The post by Lord Spandex Master sums up the UK way of doing things. Spanish ATC is not alone in having attacks made on their conditions or having management try to beat them over the head. They only have it at a greater degree, for now.
Look in this Forum over the years and see how NATS staff have had numerous battles to fight. Battles on pensions, pay, new equipment ..... The lists are long. The workforce fight these issues, sometimes winning, but often losing. But, regardless of the battle, we never ever bring the problems on to the controlling position. We don't provide any less of a service, or do only what we have to when controlling. If you claim to be a professional, then that is the only way to behave. We save our fighting energy for where it belongs, that is engaging management and political bodies, primarily through our elected union representatives.
I hope Akhorahill's post has lost something in translation and they have been misunderstood. If however they really do operate that way, withholding flight safety information and making no effort to ensure an efficient ATC operation, because they are pissed off with their situation, then they are dangerous and should not be classed as fit for duty. In that case, please report for your duties as normal but tell your management that you don't feel mentally fit enough for operational sector duties. You may prevent an avoidable incident or accident, and that, my friend, is showing real professionalism. Your customers pay for, and expect, nothing less.