I have it on very good authority from an inside source that a well-known airline, using a points system for determining promotions for staff, gives promotion points to cabin crew who don't take any sick leave during the year.

I find that a little unnerving. These are people who hand out food and drinks to other people, all of whom are usually exhausted, heading somewhere where there is no possibility of rest, and crammed inside an unhealthy metal cylinder with poor air for hours on end. Isn't that an irresponsible recipe for spreading disease – just to save on HR costs?