Seattle Husker
10,000+ Posts
They are likely in far less danger in their jobs than teachers are.
This. Schools are germ factories. Have you seen a K-2 classroom? Nearly every kid has snot flowing from their noses. The kids naturally want to touch everything. Middle-school kids still are learning to sneeze into their elbow. My wife who no longer teaches elementary had children pee their pants on multiple occasions when she taught 1 and 2. There isn't a virus in a school that isn't a cold/flu virus in the school that isn't shared broadly. This is all based on the previous experience.
Not sure grocery store employees have to experience any of that.