| Business | Phone |
| American Postal Workers Union Newark 19711 | (302) 369-9773 |
| Iam District Lodge 19 38 Sentry Ln, Newark 19711 | (302) 737-5258 |
| Ibew 18 Peddlers Row, Newark 19702 | (302) 453-1238 |
| New Castle County Education 4135 Ogletown Stanton Rd, Newark 19713 | (302) 453-4050 |
| Oil Chemical & Atomic Workers 25 S Old Baltimore Pike, Newark 19702 | (302) 737-8898 |
| Uaw-Chrysler Region 698 Old Baltimore Pike, Newark 19702 | (302) 738-3308 |
| United Food & Commercial Wrkrs 1501 Casho Mill Rd # 107, Newark 19711 | (302) 292-6670 |
| United Telephone Workers Of De 350 Gooding Dr, Newark 19702 | (302) 737-0400 |
| Delaware State Education Assn 4135 Ogletown Stanton Rd, Newark 19713 | (302) 366-8440 |