I went to lunch break once with my lock on a disconnect. While I was eating lunch, a production supervisor had ordered my lock cut off and the machine prepared for production. If I hadn't checked, I may not have known the machine wasn't still locked off.
In hindsight, I shouldn't have did what I did, but I was vocal enough about it to get a man who was nearing company retirement, fired. If I had it to do over, I should have just flattened his car tires or something and got over it. I really didn't think they'd fire him. His lost a lot because of my big mouth.