Small acts of rebellion. Take extra long breaks. Automate parts of my job and then don't tell anybody that I did it. Break some shit on purpose and act like it was an accident. Steal as much stuff that isn't nailed down as possible. The list would go on, but I'd honestly have no idea what I would actually do in that situation.
I'm certainly not giving it 100% at whatever job I'm working at. I would say form a union, but that's hard to do when you are working for 56 hour workweeks plus commute, not including overtime. That's assuming the 7 day workweek remains 8 hour shifts rather than moving down to something like 6 hour shifts with an unpaid lunch break.