| IBT Local Union 191 | Related tax-exempt org | Representation of union members | CT | 060453477 |
| TRI State Joint Fund | Related tax-exempt org | 3rd party administrator for affiliated entities | CT | 060850110 |
| Burns Construction | Related taxable corporation/trust | — | CT | — |
| City Carting | Related taxable corporation/trust | — | CT | — |
| Deering Construction INC | Related taxable corporation/trust | — | CT | — |
| FGB Construction | Related taxable corporation/trust | — | CT | — |
| First Student | Related taxable corporation/trust | — | OH | — |
| Grocery Haulers | Related taxable corporation/trust | — | NJ | — |
| HI-HO CONN COKE & FUEL CO | Related taxable corporation/trust | — | CT | — |
| Interstate & Lakeland Lumber Corp | Related taxable corporation/trust | — | CT | — |
| Marshalls Express INC | Related taxable corporation/trust | — | CT | — |
| Nationwide Janitorial SERV INC | Related taxable corporation/trust | — | MO | — |
| O&G Industries | Related taxable corporation/trust | — | CT | — |
| Petroleum HEAT & Power | Related taxable corporation/trust | — | RI | — |
| Petro-Home OIL | Related taxable corporation/trust | — | CT | — |
| Stony Brook Gardens | Related taxable corporation/trust | — | CT | — |
| Student Trans of America | Related taxable corporation/trust | — | NJ | — |
| Teamsters Local Union 1150 | Related taxable corporation/trust | — | CT | — |
| United Parcel Service | Related taxable corporation/trust | — | OH | — |
| Waters Construction CO INC | Related taxable corporation/trust | — | CT | — |
| We Transport | Related taxable corporation/trust | — | CT | — |
| YRC INC | Related taxable corporation/trust | — | KS | — |
| Sportech Enterprises | Related taxable corporation/trust | — | CT | — |
| Meyer Rigging | Related taxable corporation/trust | — | CT | — |
| DEL-VA Corporation | Related taxable corporation/trust | — | CT | — |