Washington Workers' Compensation: L&I State Fund, Hours-Based Premiums and 2026 Rates
Washington Workers' Compensation: L&I State Fund, Hours-Based Premiums and 2026 Rates
Washington workers compensation works differently from most states. Private insurers cannot write standard coverage for most employers. Instead, the Department of Labor and Industries (L&I) runs the state fund, and nearly every employer buys its coverage there. If you are hiring your first employee, adding a crew, or forming a business that will have workers, this guide explains who must carry coverage, how premiums are calculated, what the 2026 rates look like, and what L&I has proposed for 2027.
Informational content only. This guide is not legal, tax or insurance advice. Rates, penalty amounts and eligibility rules can change, so confirm current figures with L&I before you act, and consult a qualified attorney or CPA about your situation.
Who Must Carry Washington Workers Compensation
Under RCW 51.16.060, employers other than self-insurers must insure with the L&I state fund. Private carriers therefore cannot write standard workers' compensation policies in Washington. For most employers, the state fund is the only option. Self-insurance is the alternative for employers who qualify, and it involves its own approval process, so ask L&I about eligibility before you plan around it.
The insurance requirement applies to the workers you employ, but the rules for owners are different, and this is where many new business owners make mistakes. Sole proprietors and partners are excluded from mandatory coverage under RCW 51.12.020. Some corporate officers and LLC members are also exempt under that statute. An exemption is not automatic because you own the business, so confirm your status with L&I rather than assuming it applies.
Washington Workers Compensation Requirements
Most Washington workers compensation requirements come down to five steps. Work through them in order and confirm each one with L&I, because the agency handles coverage, reporting and contractor checks directly.
- Sort your workers into covered and excluded groups. Employees generally need coverage. Owners, partners and some officers or members may be excluded, as described above.
- Open an L&I industrial insurance account. This account is how you obtain coverage from the state fund. Start at lni.wa.gov and confirm the sign-up steps for your business type.
- Track hours by classification. Premiums are based on the hours your workers spend on each type of work, so keep time records that match what you report.
- Report hours every quarter. Quarterly reports are how L&I calculates what you owe. Missed or late reports carry penalties.
- Pay the premium L&I bills. Your share and your workers' share both follow the same reported hours, so accurate reports protect both sides.
Contractors have an extra step. Under RCW 18.27.030, you must show a workers' compensation account to register as a contractor. L&I handles that registration. The agency also licenses electrical and plumbing work, so trade businesses often deal with L&I on more than one front.
Your L&I account does not replace your state business registration. An LLC or corporation must file with the Secretary of State first. Businesses that need a Unified Business Identifier (UBI), a trade name or an endorsement go through the Department of Revenue's Business Licensing Service (BLS), which is a separate process. Keep the two sequences distinct when you plan your filings.
How Premiums Are Calculated: Hours, Not Payroll
Washington workers' compensation premiums are based on hours worked, not payroll dollars. That is the most important difference for budgeting. Two employers with the same hours in the same classification pay the same premium even if their payrolls differ. Your premium depends on the hours reported in each classification, and each classification carries its own rate.
The cost is shared. Employers pay about 75 percent of the premium, and workers pay about 25 percent. When you set wages and budgets, treat the premium as a cost tied to the hours your crew works, not as a percentage of what you pay.
2026 Rates and the Proposed 2027 Increase
The average Washington workers compensation premium rose 4.9 percent on January 1, 2026. For a full-time position, that works out to about $1.37 more a week.
On September 22, 2026, L&I proposed a further 4.9 percent increase for 2027, which would add about $1.44 a week per full-time position. A proposal is not a final rate. Check L&I for the adopted figure before you finalize a budget, because the number may change between proposal and adoption.
| Period | Average premium change | Approximate weekly change per full-time position | Status |
|---|---|---|---|
| January 1, 2026 | 4.9 percent increase | About $1.37 more a week | In effect |
| 2027 | 4.9 percent increase proposed | About $1.44 a week | Proposed September 22, 2026; confirm the adopted rate with L&I |
These figures are statewide averages. They are useful for planning, but they are not your bill. Your actual cost depends on your classifications, your hours and the rates in effect for each one. Ask L&I for the rate that applies to your work.
Quarterly Reporting, Late Filings and Penalties
Employers report hours each quarter. Those reports drive your premium, so errors can cost you money in either direction. Set up a recurring process to pull hours from payroll or timekeeping, check the classifications, and file on time. Waiting until year end to reconstruct hours is the easiest way to make mistakes.
Employers who fail to insure, or who file reports late, face penalties under chapter 51.48 RCW. This guide does not list those amounts because they are not confirmed here. Ask L&I for the current penalty schedule before you rely on any estimate.
Common Mistakes to Avoid
- Assuming every LLC member is exempt. Not every member qualifies under RCW 51.12.020, so confirm your status.
- Treating a sole proprietor or partner as excluded permanently. Coverage can be requested in writing before an injury under RCW 51.32.030.
- Shopping for private workers' comp quotes. Private carriers cannot write standard coverage for most employers, so comparing carriers wastes time.
- Budgeting from payroll. Premiums follow hours, so a payroll-based estimate can miss the mark.
- Treating the proposed 2027 figure as final. The rate is only final once L&I adopts it.
Before You Call L&I
Gather these items so the conversation is productive:
- Your business structure, whether an LLC, corporation, sole proprietorship or partnership.
- Your UBI number, if you have one, and any trade names you use.
- A list of job types and the hours each one requires, grouped by classification.
- Whether your work is contracting or trade work that requires registration.
- Any owners or officers who may qualify for exemption or who want to request coverage.
Coordinating With Your State and City Registrations
Workers' compensation is one piece of your setup. The Business License Application, filed with the Department of Revenue's Business Licensing Service at dor.wa.gov/open-business/apply-business-license, issues your 9-digit UBI and handles state and city endorsements. The processing fee is $50 to open a business, plus separate endorsement fees. Online applications take about 10 business days, and 2 to 3 weeks longer when city or state endorsements need approval. Mailed applications can take up to six weeks. Corporations and LLCs must file with the Secretary of State at ccfs.sos.wa.gov before submitting the Business License Application. The application is required if you plan to hire employees within 90 days.
Timing matters. If you plan to hire within 90 days, build the Business License Application and your L&I account into the same plan so coverage is in place before your first employee starts.
Questions to Confirm With L&I
- The adopted 2026 and 2027 rates for your classifications.
- Current penalty amounts under chapter 51.48 RCW.
- Whether your officers or LLC members qualify for exemption under RCW 51.12.020.
- Whether your business qualifies for self-insurance, and what that requires.
- How a sole proprietor or partner requests coverage in writing under RCW 51.32.030.
Where to Get Help
The Washington Small Business Development Center (Washington SBDC) at wsbdc.org offers business advising across the state. The U.S. Small Business Administration's Seattle district page is at sba.gov/district/seattle.
Workers' compensation decisions often intersect with ownership structure, contractor licensing and tax planning. Talk with a qualified attorney or CPA before you finalize how you will insure owners, partners or a mixed crew. This guide is informational and is not legal or tax advice.