658.708—Hearings.
        
        (a) 
         Upon receipt of a hearing file by the Chief Administrative Law Judge, the case shall be docketed and notice sent by registered mail, return receipt requested, to the Solicitor of Labor, Attention: Associate Solicitor for Employment and Training, the Administrator, the Regional Administrator and the State Administrator. The notice shall set a time, place, and date for a hearing on the matter and shall advise the parties that:
    
    
    
    
    
    
        
        (b) 
         The Solicitor of Labor or the Solicitor's designee shall represent the Department at the hearing.