Sect 41,
Call their bluff. Don't be afraid of finding new work. That fear is exactly what they're relying on to push through substandard payrises.
Stand up to the ba$tards and tell them that if they don't pay you a fair days pay then they can shove their job up their ar$e and send the work wherever they bloody well like!!
If worst comes to worst then I guarantee that you will find work to sustain you and your family with the current skills shortage(who knows-a new job may even pay more and you'll probably love the change).
Your terms and conditions have been eroded for the last 5-7 years and if you allow it to continue you will be going backwards even more. You have nothing to lose and everything to gain by taking a hard line. I think its a good time to give QF some hard negotiating back in return for all their sob stories of the last few years!!