They want to cut down the spanish ATCO salaries to be more normal. And the government is doing a very hard campaign against the controllers, it started with lies when the minister said that controllers win a minimun of 370k, which made a lof of controllers earning 150-180k jump from their sits. And probably this huge salaries are part lies too. Probably, this is the cost of the controllers to the agency, not the gross salary, but amazing anyway.
Spain is going through difficult times with a big crisis and a 20% of unemployment, so the public opinion is quite sensible to these stunning salaries. In spain people makes normally an annual gross of 20-30k in average, 40-50k the well paid ones and 60-80k the very well paid jobs (managers, doctors at their 40s, etc,) so talk about these numbers of 300k its difficult to explain and deffend.
There is a precedent that a few years ago AENA tried to make a new agreement with the ATC's union to lower the salaries of the new atcs and maintain the big bucks of the ones that were in, but it didn't work when the voting was made inside the union by a little. So...who knows what will be the result now.
As I said before, let's see how this people manage to stop this minister which is saying their salaries in the news every damn day and what deal they do.