Legally in Austria no one without a sufficient education (apprenticeship or technical school) is allowed to touch any live parts, i.e. do anything beyond changing light bulbs, and no one without a master's license is allowed to charge money for his work.
That's the theory. Reality looks different... with all the hack jobs from colleagues I've seen I can understand why most people don't really trust pros either and don't see a problem in hiring handymen. I'm just ripping out a whole mess done by professionals, melted wires, wrong colors, way too much bare copper...