Washington Contractor Insurance Requirements
Washington State operates a unique industrial insurance system through the Department of Labor and Industries (L&I), which serves as the exclusive WC provider for most employers. Like Ohio and North Dakota, Washington is a monopolistic WC state. Washington also requires contractors to be registered with L&I and carry general liability insurance. The Washington State Department of Labor and Industries actively audits contractor compliance, and the Seattle metro area has some of the highest COI standards in the Pacific Northwest.
Washington COI Requirements at a Glance
The following table summarizes the minimum insurance requirements for contractors operating in Washington. Commercial property managers often require limits above state minimums.
| Coverage Type | Minimum / Status |
|---|---|
| General Liability (per occurrence) | $100,000 |
| General Liability (aggregate) | $200,000 |
| Workers' Compensation | Mandatory 1+ employees |
| Umbrella / Excess Liability | Commonly Required on Large Projects Common minimum: $1,000,000 |
| Additional Insured Endorsement | Commonly Required |
| Waiver of Subrogation | Commonly Required |
Coverage Notes
GL: Washington contractor registration requires $100K per occurrence minimum, but this is very low. Seattle and Bellevue commercial projects typically require $1M/$2M.
WC: RCW § 51.12.010 requires all employers with 1+ employees to subscribe to the Washington State Industrial Insurance fund (L&I). Washington is a monopolistic WC state — no private WC carriers are permitted except for self-insurance approved by L&I.
Umbrella: Required on state agency and large Seattle commercial projects. Tech industry facility contractors often require $2M–$5M excess.
Additional Insured: Standard in Seattle and Puget Sound commercial property management.
Waiver of Subrogation: Standard on Washington commercial construction contracts.
Washington-Specific Laws & Regulations
These laws directly affect how contractor insurance requirements are structured in Washington. Property managers should be familiar with these statutes when reviewing vendor COIs.
Washington Industrial Insurance Act (RCW § 51.12.010)
Mandatory WC through L&I for all employers. Washington is a monopolistic WC state. L&I policy numbers appear on WC section of Washington COIs.
Washington Contractor Registration (RCW § 18.27.020)
All contractors must be registered with L&I and carry GL insurance and a $12,000 surety bond. License suspension for insurance lapses is automatic.
Washington COI Frequently Asked Questions
Common questions from property managers and contractors about insurance requirements in Washington.
Do contractors in Washington State need workers' compensation?
Yes. Washington is a monopolistic WC state under RCW § 51.12.010. All employers must subscribe to the state's industrial insurance fund through L&I. Private WC carriers are not permitted except for self-insurance with L&I approval.
What is Washington L&I and how does it appear on COIs?
Washington's Department of Labor and Industries (L&I) administers the state's monopolistic workers' compensation system. When reviewing Washington COIs, the WC carrier should be listed as 'Washington State Department of Labor and Industries' or 'L&I.' Private WC carrier listings are non-compliant for Washington employees.
What are the minimum insurance requirements for Washington contractors?
Washington contractor registration requires just $100K GL minimum, but Seattle and Bellevue commercial property managers require $1M/$2M. Workers' compensation through L&I and a $12,000 surety bond are also required for contractor registration.
Does Washington require a surety bond in addition to insurance?
Yes. Washington requires registered contractors to maintain a $12,000 surety bond in addition to GL insurance. This bond must be maintained for a registration to remain active. Request bond documentation separately from the COI when hiring Washington contractors.
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