Wash. Admin. Code § 194-14-240
Every decision of the appeals board shall:
(5) Whenever practical, the conclusions of law shall include the reason or reasons for the particular order or remedy afforded.
A copy of the order shall be delivered or mailed to each party or his designated representative, and to any person readily identifiable by the appeals board as one who is aggrieved by such order.
[Order 1, § 194-14-240, filed 1/18/77.]