- National Electrical Contractors Association
- Sheet Metal and Air Conditioning Contractors National Association
- Colorado Association of Mechanical and Plumbing Contractors
- Greater Metro Denver Ministerial Alliance
- Western Slope Colorado Construction Careers Alliance
- Colorado Alliance of Retired American’s Education Foundation
- A Stronger Cord
- Collbran Job Corps
- Colorado AFL-CIO
- Denver Area Labor Federation
- Boilermakers Local 101
- Brick, Marble, Stone, Tile & Terrazzo Workers Local 7
- International Union of Painters and Allied Trades District Council 15
- Carpet, Linoleum and Resilient Tile Layers Local 419
- Glaziers, Architectural Metal and Glass Workers Local 930
- Painters & Drywall Finishers Local 79
- Electricians IBEW Local 12
- Electricians IBEW Local 68
- Electricians IBEW Local 113
- Electricians IBEW Local 969
- Elevators Constructors Local 25
- Heat & Frost Insulators Local 28
- Iron Workers Local 24
- Laborers ‘ International Union of North America
- Laborers Local 720
- Operation Engineers/International Union of Operating Engineers Local 9
- Operative Plasterers and Cement Masons International Association Local 577
- Plumbers & Gas Fitters Local 3
- Plumbers & Pipefitters Local 58
- Plumbers & Pipefitters Local 145
- Pipefitters Local 208
- Rocky Mountain Pipe Trades District Council #5
- Reinforcing Iron Workers Local 847
- Roofers/United Union of Roofers, Water Proofers & Allied Workers
- Sheet Metal Workers/Sheet Metal Workers International Association Local 9
- Sprinklerfitters/Road Sprinklerfitters Local 669
- Teamsters/International Brotherhood of Teamsters Local 455
- Pueblo Electrical Joint Apprenticeship and Training Trust
- Denver Joint Electrical Apprenticeship Training Committee
- Colorado Finishing Trades Institute-IUPAT
- Colorado Sheet Metal Workers Apprenticeship and Training Institute
- Colorado Laborers and Contractors Education and Training
- Boilmakers Western State JATC
- Colorado Statewide Plasterers and Cement Masons JATC
- Colorado Journeyman and Apprenticeship Fund for Operating Engineers
- Denver Pipefitters Apprenticeship Program
- Colorado Statewide Ironworkers Joint Apprenticeship
- Western Slope Joint Apprenticeship and Journeyman Training
- Southern Colorado Roofers JATC