| Business | Phone |
| Amalgamated Transit Union 3535 S Wilmington St, Raleigh 27603 | (919) 772-9696 |
| American Postal Workers Union 1 Floretta Pl, Raleigh 27676 | (919) 420-0995 |
| American Postal Workers Union 1129 Corporation Pkwy # 171, Raleigh 27610 | (919) 231-9094 |
| Contractors Network Of America 5301 Hillsborough St # 201, Raleigh 27606 | (919) 851-0484 |
| Transport Workers Union 8404 Six Forks Rd, Raleigh 27615 | (919) 676-3000 |
| Teamsters 6317 Angus Dr, Raleigh 27617 | (919) 787-0623 |
| Plumbers & Steamfitters Union 4510 Old Poole Rd, Raleigh 27610 | (919) 231-8005 |
| National Assn-Letter Carriers 3540 Maitland Dr, Raleigh 27610 | (919) 212-2413 |
| Nc State Aflcio 1408 Hillsborough St, Raleigh 27605 | (919) 833-6678 |
| Mail Handler Union 6008 Westgate Rd, Raleigh 27617 | (919) 420-0434 |