• Aetna
  • Cigna
  • Guardian
  • Lincoln Financial Group
  • MetLife
  • Delta Dental
  • Regence Blue Cross Blue Shield
  • Employees Painters Trust
  • Premera Blue Cross
  • Puget Sound Electrical Workers (PSEW)
  • International Union of Operating Engineers
  • International Brotherhood of Teamsters
  • International Brotherhood of Boilermakers
  • The United Food & Commercial Workers International Union (UFCW)
  • The International Union of Bricklayers and Allied Craftworkers (BAC)
  • Allied Metal Union
  • Plumbers & Pipefitters Union
  • International Woodworkers of America
  • The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers Union (AFL-CIO)
  • International Union of Elevator Constructors (IUEC)
  • United Brotherhood of Carpenters
  • International Brotherhood of Electrical Workers (IBEW)
  • Northwest International Association of Machinists (NW IAM)
  • Cement Masons Union
  • NW Laborers Union
  • Laborers Local 440: Street Pavers, Sewer, Watermain & Tunnel Workers
  • H.E.R.E.
  • Sheet Metal Workers’ International Association
  • United Health Care