RCW 60.24.040: Period covered by labor liens.

The person rendering the service of [or] doing the work or labor named in RCW 60.24.020 and 60.24.030 is only entitled to the liens as provided herein for services, work or labor for the period of eight calendar months, or any part thereof next preceding the filing of the claim, as provided in *section 8 of this act.