The Canadian Centre for Occupational Health and Safety is always my first stop for ergonomics and workplace health resources in Canada. I like that the ergonomics best practice information extends beyond your typical desk type workstation, (the information on so called office ergonomics is thorough and helpful though!).
On the site you’ll also find ergonomics for driving, hand tools, lifting and carrying,
The OSH Answers (Occupational Health and Safety) has a wide range of evidence informed resources across a range of topics like safety, diseases and disorders, workplace hazards and the like. Much of the information across the site is free, although there are plenty of paid resources to purchase too. I use a mixture of both the paid and free resources in my occupational therapy practice. For example, I have downloaded and posted their free posters for several workplaces where I provide occupational therapy intervention.