S-2.1, r. 13 - Regulation respecting occupational health and safety
340. Safety precautions: In areas where there is a danger of contact with moving parts, workers shall comply with the following standards:
(1) their clothing shall fit well and have no loose flaps;
(2) necklaces, bracelets or rings shall not be worn, with the exception of medical alert bracelets;
(3) anyone with long hair shall tuck it under a bonnet, a hat or a hairnet.