Her boss really 'gave her the shaft' [=treated her unfairly] when he promoted someone less experienced instead of her.
He got promoted and she 'got the shaft'.
You really 'got shafted' in that deal.
(..) Brett alive? - What? - Could Brett be alive? No. I mean, I don't think so. Well, this air shaft may work to our advantage. Here it leads up to and comes out in the main air lock. All right. There's only one big opening along the way. (..)1979 Alien
(..) Hey, hey. I'm not gonna hurt you. Whatever it was, it was... it was big and... You're sure it took him into the air shaft? It disappeared into one of the cooling ducts. No question, it's... it's using the air ducts to move around. Could he want (..)1979 Alien