| Business | Phone |
| Assoc Intl Des Machinstes 5255 Boul Henri-Bourassa O #102, Saint-Laurent H4R 2M6 | (514) 956-1578 |
| Association Intrntl Des Mach 3860 Boul De La Cote-Vertu #208, Saint-Laurent H4R 1V4 | (514) 332-2668 |
| Association International Mach 5255 Boul Henri-Bourassa O #100, Saint-Laurent H4R 2M6 | (514) 332-1912 |
| Iamaw 3860 Boul De La Cote-Vertu, Saint-Laurent H4R 1V4 | (514) 336-3031 |
| Local 1849 Tca Quebec 200 Boul Marcel-Laurin, Saint-Laurent H4M 2L5 | (514) 744-0991 |
| Fraternite Desa Ingenieurs 3610 Rue Valiquette, Saint-Laurent H4S 1X8 | (514) 956-1832 |