Wash. Admin. Code § 296-133-300
Typewritten memoranda of authority or appeal briefs shall be filed in the office of the director by the respective parties to the appeal thirty days following the filing of the notice of appeal. Any party to the appeal filing an appeal brief may request that a hearing of oral arguments upon the appeal be held before the director. Parties to the appeal not filing an appeal brief will not be granted oral hearing of arguments before the director nor permitted to present oral arguments to the director at any hearing that may be held for the presentation of arguments on appeal. The time and place for hearing oral arguments, when requested, will be fixed at the expiration of the time for filing briefs and notice of any such hearing will be sent to all parties to the appeal.
Wash. Admin. Code § 296-133-300
Order 72-13, § 296-133-300, filed 7/31/72.