The pay incentive decrease would only amount to $60 less for a 12 hour shift. I still get overtime pay (time + 1/2) for over 40 hours, and the extra for night shift and location, etc. I guess I should take the opportunity for extra work since I didn't plan anything except non-profit hobbies this week. I would never plan to actively protest my job unless I was fully FI. I was just planning on taking the passive-aggresive route.
I wouldn't go passive aggressive.
Personally, it wouldn't be worth it to me, but then, I have better things to be doing with my time. If they are hiring contractors and paying them more?
Pay the contractors then. But I would make it clear that it's why you aren't working more. But in a nice way. "Well, let me think about it. You know, normally I'd be happy to help out and work extra - you need the help, I like the money. But with the decrease in incentive pay, it's becoming less worth it to me to pull the extra shifts. Especially considering how much more you are paying the contractors. If you'd like me to pick up the extra shifts - bring the extra incentives back."
My company did something similar. We had times when we were on call, and managed to get a flat fee per shift that you were on call. We also had engineers on shift, and I fought really hard to get them a shift differential. Over the space of a few years of cost-cutting, they got rid of the shift differential for exempt employees, but not the shift. So they were still working nights, but not getting paid for it.
Amazing that when someone else went on vacation - we weren't able to get another engineer to agree to cover that shift. When stuff broke on weekends, nobody was willing to come it. We had 7 junior engineers take off for a 3 day weekend to go backpacking, and the management freaked the fuck out. Like, "What if there is an EMERGENCY!!!" Well, thing is, the 7 guys had 5 different bosses, and all of them got Friday approved off, and they don't work Sat/Sun normally. You can't do anything.