| Business | Phone |
| Quebec Main-D'Oeuvre Securite 102 Boul Saint-Jean-Baptiste, Chateauguay J6K 3A7 | (450) 691-6020 |
| Quebec Justice Ofc 55 Boul Maple, Chateauguay J6J 3P9 | (450) 691-8305 |
| Quebec Ministere Des Transport 245 Boul Saint-Jean-Baptiste, Chateauguay J6K 3C3 | (450) 698-2487 |
| Quebec Mandataires 169 Boul Maple, Chateauguay J6J 3R1 | (450) 691-6967 |