There shouldn't be a set requirement for the community classified as vulnerable. Continued education is great. Workplace cleanliness is great. It needs to be the individuals choice to continue to work in the workplace or to work from home.
Masks are intolerable for some people. They should not be required.
It does need to be required to not punish vulnerable employees for the need to work from home. That is the only requirement of employers that I believe needs to be enforced.