| Business | Phone |
| Afl-Cio 227 Jefferson St, Jefferson City 65101 | (573) 634-2115 |
| American Federation-State Empl 3412 Knipp Dr # 102, Jefferson City 65109 | (573) 635-9145 |
| Brick Layers 209 Flora Dr, Jefferson City 65101 | (573) 636-8121 |
| Carpenters Local # 945 230 W Dunklin St # 104b, Jefferson City 65101 | (573) 636-5863 |
| Construction Industry Laborers 116 Commerce Dr, Jefferson City 65109 | (573) 893-2446 |
| Health & Social Svc Employees 1401 Southwest Blvd, Jefferson City 65109 | (573) 635-6823 |
| Ibew 209 Flora Dr, Jefferson City 65101 | (573) 635-2133 |
| Ibew 216 Flora Dr, Jefferson City 65101 | (573) 635-2596 |
| International Union-Oper Engrs 230 W Dunklin St # 206, Jefferson City 65101 | (573) 635-3160 |
| Joint Apprenticeship Committee 209 Alameda Dr, Jefferson City 65109 | (573) 556-6040 |
| United Transportation Union 222 Madison St # A, Jefferson City 65101 | (573) 634-3303 |
| Utu 507 Windee Ln, Jefferson City 65101 | (573) 634-7110 |
| Missouri State Building Cncl 109 E High St # 2a, Jefferson City 65101 | (573) 635-5214 |
| Missouri Afl Cio Jtpa 208 Madison St, Jefferson City 65101 | (573) 556-0742 |
| Missouri Federation Of Teacher 423 E High St, Jefferson City 65101 | (573) 635-0073 |
| Missouri Laborers' Lobbying 423 E High St # B, Jefferson City 65101 | (573) 632-9234 |