Practice and procedure before the commission shall comport with the model rules of procedure adopted by the chief administrative law judge pursuant to RCW 34.05.250, as now or hereafter amended. The model rules hereby adopted are found in chapter 10-08 WAC. Other procedural rules adopted in this title are supplementary to the model rules of procedure. In the case of a conflict between the model rules of procedure and the procedural rules adopted in this title, the procedural rules adopted in this title shall govern.

Certified officer proceedings before the commission are governed by chapter 139-06 WAC.