I wrote-
There are refusers who won't get the vaccine and will resign. Then they may find it hard to get another job. Who wants to employ a refuser? They might all end up in a firm making a nice target for COVID. Darwin rules again.
A vaccinated person should not be too happy to work among the unvaxxed. They might resign. While they are extremely unlikely to get seriously sick, they could pass it onto youngsters. These in turn might not get sick but could pass it on. So the pandemic continues.