As Samotnik has already stated, in some places to be on strike is more a priviledge and not something to take for granted.
As an example, our dearest Aena has an interesting way to allow strikes. Let's say our mayor labour union (which do not have any representativity amon atc staff) agree with the government on a 40% minimum services.
Let's assume that for a specific twr there are 10 atcos hired and there are usually 2 working on any given day. Now our company orders that day 4 atcos to be at work and thus we are granted our right to strike.
Yep, we are still part of the european union, I sometimes can't believe it either.
