California Code, Labor Code - LAB § 1555

(a) If an employee has notified their employer that they would like their designated emergency contact to be notified in the event the employee is arrested or detained, the employer shall notify the designated emergency contact if the employee is arrested or detained on their worksite.  If the arrest or detention occurs during work hours, or during the performance of the employee's job duties, but not on the worksite, the employer shall notify the employee's designated emergency contact only if the employer has actual knowledge of the arrest or detention of the employee.

(b) An employer shall provide an employee the opportunity to name an emergency contact no later than March 30, 2026, for an existing employee, and at the time of hiring for a new employee hired after March 30, 2026.  The employer shall also allow an employee to provide updated emergency contact information through the duration of employment.  The employer shall allow the employee to indicate whether the emergency contact should be notified if the employee is arrested or detained on their worksite, or during work hours or during the performance of the employee's job duties, but not on the worksite, if the employer has actual knowledge of the arrest or detention of the employee.