Workers Compensation Insurance Requirements in Washington

At the federal level, there is no universal requirement for private employers to carry workers' compensation insurance. Instead, the federal government regulates workers' compensation indirectly through the Occupational Safety and Health Act (OSHA), 29 U.S.C. § 651 et seq., which requires employers to maintain a safe workplace. Workers' compensation is a state-mandated insurance system that exists in all 50 states, but each state sets its own rules.

The federal government directly operates the Federal Employees' Compensation Act (FECA), 5 U.S.C. § 8101 et seq., which covers federal civilian employees and operates similarly to state workers' compensation programs. FECA provides medical benefits, rehabilitation, and wage-replacement benefits for federal workers injured on the job. Additionally, the Longshore and Harbor Workers' Compensation Act (LHWCA), 33 U.S.C. § 901 et seq., covers maritime workers not protected by state programs.

The U.S. Department of Labor (DOL) enforces OSHA standards and oversees federal workers' compensation programs. However, state workers' compensation programs are largely self-administered by each state, meaning Washington's program operates independently with minimal federal oversight beyond OSHA compliance.

Washington's workers' compensation law is codified primarily in Title 51 of the Revised Code of Washington (RCW). RCW 51.08.010 establishes the core requirement: every employer in Washington with one or more employees must provide workers' compensation coverage or qualify for self-insurance. This applies regardless of the size of the business, making Washington one of the stricter jurisdictions in the nation.

Unlike some states that exempt very small employers, Washington has minimal exemptions. RCW 51.08.020 lists the few categories exempt from mandatory coverage: sole proprietors with no employees, partners without employees, corporate officers who have opted out in writing, and certain agricultural workers under specific conditions. Independent contractors are generally not covered unless specifically classified as employees.

Washington's state workers' compensation program is stronger than the federal baseline because it is mandatory, not optional. Federal law does not require private employers to carry workers' compensation; Washington law does. The state administers coverage through the Department of Labor & Industries (L&I), which sets premium rates and regulates all insurance carriers operating in the state.

Coverage in Washington includes: medical treatment (unlimited), temporary disability benefits, vocational rehabilitation, permanent disability awards, and death benefits for worker fatalities. The maximum weekly benefit for temporary disability is adjusted annually and was $1,539 per week as of 2024. Washington also provides a few additional protections beyond typical state programs: the state allows workers to receive benefits even if the injury was partially caused by the worker's own conduct, and employers cannot require employees to waive workers' compensation rights.

Washington's self-insurance option allows large employers (typically with net worth exceeding $1 million and strong financial records) to self-insure under RCW 51.16.100, meaning they pay claims directly rather than purchasing insurance. However, self-insured employers must maintain strict financial reserves and comply with L&I oversight.

RCW 51.08.020 establishes narrow exemptions from Washington's mandatory workers' compensation requirement. Sole proprietors operating a business with no employees are exempt, but hiring even one employee—whether full-time or part-time—triggers the mandate. Partners in a partnership are exempt only if the partnership has no employees; if partners employ others, coverage is required for all workers.

Corporate officers can opt out of coverage in writing under specific conditions, but this exemption is limited and the officer remains personally liable if injured. Family members employed in a family business may fall under exemptions in limited circumstances, but Washington law interprets these narrowly.

Independent contractors are generally exempt because they are not employees. However, Washington uses a strict ABC test to determine whether a worker is truly independent or misclassified. If a worker fails the ABC test—specifically if the employer controls the work, the worker performs work integral to the employer's business, or the worker is not free to perform similar work for competitors—the worker must be classified as an employee and covered by workers' compensation.

Agriculultural workers are covered under Washington's program with no exemption, unlike some states. Seasonal agricultural employees are fully covered. Employees of charitable organizations, religious institutions, and nonprofits are not exempt; they must be covered like any other employer's workers.

Common employer defenses to workers' compensation claims include: the injury did not arise out of or occur during employment, the worker did not sustain a compensable injury (defined broadly but excluding certain conditions like typical heart attacks or hernia unless caused by specific workplace event), willful misconduct by the worker in violation of safety rules, or the worker's injury predates employment. However, Washington law is employee-friendly and presumes injuries are work-related if they occur during employment. Intoxication by the worker is not a defense to coverage.

Step 1: Document Everything Immediately. If you are injured at work, report it to your supervisor or manager in writing on the same day if possible. Document the date, time, location, nature of the injury, and names of witnesses. Keep copies of any written incident reports, email confirmations, text messages, or statements you provide to management. Take photographs of the injury and the scene where it occurred if safe to do so. Save all medical records, prescriptions, diagnosis reports, and bills related to the injury. Maintain a personal log with dates, descriptions of your symptoms, medical appointments, and any work restrictions given by doctors.

Step 2: File an Internal Workplace Report. Provide your employer with written notice of the injury as soon as practicable—Washington law does not establish a strict deadline, but delays weaken your case. Ask your employer for the workers' compensation claim form (Form SRTP-1 or equivalent provided by L&I). Your employer is legally required to provide this form and submit it to their insurance carrier within 10 days of learning of the injury. Request a copy of the form for your records. Follow up in writing if your employer does not initiate the claims process within a reasonable time.

Step 3: File with the Department of Labor & Industries. If your employer fails to file a claim or denies your injury is covered, you can file directly with Washington's Department of Labor & Industries (L&I). The mailing address is Department of Labor & Industries, PO Box 44000, Olympia, WA 98504-4000. You can also file online at lni.wa.gov or by phone at 1-800-547-8367. Include your name, employer name, date of injury, description of the injury and how it occurred, and any medical evidence. The deadline to report an injury is generally within one year of the injury date, though you have up to five years to file a claim if you did not know the injury was work-related. There is no filing fee.

Step 4: Understand the Investigation and Approval Process. After L&I receives your claim, they assign a case manager who investigates whether the injury is compensable under RCW 51.08.010. The investigation typically takes 10-30 days. L&I will contact your employer, review medical records, and may interview you and witnesses. You will receive written notice of L&I's decision. If approved, your medical bills are paid directly by L&I or the insurance carrier, and you become eligible for disability benefits if you cannot work. If initially denied, you have the right to appeal within 60 days by filing a Notice of Appeal with L&I and requesting a formal hearing before a Workers' Compensation Judge.

Step 5: Consult an Employment or Workers' Compensation Attorney. You should speak with a workers' compensation attorney if: your claim is denied, your employer retaliates against you for filing, you disagree with the permanent disability rating assigned by L&I, you are offered a settlement and want to understand your rights, or your case involves a serious injury. In Washington, workers' compensation attorneys typically work on contingency (no upfront cost; they take a percentage of benefits won). Many Washington workers' compensation attorneys offer free initial consultations. Contact the Washington State Bar Association Lawyer Referral Service at 1-800-945-9722 or visit wsba.org to find a specialized attorney.