A co-worker was fired this past week. She was promoted like 4-5 months ago, and she had been in over her head since from what I was told, not retaining anything, never taking notes, and constantly making the same mistakes over and over. The straw was apparently last weekend when she was on call and did very little of what needed to be checked.
To unpack that a little, all of us have be on call like 4-5 weekends a year, and it is not bad at all. You take any calls about any work-related emergency (you forward the after hours phone to your cell on Friday) and check on anything that picks up or delivers on the weekend. Most weekends are relatively stress-free, but a handful a year can be a pain in the ass, and that is luck of the draw. This co-worker who was fired had long complained about it, always saying, "I don't like having to work all weekend when I am not getting paid for it." Uh, we are all salary, not hourly employees! That is part of the job, which was made clear to all of us, including you, when you took the job!! If you didn't like that part of the job, you should have gone and worked somewhere else.
But hey, maybe she was looking to get the axe and loafing it last weekend was her way of quiet quitting.