| International Brotherhood of Teamsters | Related tax-exempt org | Representation of members | NY | 131739753 |
| Westchester Municipal Employees Welfare | Related tax-exempt org | Welfare benefits to participants | NY | 136804536 |
| Westchester Teamsters Pension Fund | Related tax-exempt org | To provide pension benefits to participants | NY | 136123973 |
| Teamsters Local 456 ED & Training Fund | Related tax-exempt org | To provide ED. & train. Classes to participants in the fund | NY | 133127233 |
| Teamsters Local 456 Legal Services BEN | Related tax-exempt org | To provide legal benefits | NY | 133133262 |
| Teamsters Local 456 PAC Fund | Related tax-exempt org | Political ORG. Who represent union labor | NY | 134135385 |
| Westchester Teamsters Annuity Fund | Related tax-exempt org | To provide annuity benefits to members | NY | 136889226 |
| Local 456-CIC-BCA Labor Management | Related tax-exempt org | Improve COMM. Between union & employers | NY | 453262099 |
| 5050 | Related partnership | — | — | — |
| ACP Trucking LLC | Related partnership | — | — | — |
| ACI Management Corp | Related partnership | — | — | — |
| AIM Carriers LLC | Related partnership | — | — | — |
| Airgas USA LLC | Related partnership | — | — | — |
| AJD Construction Services Corp | Related partnership | — | — | — |
| ALL CTY Mobile Concr Special | Related partnership | — | — | — |
| ALL-WELD Products Corp | Related partnership | — | — | — |
| Almeida FUEL OIL | Related partnership | — | — | — |
| Altar Enterprises | Related partnership | — | — | — |
| AMA Marinelli Constr INC | Related partnership | — | — | — |
| AMEC Commercial | Related partnership | — | — | — |
| American Tree & Landscaping | Related partnership | — | — | — |
| AMX Contracting Corp | Related partnership | — | — | — |
| A-Quick PICK Crane Service | Related partnership | — | — | — |
| Arben Group LLC | Related partnership | — | — | — |
| Arben Group LLC Building | Related partnership | — | — | — |