It's not a union if it's run by the company, that's just management board but with an accent.

And any law what allows such a thing is anti-union by default, it's just an internal misuse of the words meaning (plus it lowers the chances of an actual/additional union to form and on top of that it collects fees from the paychecks it itself gives to the workers for their work? lulwtf). I don't know if any EU county where such thing is remotely allowed, however unions are (mostly) not enforced in the private sector, even in some cases where the law actually predicts one to be in place (so, company in such a situation is technically breaking the law but at the same time also can't force or do anything towards starting a union since that would just make it their puppet & regulators would act immediately).