I've heard it but it's not used in BrE. I think I've only heard it in AmE contexts. A lot? No.

Student or Learner
https://www.idiomsandslang.com/pink-slip/
Pink Slip
Definition: A layoff notice; loss of a job, typically because of layoffs
Example: You can also say “pink-slipped” —I was pink-slipped.
It seems to originate the fact that some companies used to give pink slips to people to be laid off.
Have you heard or used this idiom a lot?
I've heard it but it's not used in BrE. I think I've only heard it in AmE contexts. A lot? No.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
It used to be heard frequently in American English, at least in journalism. I haven't noticed whether it's become less common recently.
I am not a teacher.
As far as I know, it's still fairly common in AmE. I do suspect that usage is probably generational, though. As such, it will likely start to fall out of use before long.
Wear short sleeves! Support your right to bare arms!
I've heard it used as "got the pink slip" or "given the pink slip". Expect to hear "fired" more often.
![]()
Not a professional teacher