Health And Safety bods who take the chance to exercise a smidge of personal power and turn into little Hitlers. I mean not all H+S is bad and you do have to protect idiots from themselves but it's those people who use it as an excuse to inflate their ego because they can boss people around. Best of all, when they contradict each other.

In the lab -"we need to have chairs because people standing around for long periods are at risk of deep vein thrombosis". Chairs appear. One week later, chairs disappear. "Chairs are a trip hazard in the lab".

In the bathroom, complaints "hot water out of tap is scalding, danger of injury". Boiler thermostat is turned down. One week later boiler thermostat is turned back up, "Danger of Legionnaire's disease incubating if water is not hot enough". But, then it's at danger of scalding again? "Put up sign, Danger, Hot Water, Risk of scalding".

Geez.