When he didn't get the pay raise he was expecting, he had to take another job to 'pick up the slack'. [=to make up for the money he was not making]
The manager has to 'take up the slack' when employees don't do their jobs correctly.
We left some 'slack' in the budget so that we can hire more people if we have to.
(..) more rich assholes to gratify tomorrow. Early night, Maeve? Feeling a bit out of sorts. Clementine can pick up the slack. Night. Forgetting something, Kissy? I'm beginning to think you're getting sweet on me. (..)2016 TvShow: Westworld Title: The Original Season: 1 Episode 1