I have a friend who is a post-doc at a Quebec university with an employer-specific work permit which states they must work in "Montreal". They want to live in Ontario but are unsure if they are legally allowed to live in another province than they work. They work from home now, but would be set up with an office at another university in Ontario (but still working for the same employer in Montreal) once things are back to normal. They also don't know if they'd get health insurance.