General Government
- Service Employees International Union (SEIU) 1199 NW
- Coalition
- International Federation of Professional and Technical Engineers (IFPTE) Local 17
- Teamsters Local 117
- United Food and Commercial Workers (UFCW) Local 21
- Washington Association of Fish and Wildlife Professionals
- Washington Federation of State Employees (WFSE) - General Government
- Washington Public Employees Association (WPEA) - General Government
Higher Education
- Public School Employees - Western Washington University
- WFSE - Higher Education
- WPEA - Higher Education
Washington State Ferries
- Ferry Agents, Supervisors and Project Administrators Association (FASPAA)
- Inlandboatmen's Union of the Pacific (IBU)
- Marine Engineer Beneficial Association (MEBA) Licensed Engineer Officers
- MEBA Unlicensed Engine Room Employees
- Metal Trades Unions
- Masters, Mates and Pilots (MM&P) Deck Officers
- MM&P Marine Operations Watch Supervisors
- Office and Professional Employees International Union (OPEIU) Local 8
- SEIU Local 6
Washington State Patrol
- Washington State Patrol Lieutenants Association (WSPLA)
(no 2009-2011 agreement - 2007-2009 contract terms and conditions remain in force) - Washington State Patrol Troopers Association (WSPTA)
- WSPTA Summary of changes to 2009-2011 Agreement
Other
- Adult Family Home Providers - Washington State Residential Care Council
- Child Care Workers - SEIU Local 925
- Home Care Workers - SEIU Local 775
Important: Updates may be added at the end of each contract under the heading of MOU (Memorandum of Understanding).