RJB
Welcome back!
You are not the only person whose taken a break from this thread. Almost everyone else has, too! Including me, recently! It was making me so miserable ... The chronicler of bad news!
It's getting extremely ugly here & the the worst is yet to come when the current (Liberal) government has control of both houses of parliament. They believe they can do anything, as you can see!
No, "trade-offs" generally mean trade unions or individual workers on contracts agreeing to trade some established conditon of work for some other "concession" the employer might be offering. I'm not brilliant at explaining these things, I hope goodfielder reads this & responds.