That may be the theory but in Spain this means the cousin, son, brother, neighbor, etc, etc of those that do the selection will get the job. In any case the present system is plainly not working as it produces a large number of controllers of very low quality. In some cases due to a poor attitude (I passed the very difficult entry barrier, I paid my dues and now I own this job) or with very poor ability. The training cannot be much worse and they are not even taught how to speak properly into a microphone (It amazes me how many times the volume is illegible because they are simply not speaking into the microphone)
Spain belongs to Africa, geologically and historically. Don't get fooled by Spain (or Greece, or Portugal) being a member of the EU. TIA!