California Workers' Compensation Liens and Third‑Party Claims: What Employers and Employees Need to Know

What Is a California Workers' Compensation Lien?

A workers' compensation lien is a legal claim that allows a medical provider, attorney, or other service provider who has paid or is owed money for a worker's injury to secure payment from the workers' compensation insurance carrier. In California, liens are governed by the Workers' Compensation Act and the California Code of Regulations (CCR) § 5300–5305.

How Third‑Party Claims Intersect With Workers' Compensation Liens

When an injury also involves a third party—such as a vehicle collision or a defective product—the injured employee may pursue a third‑party claim against the responsible party's insurance. In California, the workers' compensation system is the first line of defense, and third‑party claims are considered after the workers' comp benefit is paid. Liens can therefore be satisfied by the settlement proceeds from a third‑party claim, but the timing and priority can be complex.

Priority Rules

California follows a strict priority order for lien satisfaction:

• Workers' compensation insurance carrier (first priority)
• Third‑party insurance carrier (second priority)
• Medical liens (third priority)
• Attorney's lien (fourth priority)

Because the workers' comp carrier has first priority, a lien holder must wait for the workers' compensation payment before filing a third‑party claim. However, if the third‑party settlement is large enough, it can cover the lien and potentially provide additional compensation to the employee.

Filing a Workers' Compensation Lien in California

To file a lien, the claimant must follow these steps:

• Submit a Notice of Lien (Form WC 150) within 30 days of the injury or within 90 days of the last medical service, whichever is sooner.
• Provide supporting documentation: receipts, invoices, and a detailed description of services rendered.
• File the notice with the California Department of Industrial Relations (DIR) and the employer's workers' compensation carrier.

Failure to file within the statutory period can result in loss of lien rights.

Interaction With Third‑Party Settlements

When a third‑party settlement is reached, the following steps typically occur:

• The third‑party insurer pays the settlement to the employee.
• The employee's attorney reviews the settlement for lien satisfaction.
• Liens are paid in the priority order outlined above.

Because the workers' compensation carrier has first priority, the lien holder may need to negotiate with the third‑party insurer or the employee's attorney to ensure timely payment. In some cases, the employee may choose to let the settlement pay the lien in full to avoid delays in receiving the benefit.

Practical Tips for Employees

• Keep all medical bills and receipts in a secure folder.
• Notify your employer's workers' compensation carrier of any third‑party claims early.
• Ask your attorney to review the settlement before signing to confirm lien satisfaction.

Practical Tips for Employers

• Maintain accurate records of all medical service providers and their invoices.
• Work with the workers' compensation carrier to verify lien status before processing payments.
• Encourage employees to report third‑party claims promptly.

Key Takeaway

In California, workers' compensation liens and third‑party claims operate on a strict priority system. Understanding this hierarchy and filing deadlines is essential for both employees and employers to ensure fair and timely compensation.