One clown managed to get rid of paid optional overtime for the whole company. He was always signing himself in as working all Saturday, a true Stakhanovite in hours without the results to match. After years of this and some suspicions Management checked CCTV which showed him walking in to his desk to turn on his PC and then walking out to take golf clubs out of the boot of his car and hailing a taxi to the links. Coming back hours later he'd just log off and stroll out. He'd been doing this every saturday for years. Company kept it secret, stopped him from getting any further promotions and just removed paid optional overtime for everyone.
One of the big betting chains had a full company christmas party where the founder would be at a random table to show his man-of-the-people credentials. This seriously rough one allocated the seat next to him showed up while off her biscuit on yokes and drink and just acted like a disgrace all night. He took it surprisingly well and her "career" continued undamaged.