Wash. Admin. Code § 390-37-132
A party desiring to take the deposition of any person upon oral examination shall give reasonable notice of not less than five business days in writing to the commission and all parties. The notice shall state the time and place for taking the deposition and the name and address of each person to be examined. On motion of a party to whom the notice is served, the commission or its hearing officer may, for cause shown, enlarge or shorten the time. If the parties so stipulate in writing, depositions may be taken at any time or place, upon any notice, and in any manner and when so taken may be used as other depositions.
Wash. Admin. Code § 390-37-132
Statutory Authority: RCW 42.17.370. 03-22-065, § 390-37-132, filed 11/4/03, effective 12/5/03; 91-16-072, § 390-37-132, filed 8/2/91, effective 9/2/91.