They should be fired, or have their pay cut.
Sincerely, a 22 year old.
Though, maybe there is a case for just checking notifications. I have a Pebble so these come through on to the watch where it is silent and can be discretely checked. The problem with the Pebble is that if you're caught looking it may appear as though you're rudely looking at the time and thinking "when will this fucking asshole stop talking?". A device such as Google Glass would be the victimless crime in this case (maybe, I have never actually seen one) - but I'm reluctant to be in the presence of somebody who is wearing one (a clearly visible physical shutter for the camera is in dire need!).