As for the non ops staff being foolish for working more than the contracted hours for free as Pprune radar states, this is a bit harsh. Having worked in the real world (ie non NATS) this is the norm, and is expected.
It may be harsh, but I still think anyone working for free is foolish and potentially jeopardises everyone's work conditions. It might be expected in the real world, but then that's because they don't have a lot of union power.
We have stockpiles of dry powder in that respect, and the pensions will be the one thing that might actually ensure it's use, for once.