Washington Revised Code Title 49. Labor Regulations § 49.52.020. Lien of party rendering service

In case any employer collecting moneys from his or her employees or making contributions to any type of benefit plan for any or all of the purposes specified in RCW 49.52.010, shall enter into a contract or arrangement with any hospital association, corporation, firm, or individual, to furnish any such service to its employees, the association, corporation, firm, or individual contracting to furnish such services, shall have a lien upon such trust fund prior to all other liens except taxes.  The lien hereby created shall attach from the date of the arrangement or contract to furnish such services and may be foreclosed in the manner provided by law for the foreclosure of other liens on personal property.