Washington
Workers’ Compensation Insurance

Nearly every employer in Washington must carry workers' comp coverage. There's no minimum employee threshold. If you hire even one worker, you need to register with L&I and begin paying premiums. This applies to full-time, part-time, and seasonal employees alike.

The requirement extends to most industries without exception. Construction, agriculture, retail, tech, hospitality: it doesn't matter. Washington takes a broad approach to mandatory coverage, and penalties for non-compliance are steep. Employers caught operating without coverage face fines, back-premium assessments, and personal liability for any workplace injuries that occur during the gap.

Requirements for Small Businesses and Contractors

Small businesses face the same obligations as large corporations. A landscaping company with two employees and a tech startup with fifty both register with L&I and pay quarterly premiums. There's no size-based exemption.

Independent contractors present a trickier situation. Washington has strict tests for determining whether a worker is truly independent or should be classified as an employee. If L&I determines you've misclassified employees as contractors, you'll owe back premiums plus penalties. Contractors who are legitimately self-employed can purchase optional coverage through L&I to protect themselves, which is something many Washington businesses should understand before hiring subcontractors.

Exemptions for Business Owners and Officers

Sole proprietors, partners, and LLC members aren't automatically covered under Washington's system. You can elect coverage for yourself, but it's optional. Corporate officers of S-corps and C-corps are covered by default, though they can file an exemption if they own at least 10% of the company.

Many small business owners skip their own coverage to save money. That's a gamble. If you're injured on a job site and you don't carry coverage on yourself, you're paying those medical bills and lost wages out of pocket. We've seen contractors with serious back injuries face six-figure medical costs with no safety net because they opted out.

When an injury happens, timing matters. Employers must report workplace injuries to L&I within specific timeframes, and employees should file a claim as soon as possible. L&I's online system makes filing straightforward, but the claims process itself can be complex.

The injured worker chooses their own doctor (within L&I's provider network), and L&I pays for approved medical treatment. Wage replacement benefits typically cover about 60-75% of the worker's pre-injury wages, depending on marital status and dependents. Claims can stay open for months or even years for serious injuries, and your experience rating is affected by every claim filed against your account.

One common mistake we see: employers failing to document incidents thoroughly. Keep detailed records of what happened, witness statements, and any safety measures already in place. This documentation protects you if a claim is disputed and helps L&I process things faster.

Your premium depends on three main factors: your risk classification, your payroll, and your claims history. L&I assigns every business a risk class based on the type of work performed. Each class has a base rate per hour worked, and rates are increasing for 2026 across most classifications.

Premiums are reported and paid quarterly. You'll report actual hours worked by employees in each risk class, and L&I calculates the amount due. Late payments trigger penalties and interest, so staying on top of quarterly filings is essential.

Understanding Risk Classes and Experience Factors

L&I maintains hundreds of risk classifications. An office worker falls under a very different class than a roofer. Base rates per hour can range from under $0.50 for low-risk office work to over $3.00 for high-hazard construction trades.

Your experience factor adjusts the base rate up or down based on your company's claims history compared to others in your classification. A clean claims record earns you a discount. Frequent or costly claims push your factor higher. This adjustment can swing your actual premium by 50% or more in either direction, making workplace safety programs a direct financial investment, not just a compliance exercise.

The Role of Employee Payroll Deductions

Washington splits workers' comp costs between employers and employees. The employer pays the "accident fund" portion, while employees contribute to the "medical aid" and "supplemental pension" portions through payroll deductions.

You're required to withhold the employee share from each paycheck. You can't absorb the employee portion as a benefit, and you can't charge employees more than the statutory rate. The 2026 rate adjustments affect both employer and employee shares, so update your payroll system accordingly at the start of the year.

Do I need workers' comp if I only have one employee? Yes. Washington has no minimum employee threshold. One employee triggers the requirement.

Can I buy workers' comp from a private insurance company in Washington? No. Washington is a monopolistic state fund. All coverage comes through L&I unless you qualify for self-insurance.

What happens if I don't carry coverage? L&I can fine you, assess back premiums with penalties, and hold you personally liable for any injury costs. Criminal charges are possible for willful non-compliance.

How do I lower my premiums? Reduce workplace injuries through safety programs, return injured workers to light duty quickly, and consider L&I's Retrospective Rating program if you qualify.

Are remote workers covered? Yes, if they're performing work duties. A home office injury during work hours can be a valid claim.

Do seasonal employees need coverage? Absolutely. Seasonal, part-time, and temporary workers all require coverage from day one.

Operating without workers' comp coverage in Washington isn't just risky: it's expensive. L&I conducts audits and responds to tips about uninsured employers. Penalties include back premiums for the entire uninsured period, a 50% penalty surcharge on those premiums, and potential criminal prosecution for repeat offenders.

If a worker is injured while you're uninsured, you're personally liable for all medical costs and wage replacement benefits. These costs can easily reach hundreds of thousands of dollars for a single serious injury. We've seen small contractors lose their businesses entirely over one uninsured claim.

L&I offers a Retrospective Rating program that lets groups of employers pool their experience to potentially earn premium refunds. If the group's actual claims costs come in below what was projected, members receive a partial refund. This program is particularly relevant as rates rise in 2026 and employers look for ways to offset increases.

Individual employers can also pursue the Stay at Work program, which reimburses you for 50% of the base wages you pay to injured workers in light-duty positions. These programs reward proactive claims management and can meaningfully reduce your net cost of coverage over time.

New employers should register with L&I before their first employee starts work. You can do this online through the state's business licensing system. You'll need your UBI number, business structure details, and a description of the work your employees perform.

Once registered, L&I assigns your risk classifications and provides your quarterly reporting schedule. Keep accurate time records by classification, especially if your employees perform multiple types of work. Misclassifying hours, even accidentally, can result in audit adjustments and penalties.

Workers' comp covers workplace injuries, but it doesn't cover everything. It won't pay for general liability claims from customers, professional errors, or property damage. Many Washington employers pair their L&I coverage with a general liability policy and, depending on the industry, professional liability or commercial auto insurance.

Think of workers' comp as one piece of your overall risk management strategy. A restaurant owner, for example, needs L&I coverage for a cook who burns themselves, general liability for a customer who slips on a wet floor, and possibly employment practices liability for HR-related claims. Each policy addresses a different exposure.

Washington's workers' comp system is straightforward once you understand the structure. You can't shop around for carriers, but you can control your costs through safety programs, proper claims management, and participation in discount programs like retro rating.

Register with L&I before hiring your first employee. Set up accurate payroll tracking by risk class. Budget for the 2026 rate increase, and build a workplace safety culture that keeps your experience factor low. These steps protect both your employees and your bottom line.

If you're unsure about your classifications or want help managing your L&I account, consider working with an insurance broker who specializes in Washington's system. While they can't sell you a different policy, experienced brokers can help you structure your account properly, identify cost-saving programs, and ensure you're not overpaying due to misclassification. Your workers deserve protection, and your business deserves a manageable premium.