Employment Litigation · Primary-source case analysis

Kuciemba: Workers’ Compensation Exclusivity Did Not Bar a Spouse’s Claim, but No Take-Home COVID Duty Existed

By Aneeta Mishra and Timothy Chan

Published September 10, 2026

An employee allegedly contracted COVID-19 at work and transmitted it to his spouse, who became seriously ill. The Ninth Circuit asked the California Supreme Court whether workers’ compensation exclusivity barred the spouse's tort claims and whether the employer owed her a duty of care.

The spouse alleged an independent injury

The derivative-injury rule did not bar the claim merely because workplace exposure was part of the causal chain. The spouse sought recovery for her own illness, not damages legally dependent on the employee's compensable injury.

Foreseeability did not end the duty inquiry

Household transmission was foreseeable, but California duty analysis also considers the consequences of recognizing liability, the burden on defendants, and the availability and cost of insurance.

A general duty would create an unmanageable class

A duty to nonemployees could extend beyond household members to anyone infected through an employee, imposing uncertain and potentially enormous liability on employers and burdening courts with difficult transmission questions.

The no-duty holding was categorical for the alleged theory

The court concluded that employers do not owe a tort duty to prevent workplace COVID-19 spread to employees' household members. Exclusivity and duty remained distinct analytical questions.

Key takeaways

• Analyze workers’ compensation exclusivity before reaching ordinary tort elements.
• Distinguish a claimant's independent injury from damages derivative of an employee's injury.
• Evaluate duty using policy consequences as well as foreseeability.
• Do not assume that surviving exclusivity establishes a viable negligence claim.