| Business | Phone |
| Carborundum Local 110 24th St, Niagara Falls 14303 | (716) 284-6250 |
| Ibew 8803 Niagara Falls Blvd, Niagara Falls 14304 | (716) 297-3899 |
| Iron Workers Local 412 39th St, Niagara Falls 14303 | (716) 285-5738 |
| Laborers 2556 Seneca Ave, Niagara Falls 14305 | (716) 297-6441 |
| Laborers' Local 91 Educational 2556 Seneca Ave, Niagara Falls 14305 | (716) 297-4722 |
| Niagara Plant Employees Union 110 24th St, Niagara Falls 14303 | (716) 285-9458 |
| Paper Allied Ind Chemical 110 24th St, Niagara Falls 14303 | (716) 282-7101 |
| Plumbers & Steamfitters 3900 Packard Rd, Niagara Falls 14303 | (716) 282-0602 |
| Us Wa Local 9436 110 24th St, Niagara Falls 14303 | (716) 284-8491 |