(Methinks this has been posted in the wrong category)
The lift in our college hall of residence got stuck on a regular basis (probably because we kept trying to set a new record for the number of people that you could get in it!). Apart from the problem of needing a loo, such incidents have never really bothered me.
The railway station where I worked had a lift in the car park. If the emergency button was pressed the call went through to the station supervisor's office but and then, if there was no answer, was automatically forwarded to the station supervisor. The supervisory team pointed out that we'd not actually be told what to do if anyone called, so we were told that we'd have to attend a course on releasing people from the lift. It took a year to arrange the course, eventually leaving management satisfied that they'd complied with their duty until we pointed out that we couldn't carry out the procedure without access to the machinery room and we'd not got a key! It took several months before keys were cut but, at last, we were equipped to cope with an emergency.
When someone finally did get stuck in the lift he pressed the emergency button, only to get no response. (He had to call the fire brigade from his mobile). The subsequent investigation showed that the phone line had been cut off because the rail company's finance section had been ignoring phone bills addressed to 'The Lift Room, Station Car Park, . . . ', thinking that they were sent out in error!