AL, MO, NH, ND, ME, OH, PA.
• 5+ employees: MS, TN.
Common Workers Comp Exemptions
Most states exempt certain workers from coverage requirements:
• Sole proprietors and partners — can usually opt out (but often choose to opt in for personal protection).
• LLC members — usually exempt unless they elect coverage.
• Independent contractors — exempt if they truly meet IRS contractor criteria.
• Domestic and casual workers — exempt in most states.
• Agricultural workers — partial exemptions in many states.
Misclassifying employees as contractors is a major audit risk.
How Workers Compensation Premiums Are Calculated
Workers' comp premiums use a simple formula:
Premium = (Payroll ÷ $100) × Class Code Rate × Experience Modifier
Class codes (NCCI codes) are assigned based on job risk — a clerical worker (Code 8810) might cost $0.30 per $100 of payroll, while a roofer (Code 5551) might cost $40+ per $100 of payroll. Your experience mod (X-Mod) starts at 1.0 and adjusts based on your claims history.
Average Cost of Workers Compensation in 2026
Across U.S. industries, the average cost of workers' comp is about $0.86 per $100 of payroll — roughly 0.86% of total wages. For a small business with $200,000 in payroll, that is around $1,720 per year. High-risk industries like construction can pay 5-10x more, while low-risk office businesses pay much less.
Where to Buy Workers Compensation Coverage
Four main sources:
1. Private insurance carriers: Travelers, The Hartford, Liberty Mutual, Hiscox, NEXT.
2. State funds: Some states (CA, NY, OH) have a state-run "fund of last resort" or "competitive fund."
3. Self-insurance: Large employers can apply to self-insure, but the bond and reserve requirements are substantial.
4. Professional Employer Organizations (PEOs): PEOs like ADP TotalSource, Justworks, and Insperity provide workers' comp as part of HR outsourcing.
Penalties for Not Carrying Workers Comp
Operating without required workers' comp coverage triggers serious penalties: state fines (up to $100,000 in some states), personal liability for employee injuries, criminal charges in extreme cases, and the inability to bid on contracts requiring proof of insurance. The cost of compliance is always less than the cost of getting caught.