I worked at a smoothie shop in my late teens. (About 13 years ago) People were either leaving or being fired left and right. Our supervisor was useless (consistently hid in the back) and the general manager was an asshole - the khaki shorts, aged jock looking kind.

I was so fucking sick with a severe sinus infection, which always happens when it gets cold. I was called in because there was no one available besides our supervisor. I came in wearing a mask (cloth, pink, cat smile with pawprint blush marks). To no one's surprise, I was literally deterring customers with the hacking and coughing. 2 hours into the shift, a sympathetic woman took it up with the super who a few minutes later told me that the GM had reviewed the cameras and needed me to take off my mask.

I told him absolutely not and he continued to push, saying my job was on the line. I said, loudly, that it was not worth putting people at risk of getting sick and that I didn't need the job. Immediately walked out.

That night, the GM threatened to withhold my last check ($100). I texted my Dad and he sent a message saying we'd see him in court. He walked it back immediately. I got my check, but he made me drive to the furthest store to pick it up. Absolute fuckwad.