I'm disgusted with the Sainsbury's management over this. I can understand a problem with the heating, but they are not allowing their staff to wear coats, or whatever else they need in order to stay warm. This is a most unusual situation. Surely the normal rules about dress should not apply?
It's OK for us - we've come off the street in our coats. But the staff are actually cold, all through their shift. Older members of staff will get ill through this, and it's very unpleasant for anyone.