get the sack

It could be a lot worse, but at the same time, once you go up, expectations go up and ultimately that's what leads to managers getting the sack.

“I thought I was going to get the sack at that point, but he got it. He took it away,” Oweh said.

You will only get the sack if you are caught, and you probably will get caught; you are sure to do something silly.

"Give her a good job in some place as far from here as possible, and tell her that, if her tongue wags on a certain subject, she'll get the sack."

You are running the risk of getting the sack, and for nothing at all.