This Notice of Employee Death (DIA 510) is a mandatory reporting form for employers to notify the California Division of Workers’ Compensation (DWC) about an employee’s death, regardless of cause. The report requires details such as employee identification, next of kin, job duties, date and place of death, and a description of circumstances leading to the fatality. If the death is work-related, employers must also report it to their workers’ compensation insurance carrier and Cal/OSHA.