Most people were forced to work longer hours each week, and to 'add insult to injury', the company decided not to give pay raises.
If you keep on lifting those heavy weights, you'll 'do yourself an injury'.
an athlete who is 'injury-prone' [=an athlete who is frequently injured]
(..) you lose it. No, you don't understand. Do that and I'll put all eight inches of this in your ear. All right, but you should know that sudden, serious brain injury... ...causes the victim to bite down hard. In fact, I hear the bite reflex is so strong... ...they have to pry the victim's jaws open... (..)1994 The Shawshank Redemption