(1) For purposes of this title, "common paymaster" or "common pay agent" means an independent third party who contracts with, and represents, two or more employers, and who files a combined tax report for those employers.
(2) Common paymaster combined tax reporting is prohibited. "Common paymaster" does not meet the definition of a joint account under RCW 50.24.170.
(3) A common pay agent or common paymaster is not an employer as defined in RCW 50.04.080 or an employing unit as defined in RCW 50.04.090.