A complete overtime ban would be the way to go, however it would never work because there will always be the overtime hogs who need it and will do it regardless. So as much as I would prefer to see that, it would never happen.
However a 48 hour ban is something that even the unloyal engineers could possibly do in support of their mates who have been unfairly dispatched into the ether. The flow on affect with delays, disruptions and the costs involved would hit them where it hurts. And the best thing is that by not working the overtime you aren't breaking any laws, overnight cannot be enforced, those who won't work it have done no wrong.
FWA and the law are a complete ass. Engineers are punted and within 24 hours there are calls for O/T to be done. Joyce and Co you are
Another flawed plan that won't work! Add it to the list.