End-of-month is a very busy time for our department. Reports have to be filed, data has to be keyed into the system and uploaded, etc. The last working week of the month is usually the only time anybody gets any overtime because there is simply much more work to be done than the rest of the month. (I might work an eleven-hour day during the last week of the month but only need two hours a day to do my job during the rest of it).
A certain, lengthy report was supposed to come about 8 days prior to the last day of the month. Our job is to process this report (its in two parts so its easiest to just have two people working on it), add in our own data, create an Excel spreadsheet, and pass that along. The problem is the report came in so late we'd already closed the month. When we processed Late Report as usual, it generated all sorts of errors downstream. They called it "cross month", whatever that means. Which, okay, is a big error, but no one had told us that we'd need to make changes to how we process that report, let alone what those changes were.
Coworker and TT Boss have never gotten along well. So when Coworker was unsure of how to proceed, she made her best guess ... and I followed her lead as she's worked here longer and is the woman who trained me. (You can see where this is going, can't you?) We submitted the report and the next day, TT Boss was livid that it was so messed up. She stormed over to our cubicles and began to berate my coworker (ignoring the fact that I had screwed up too), picked up a manila file full of papers, and struck coworker with it. It wasn't hard enough to bruise my coworker but it was a bratty, childish thing to do and very demeaning. Coworker's cubicle opens directly across the path from mine so I saw the whole mess.
I discreetly opened an inter-company instant message to Professional Boss:
Me: We have an awkward situation down here.
Me: TT Boss just hit Coworker because she was mad.
PBoss didn't respond to me after that but TT Boss got called up to his office, still stomping her feet like a toddler. Coworker gathered up her belongings and took an early lunch at that point. I told her to go to HR but she was afraid of retaliation. (Her husband is unemployed and they need the health insurance Our Company provides).
Half an hour later, TT Boss came back down. Her face was red from crying and she was holding back tears. Coworker was still gone so she called me into her office. When I went in, she gave me a formal apology for her behavior and promised it wouldn't happen again. I accepted her apology and went back to my desk to wait for Coworker's return.
Coworker did come back and continued her work. I got busy then with other things and it's been a few months now so I can't recall if Coworker is the one who fixed our screw-up or if they had to call in another department. I never saw any kind of punishment for TT Boss but then, I wasn't really involved beyond being a witness.
But that's the story of the most unprofessional thing I've ever seen at work.