Orthogonal problems. Fixing your policy on when your coworkers message you (and when you can respond) can be done independent of your company's WFH policy. As

Orthogonal problems. Fixing your policy on when your coworkers message you (and when you can respond) can be done independent of your company's WFH policy. As for creating a physical distinction between work and home: making WFH optional will solve that too. Go to the office on days you want to, WFH on days you need to stay home.