Industrial Contractors Skanska is signatory to 12 building trade unions.

• International Brotherhood of Electrical Workers
• International Union of Operating Engineers
• United Union of Roofers, Waterproofers and Allied Workers Association
• United Association of Journeymen and Apprentices of the Plumbers and Pipefitters Industry of the United States and Canada
• International Brotherhood of Boilermakers
• Laborers International Union of North America
• Plasterers and Cement Masons
• United Brotherhood of Carpenters
• Joiners and Millwrights of America
• International Association of Bridge and Reinforcing Iron Workers
• Teamsters International Union
• Sheet Metal Workers International Association