| Business | Phone |
| American Postal Workers Union 200 Depot St, Monroe 71201 | (318) 322-6160 |
| Carpenter's Local Union 1811 111 Hudson Ln, Monroe 71201 | (318) 323-6835 |
| Electrical Workers Union 1601 Southern Ave, Monroe 71202 | (318) 323-3350 |
| Iron Workers 1601 Southern Ave, Monroe 71202 | (318) 388-0286 |
| Monroe Federation Of Teachers 2809 Evangeline St 1, Monroe 71201 | (318) 322-2442 |
| National Assn-Letter Carriers 813 Grammont St, Monroe 71201 | (318) 387-8021 |
| Plumbers & Steamfitters 1900 Pine St, Monroe 71201 | (318) 322-4520 |
| United Automobile Workers 170 Meadowlark Dr, Monroe 71203 | (318) 343-0660 |
| United Automobile Workers 1977 190 Meadowlake Dr, Monroe 71203 | (318) 343-6064 |