5. If a hazardous product present in the workplace and obtained from a supplier does not have a supplier’s label, in accordance with an exemption provided for in the Hazardous Products Act (R.S.C., 1985, c. H-3) or an exception provided for in the Hazardous Products Regulations (SOR/2015-17), the employer is not required to affix a workplace label on the product or to install a sign, as applicable, except in the cases provided for in this Regulation.