Workers Comp Requirements by State: The Complete 50-State Guide

Most workers compensation guides answer the question with disclaimers instead of answers. This one does not. Below is the actual trigger structure by state - when coverage is required, which states have opt-outs, which have exclusive state funds, and what multi-state businesses need to do differently.

Workers comp requirements are set by state law and can change. The information below reflects laws in effect as of 2025. Consult a licensed broker or attorney before making coverage decisions.

How Workers Comp Requirements Work: The Threshold and Trigger System

Every state uses one of three threshold structures to determine when workers comp is required:

One-employee threshold. The most common. The moment you hire any employee - full-time, part-time, or seasonal - workers comp is required. Most states use this standard. Examples: California, New York, Illinois, Florida (non-construction), Colorado, Pennsylvania, Ohio (non-agricultural), Michigan, New Jersey, Connecticut.

Higher employee count threshold. A minority of states set the trigger above one employee, typically to give small businesses more flexibility. Examples:

• Alabama: 5 employees
• Arkansas: 3 employees (with exceptions)
• Georgia: 3 employees
• Mississippi: 5 employees
• Missouri: 5 employees for non-construction, 1 for construction
• South Carolina: 4 employees
• Tennessee: 5 employees

Industry-specific thresholds. Several states have different thresholds by industry. Florida requires workers comp at 1 employee for construction businesses and 4 employees for non-construction. Missouri requires it at 1 employee for construction and 5 for other industries.

In all states, independent contractors do not count toward employee thresholds - but worker misclassification is actively audited, and contractors who do not meet the legal definition of independent contractors will be reclassified as employees.

States With Exclusive State Funds

Four states have monopolistic workers compensation funds where private insurance is not available. Employers in these states must purchase workers comp directly from the state fund.

Ohio. Ohio Bureau of Workers' Compensation (BWC) is the exclusive workers comp provider for Ohio employers. Private market workers comp is not available. Ohio BWC sets rates by classification code, and employers can choose from several coverage programs including a group rating program that adjusts rates based on industry group experience.

North Dakota. North Dakota Workforce Safety and Insurance (WSI) is the exclusive state fund. Coverage must be purchased from WSI. North Dakota has some of the lowest workers comp rates in the country, partially because the exclusive fund structure eliminates insurer marketing costs and profit margin.

Washington. Washington State Department of Labor and Industries (L&I) is the exclusive provider. Washington uses a premium structure based on industry classification rates and hours worked rather than payroll, which is unusual nationally. Some employers may be able to self-insure with L&I approval.

Wyoming. Wyoming Department of Workforce Services handles workers comp exclusively. Wyoming has a specific opt-out provision for sole proprietors with no employees and farm/ranch workers, but for most employers, WDS is the only option.

Puerto Rico (U.S. territory): Also operates an exclusive state fund through the Puerto Rico State Insurance Fund.

If you have employees in any of these states, you must set up a separate account with that state's fund. Private market workers comp coverage does not satisfy the requirement.

States Where Workers Comp Is Optional for Certain Employers

Texas. Texas is the only state where private employers can completely opt out of the workers compensation system. This is not a small-business exemption - it applies to all private sector employers regardless of size. Employers who opt out (non-subscribers) lose key legal defenses including assumption of risk, fellow-servant rule, and contributory negligence. Non-subscribers face civil lawsuits from injured employees with no cap on damages. Government contractors in Texas must still carry workers comp.

Oklahoma. Oklahoma allows employers to opt out of the traditional workers comp system through the Employee Injury Benefit Act (EIBA), which allows employers to self-insure injury benefits with a qualified benefit plan. This is a real but less common opt-out than Texas. Most Oklahoma employers use traditional workers comp. The opt-out requires significant administrative infrastructure and is primarily used by large self-insured employers.

Employee Count Thresholds by State: Full Reference

The table below covers the most common structures. States with the same threshold are grouped.

1-employee threshold (workers comp required from first hire): California, New York, Illinois, New Jersey, Pennsylvania, Michigan, Connecticut, Massachusetts, Maryland, Virginia, Colorado, Minnesota, Wisconsin, Indiana, Kentucky, Kansas (for most employers), Nebraska, Iowa, Nevada, Oregon, Idaho, Montana, Vermont, New Hampshire, Maine, Rhode Island, Hawaii, Alaska, Delaware, Arizona, New Mexico, Utah, North Carolina, District of Columbia, Florida (construction only), Missouri (construction only), and most other states not listed separately below.

3-employee threshold: Arkansas (general; 1 for businesses in specific industries including construction).

4-employee threshold: Florida (non-construction); South Carolina.

5-employee threshold: Alabama, Georgia (general industries), Mississippi, Tennessee, Missouri (non-construction).

