| A&H Steel LLC 396 FKA a-H Steel Erectors | Related taxable corporation/trust | Contributing employer | MO | — |
| AACT - Advanced Crane Technicians INC 396 | Related taxable corporation/trust | Contributing employer | IL | — |
| ACME Constructors INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| ACME Erectors INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Alberici Constructors INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| American Bridge Company 396 | Related taxable corporation/trust | Contributing employer | PA | — |
| American IRON 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| ARCH City Ironworks 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Associated General Contractors 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Barnhart Crane & Rigging 396 | Related taxable corporation/trust | Contributing employer | TN | — |
| BEN HUR Construction CO 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| BHI Energy Speciality Services 396 | Related taxable corporation/trust | Contributing employer | SC | — |
| Big Boy's Steel Erection INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Brandt Contracting INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Brockmiller Construction Company 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Brothers Glass & Glazing LLC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Building Erection Services CO 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Chesley Commercial Fence & RAIL 396 | Related taxable corporation/trust | Contributing employer | IL | — |
| Collins & Hermann INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Concrete Strategies 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Cooper Creek Ironworks INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| D & S Fencing Company INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| D&K Welding Services INC 396 | Related taxable corporation/trust | Contributing employer | MO | — |
| Enclos Corp 396 | Related taxable corporation/trust | Contributing employer | CA | — |
| Federal Steel & Erection CO 396 | Related taxable corporation/trust | Contributing employer | IL | — |