Dh stacks shelves and said its so busy customers just crowd round him every day. He asks them to step back when they are too close but when one steps back 2 more step in. We are very strict at home on social distancing. He said at the tills people are told to keep behind a 1metre line but whilst filling shelves customers just crowd him.
He uses hand gel and regularly washes his hands.
But being on the shop floor is dangerous right now.
What can I advise him?