Agricultural exemptions: Many states exempt agricultural employers at varying thresholds, often 5 to 10 agricultural employees. Agricultural workers are the most commonly exempted category nationally.

Domestic workers: Household employees (cleaners, nannies, caregivers) are often covered under separate provisions or excluded in some states. New York requires domestic employer coverage for workers employed 40+ hours per week; California requires it for household employees.

Sole proprietors and partners: In most states, sole proprietors and partners are not automatic employees of their own business and are not required to cover themselves. They can typically elect to include themselves for an additional premium. Corporate officers may be required to be covered unless they elect to opt out within specified limits.

What Happens If You Operate in Multiple States

Multi-state operations create a workers comp complexity that single-state guides do not address. Here is how the system works.

Primary state coverage. Workers comp is primarily governed by the state where the employee primarily works. An employee based in Texas and working full-time in Texas is a Texas workers comp matter.

Other states coverage. Your workers comp policy includes a section called "other states" or "Part Three" that extends coverage to other states where employees may occasionally work. This is important for businesses that have employees who travel between states or temporarily work on projects in other states.

Exclusive state funds. If you have employees in Ohio, North Dakota, Washington, or Wyoming, you must separately set up coverage with those states' funds. "Other states" coverage on your primary policy does not substitute for the exclusive state fund requirement.

True multi-state employers. If you have a physical presence and permanent employees in multiple states, you typically need to list each state on your workers comp policy's coverage declarations. The rate for each state's employees applies based on that state's classification codes and rates.

Certificates and compliance. If you work as a subcontractor in multiple states and clients require certificates of workers comp coverage, your policy needs to explicitly cover the states listed on the certificate. A Texas policy's "other states" section typically covers occasional work in most states except the four exclusive fund states.

When using a marketplace to get workers comp quotes for multi-state operations, disclose all states where you have employees or regularly perform work. Failure to disclose a state can result in claim denials if an injury occurs in an undisclosed state.

What Happens If You Operate Without Required Workers Comp

The consequences of non-compliance vary by state but are consistently serious.

Civil penalties. Most states assess fines per day or per period of non-compliance. Examples: New York ($2,000 per 10-day period), Illinois ($500 per day), Colorado ($500 per day), California (up to $100,000 in penalties plus stop-work order costs).

Stop-work orders. Most states can issue immediate stop-work orders requiring the business to halt operations until workers comp is secured. For a contractor mid-project, a stop-work order can mean losing the contract entirely.

Criminal liability. Several states classify workers comp non-compliance as a criminal offense. Illinois (Class A misdemeanor or Class 4 felony for repeat violations), California (misdemeanor or felony depending on circumstances), New York (misdemeanor).

Direct liability for injury costs. If an employee is injured during the period of non-coverage, the employer is directly liable for all workers comp benefits that would have been paid - medical care, temporary disability, permanent disability awards - plus potential civil lawsuit costs if the employee sues outside the workers comp system.

Officer and director personal liability. Some states can hold individual officers and directors personally responsible for workers comp premium owed by a non-compliant corporation.

Frequently Asked Questions

Does workers comp cover independent contractors? No. Workers comp covers employees, not independent contractors. However, worker classification is actively audited, and incorrectly classified contractors can be reclassified as employees, triggering retroactive premium obligations and potential penalties. The standard for classification varies by state; some use the IRS common law test, others use their own state-specific criteria.

If I'm in Texas and opt out, what do I need instead? You need a plan for responding to workplace injuries without workers comp. Some Texas non-subscribers purchase occupational accident insurance (which covers medical expenses and disability benefits but differs from workers comp in scope and benefit levels). You also need to understand that your exposure to civil lawsuits from injured employees is substantially higher as a non-subscriber, so most non-subscriber companies maintain high-limit general liability as a partial backstop.

Can I use the same workers comp policy for all my states? For most states, yes - a policy with appropriate "other states" endorsements can cover employees in most states. For Ohio, North Dakota, Washington, and Wyoming, you must additionally register with those state funds. A competent commercial broker can structure the coverage to minimize gaps.

How do states enforce workers comp requirements? Most states audit employer compliance through payroll records, business license databases, contractor verification programs, and inspection of active job sites. Workers comp auditors can visit workplaces. Some states cross-reference contractor licensing databases to identify unlicensed or uninsured businesses. An injury that triggers a claim to an injured worker will reveal non-compliance immediately.

What is the difference between "monopolistic state fund" and "competitive state fund"? A monopolistic state fund is the only legal source of workers comp in that state - Ohio, North Dakota, Washington, Wyoming. A competitive state fund (like California's SCIF, Colorado's Pinnacol Assurance, or New York's NYSIF) competes with private market carriers for workers comp business. In competitive fund states, you choose between the state fund and private carriers.