Washington Revised Code Title 49. Labor Regulations § 49.66.120. Arbitrator--Compensation--Expenses

The arbitrator so selected by the parties shall be paid at the daily rate or rates not to exceed the usual or customary rates paid to arbitrators in addition to travel expenses at the rates provided in RCW 43.03.050 and 43.03.060 as now existing or hereafter amended. Such sums together with all expenses of the hearing shall be borne equally by the parties to the arbitration proceedings.