They would have WHMIS labelling.
As to your earlier point about confidential information, if somebody is using a product that has a confidential business information component, they can apply for an exemption through the WHMIS program. Then, we have a biologist do a review to determine whether or not the information is being adequately disclosed to workers, so that they know how to handle the products appropriately. There is a mechanism for confidential business information and the worker's right to know to coexist within the WHMIS system.
Jason, did you want to add something to that?