Vacated. Plaintiff, the heir of an employee who was killed in a work place accident, filed a complaint alleging that the employer did not have workers compensation insurance. The employer filed a demurrer and sought adjudication with the Workers Compensation Board. The trial court stayed the civil case to allow the WCAB to decide the issue. The Appeals court held that when a civil action and a workers’ compensation proceeding are concurrently pending, the tribunal first assuming jurisdiction should have exclusive jurisdiction. The trial court erred by staying the civil case and the WCAB erred by proceeding without deference to the trial court. Order staying civil case is vacated and WCAB proceedings stayed.