"any organisation has to adhere to the labour laws . . ."
It would be nice to think so, but the European Institutions have effective and legal immunity from such mundane things as local laws.
In Luxembourg, there are many EU Institutions and many, many eurocrats working in them. I will not go into listing the various advantages these people have (special tax-free supermarkets, no income tax, . . .), but a few years ago there was a review of hiring policy and now EU Institutions in Luxembourg are offering new entry-level positions at less than than the Luxembourg Minimum Wage index.
Nothing can be done against that by the Luxembourg government.
Anon for obvious reasons.
Biting the hand that feeds IT
