I have to admit I never looked it up before but in BC the employer is responsible for the safe work environment when someone is working from home. That includes provisions for work-alone and workplace ergonomics. (WorkSafeBC is our equivalent to WCB in other parts).

https://www.worksafebc.com/en/about-...king-from-home

They are not responsible for travel from home to the workplace, but travel from the workplace to other places where the worker has to attend meeting etc.

https://www2.gov.bc.ca/gov/content/c...overage-claims

This is going to keep lawyers busy across the country for years to come.