• Service Employees Union
  974 Santa Rosa St
• San Luis Obispo Cnty Employees
  865 Santa Rosa St
• Plumbers & Steamfitters Union
  3710 Broad St
• National Assn-Letter Carriers
  1026 Chorro St
• Ibew
  6363 Edna Rd
• Electrical Workers Health
  6363 Edna Rd