Wash. Admin. Code § 296-135-040
(1) An employee may choose to take any of the following types of leave under these rules:
(2) An employee may choose to take leave, whether unpaid or paid, in any manner as follows:
[Statutory Authority: Chapter 49.76 RCW and 2008 c 286. WSR 10-14-099, § 296-135-040, filed 7/6/10, effective 9/1/10.]