Washington Business Insurance Requirements

Is business insurance required in Washington?

In Washington, state law mainly requires two kinds of business insurance:

• Workers' compensation, once you meet the state's employee rule: required with any employee; bought from the state fund (l&i).
• Commercial auto, for vehicles your business owns, because every vehicle on the road needs liability coverage.

Most other coverage is required by the people you do business with rather than by law:

• Commercial landlords typically require general liability and may require property coverage.
• Clients and general contractors often require general liability, additional insured status and proof of workers' comp.
• Licensed professions and trades may need insurance or a bond to get or renew a license; check with the board for your field.

General liability is generally not mandatory under Washington law, but most businesses that serve customers, visit job sites or rent space end up needing it.

Workers' compensation in Washington

Washington requires workers' compensation as soon as you have any employees. Washington is a monopolistic state: workers' comp comes from the state fund run by the Department of Labor & Industries (L&I), not from private insurers. (Some very large employers are approved to self-insure.)

What that means for a small business:

• You set up coverage through L&I, usually when you register your business and hire employees.
• Private policies usually exclude workers' comp in Washington. Talk to your agent about stop-gap employer's liability, which covers employee lawsuits that the state fund doesn't.
• L&I sets the rates. Premiums depend on your risk classification, so check L&I's rates rather than relying on national medians.

Owners without employees generally aren't required to cover themselves but may be able to opt in.

Compare Washington with other states in our workers' comp requirements by state table.

What else Washington business owners should know

• Contractor registration. Construction contractors in Washington generally must register with L&I, and registration commonly involves proof of liability insurance and a bond. Check current requirements with L&I before bidding on jobs.
• Out-of-state work. If employees work in other states, the Washington state fund may not cover that work. Ask your agent about coverage for out-of-state work.
• Tech and professional services. Contracts with larger tech companies often require professional liability (E&O) and cyber coverage.

Common coverage gaps for Washington businesses

• Assuming a personal policy covers business use. Home and personal auto policies often exclude business activity, equipment and vehicles used for work.
• Hiring before arranging workers' comp. Coverage needs to be in place when the employee who triggers the requirement starts, not after an injury.
• Missing contract wording. If a client asks to be an additional insured or wants a waiver of subrogation, your policy needs the matching endorsement before you start work.

How much does business insurance cost in Washington?

We don't publish a Washington-specific median, because reliable state-level price data isn't publicly available. What we can share are national medians. According to Insureon's 2026 data from 100,000 small-business customers (most with 1–4 employees):

Prices in Washington can be higher or lower than these figures. Your quote depends on your industry, payroll, revenue, number of employees, claims history, the limits and deductible you choose, and where in the state you operate. Riskier work costs more: Insureon's construction customers pay a median of $82 a month for general liability and $254 a month for workers' comp, compared with $29 and $40 for consultants. Use our business insurance cost calculator for a rough estimate, then get real quotes.

How to verify requirements and coverage in Washington

1. Check workers' comp rules with the state. The Washington State Department of Labor & Industries is the authority on who must carry coverage, exemptions and penalties.
2. Check your license. If your trade or profession is licensed in Washington, the licensing board can tell you whether proof of liability insurance, a bond or workers' comp is part of getting or renewing your license.
3. Read your contracts and lease. Clients, general contractors, venues and landlords set their own minimums, often $1 million per occurrence and $2 million aggregate for general liability, and may ask to be named as an additional insured.
4. Confirm the insurer is licensed. The Washington Office of the Insurance Commissioner regulates insurance companies and agents in Washington. Use it to check that an insurer or agent is licensed and to file a complaint.
5. Keep proof handy. Ask for a certificate of insurance (COI) as soon as your policy starts so you can send it to clients quickly.

Not sure which policies fit your business? Start with the guide for your profession or read about general liability insurance.