Workers’ Comp Rates Increased 4.9% in Washington: What It Means for Trucking Companies

The Washington State Department of Labor & Industries (L&I) adopted a 4.9% average increase in Workers’ Compensation premium rates, and the new rates have been in effect since January 1, 2026.

For trucking companies, where drivers and other employees face daily workplace risks, understanding what has already changed is important. The statewide 4.9% increase does not necessarily mean that every transportation company is paying exactly 4.9% more.

Workers’ Comp Rates Have Already Increased

The change is no longer a proposal or a future increase. Washington adopted the new rates in November 2025, and the 4.9% average premium rate increase took effect on January 1, 2026.

That means employers and workers in Washington are already paying under the new 2026 rate structure.

For trucking businesses planning their operating costs, Workers’ Compensation expenses should therefore be evaluated using the current 2026 rates, rather than the rates that applied in 2025.

The 4.9% Increase Is Not the Same for Every Company

One of the most important points is that 4.9% is a statewide average across industries. A trucking company should not assume that its individual Workers’ Compensation rate has increased by exactly 4.9%.

According to L&I, an employer’s actual rate can increase or decrease depending on factors including its recent claims history and changes in the frequency and cost of claims within its industry risk classification.

For a trucking company, the actual impact therefore depends on its own operation and risk profile.

How Much More Does the Increase Cost?

Under the rates now in effect, L&I estimates that the 2026 increase adds approximately $1.37 per week for each full-time position, on average.

That represents approximately $71 more per year per full-time employee, before retrospective refunds are considered.

For a company operating multiple trucks with several drivers and other employees, relatively small increases per worker can become a more significant annual operating expense.

Washington Calculates Workers’ Comp Differently

Washington’s Workers’ Compensation system has an important characteristic that distinguishes it from most other states.

While most states calculate premiums as a percentage of payroll, Washington Workers’ Compensation premiums are primarily based on the number of hours worked.

That distinction matters.

When wages increase in Washington, employer and worker contributions do not automatically increase simply because payroll has increased. This is one of the reasons L&I periodically adjusts hourly premium rates to account for the rising cost of providing coverage.

For trucking companies, where employee hours are a fundamental part of operations, understanding this system is particularly important.

Workers Also Pay Part of the Premium

Washington has another unusual feature: workers contribute directly to Workers’ Compensation premiums. Under the 2026 rates, employers continue to pay the majority of the premium, while workers pay a significant portion.

This means the rate increase that took effect in January affects both businesses and employees.

Claims History Can Change the Real Cost

For trucking companies, the statewide increase is only one part of the equation.

L&I establishes base rates according to different risk classifications, but an individual employer’s claims experience can also affect what it ultimately pays.

That means workplace safety, accident prevention, proper claims management, and accurate business classification can have financial consequences beyond the immediate cost of an accident.

A trucking company may therefore have experienced an increase that is higher or lower than the statewide 4.9% average.

Why Did Washington Increase the Rates?

L&I says the 2026 increase helps address the rising cost of providing Workers’ Compensation benefits when employees are injured on the job.

When establishing rates, the agency considers several factors, including expected Workers’ Compensation benefit costs, wage inflation, operating expenses, investment income, and other financial indicators.

The 4.9% increase already adopted for 2026 is actually lower than the amount L&I estimated would be necessary to fully cover expected 2026 claim costs.

The agency plans to use part of the Workers’ Compensation contingency reserve to cover the difference.

What Trucking Companies Should Review Now

Because the increase has already taken effect, Washington trucking companies should look beyond the statewide 4.9% figure.

They should ask:

What is our current risk classification?

How is our claims history affecting our current rate?

Are employee hours being reported correctly?

Is our trucking operation properly classified?

How much have our actual Workers’ Compensation costs changed since the new rates took effect?

Washington’s average Workers’ Compensation premium rate increased 4.9% for 2026, but that does not mean every company is paying 4.9% more. For trucking businesses, the most important number is not the statewide average. It is the rate their own operation is paying now.

Official Sources

• Washington State Department of Labor & Industries — Final 2026 Workers’ Compensation Rates
• Washington State Department of Labor & Industries — 2026 Workers’ Compensation Rate Announcement
• Washington State Department of Labor & Industries — Workers’ Compensation Rates and Risk Classes
• Washington State Department of Labor & Industries — 2026 Premium Rates Rulemaking