ADJ18308975 — California WCAB decision

What the panel ordered

Petition for Reconsideration denied; case dismissed with prejudice for lack of jurisdiction due to tribal sovereign immunity of employer and derivative immunity of insurance carrier.

Petition for Reconsideration filed by Applicant after WCJ Findings and Order dismissing case with prejudice for lack of jurisdiction over employer and insurance carrier; WCJ Report recommended denial of Petition; WCAB timely acted on Petition within 60 days of case transmission.

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What was disputed, and how it came out

Each issue the panel decided, with the reasoning it gave. An outcome is what this panel did on this record — not a rule, and not a prediction.

Jurisdiction / venueDefendant prevailed

The employer has sovereign immunity and is immune to the workers' compensation claim; the insurance company's liability is derivative of the employer's liability; therefore, the Appeals Board lacks jurisdiction over the insurance carrier as well.

From the decision · page 4II. Applicant only challenges the finding that the WCAB does not have jurisdiction over Tribal First/ Alliant Insurance. Applicant claims that Tribal First/ Alliant Insurance does not have sovereign immunity and therefore must provide applicant her worker' compensation benefits despite the sovereign immunity of the employer tribe. However, applicant misconstrues the issue as the sovereign immunity of the insurance company. Tribal First/ Alliant Insurance cannot be liable for applicant's workers' compensation benefits if the defendant employer is not liable. The employer here has sovereign immunity and is therefore immune to applicant's workers' compensation claim. (United Indian Health Services, Inc./Tribal First v. Workers' Comp. Appeals Bd. (2025) 111 Cal.App.5th 1064 [90 Cal.Comp.Cases 499].) An insurance company's liability is derivative of the liability of the employer. In other words, the insurance company is not responsible for providing workers' compensation benefits to an injured party if the employer itself is not responsible. The employer and its insurance company are treated as one in workers' compensation claims. (Lab.

The facts that decided it

What the panel treated as outcome-determinative, and which side it favoured.

The employer, Lake County Tribal Health Consortium, has tribal sovereign immunity.

Favours Defendant prevailed

This immunity bars the workers' compensation claim and deprives the Appeals Board of jurisdiction over the employer.

From the decision · page 4II. Applicant only challenges the finding that the WCAB does not have jurisdiction over Tribal First/ Alliant Insurance. Applicant claims that Tribal First/ Alliant Insurance does not have sovereign immunity and therefore must provide applicant her worker' compensation benefits despite the sovereign immunity of the employer tribe. However, applicant misconstrues the issue as the sovereign immunity of the insurance company. Tribal First/ Alliant Insurance cannot be liable for applicant's workers' compensation benefits if the defendant employer is not liable. The employer here has sovereign immunity and is therefore immune to applicant's workers' compensation claim. (United Indian Health Services, Inc./Tribal First v. Workers' Comp. Appeals Bd. (2025) 111 Cal.App.5th 1064 [90 Cal.Comp.Cases 499].) An insurance company's liability is derivative of the liability of the employer. In other words, the insurance company is not responsible for providing workers' compensation benefits to an injured party if the employer itself is not responsible. The employer and its insurance company are treated as one in workers' compensation claims. (Lab.

The insurance company, Tribal First/ Alliant Insurance, stands in the shoes of the employer and has derivative immunity.

Favours Defendant prevailed

Because the employer is immune, the insurance company is not liable and the Appeals Board lacks jurisdiction over it.

From the decision · page 4II. Applicant only challenges the finding that the WCAB does not have jurisdiction over Tribal First/ Alliant Insurance. Applicant claims that Tribal First/ Alliant Insurance does not have sovereign immunity and therefore must provide applicant her worker' compensation benefits despite the sovereign immunity of the employer tribe. However, applicant misconstrues the issue as the sovereign immunity of the insurance company. Tribal First/ Alliant Insurance cannot be liable for applicant's workers' compensation benefits if the defendant employer is not liable. The employer here has sovereign immunity and is therefore immune to applicant's workers' compensation claim. (United Indian Health Services, Inc./Tribal First v. Workers' Comp. Appeals Bd. (2025) 111 Cal.App.5th 1064 [90 Cal.Comp.Cases 499].) An insurance company's liability is derivative of the liability of the employer. In other words, the insurance company is not responsible for providing workers' compensation benefits to an injured party if the employer itself is not responsible. The employer and its insurance company are treated as one in workers' compensation claims. (Lab.

The rules the panel named

Authorities as the decision cited them, with how this panel applied each one.

Labor Code section 5909

A petition for reconsideration is deemed denied unless the Appeals Board acts on it within 60 days from the date a trial judge transmits a case to the Appeals Board.

The Appeals Board timely acted on the Petition for Reconsideration within 60 days of transmission on May 9, 2025, as this decision was issued on July 8, 2025.

From the decision · page 3Former Labor Code section 5909 provided that a petition for reconsideration was deemed denied unless the Appeals Board acted on the petition within 60 days from the date of filing. (Lab. Code, § 5909.) Effective July 2, 2024, Labor Code section 5909 was amended to state in relevant part that:

Labor Code section 3850(b)

An insurance company's liability is derivative of the employer's liability; the insurance company is not responsible for workers' compensation benefits if the employer is not liable.

The employer has sovereign immunity and is not liable; therefore, the insurance carrier is not liable and the Appeals Board lacks jurisdiction over it.

From the decision · page 4II. Applicant only challenges the finding that the WCAB does not have jurisdiction over Tribal First/ Alliant Insurance. Applicant claims that Tribal First/ Alliant Insurance does not have sovereign immunity and therefore must provide applicant her worker' compensation benefits despite the sovereign immunity of the employer tribe. However, applicant misconstrues the issue as the sovereign immunity of the insurance company. Tribal First/ Alliant Insurance cannot be liable for applicant's workers' compensation benefits if the defendant employer is not liable. The employer here has sovereign immunity and is therefore immune to applicant's workers' compensation claim. (United Indian Health Services, Inc./Tribal First v. Workers' Comp. Appeals Bd. (2025) 111 Cal.App.5th 1064 [90 Cal.Comp.Cases 499].) An insurance company's liability is derivative of the liability of the employer. In other words, the insurance company is not responsible for providing workers' compensation benefits to an injured party if the employer itself is not responsible. The employer and its insurance company are treated as one in workers' compensation claims. (Lab.

ADJ18308975 · July 8, 2025

What the panel ordered

What was disputed, and how it came out

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The facts that decided it

The rules the panel named

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