| Business | Phone |
| Carpenters 310 Mckinzie St S, Mankato 56001 | (507) 388-6031 |
| Education Minnesota 1600 E Madison Ave # 103, Mankato 56001 | (507) 345-7500 |
| Mankato Area Local-Apwu 851 Summit Ave, Mankato 56001 | (507) 345-1760 |
| Mankato Labor Temple Assoc 310 Mckinzie St S, Mankato 56001 | (507) 387-7768 |
| National Assn-Letter Carriers 401 S 2nd St, Mankato 56001 | (507) 345-8140 |
| Operating Engineers 308 Lundin Blvd, Mankato 56001 | (507) 625-3670 |
| Plumbers & Fitters Local 310 Mckinzie St S, Mankato 56001 | (507) 625-5126 |
| Teamsters Union 816 Southbend Ave, Mankato 56001 | (507) 387-1103 |
| Utu 604 S 4th St, Mankato 56001 | (507) 344-1998 |