My Grandfather told me about one years ago from his job. He worked in a cement plant. When it came close to retirement date, employees were brought into the office to go over their files to make sure everything was in order (dates of employment, addresses, etc.).
One employee had a bad habit of imbibing now and then and winding up with a hangover for his next shift. He would then call in and say he had to go have a tooth pulled. In those days, they never thought about asking for a Doctor's note for things like that.
Grandad said when they called this gentleman in to go over his papers, the Boss Man very calmly said to him, "Do you realize in the time you've worked here you have had 53 teeth pulled?".