We should have Labour Canada deal with the specifics of the labour code, but there were issues of people with fear. Your risk of working in a community is the same risk, by and large, as working in Ottawa, Toronto, Montreal, or wherever. This is a virus that is essentially anywhere. You cannot run away from it unless you climb to the highest mountain where there's no other person for the next hundred miles. That's the first thing.
The second thing is that all of these communities do have antivirals for early treatment, which is key. As you presumed correctly, when the community is immunized, it's not like some will be immunized and some won't. Everybody in that community will be offered the vaccine.