It sounds like you have a completely different system from that which exists in the Anglophone countries.
Here in the US and Canada we would never dream of having our union reps on the payroll of ownership.
That makes zero sense since it would mean that they would be relying on our signatory contractors for their paycheck when what we want is precisely the opposite; an independent union that can bargain on behalf of the membership
Having our unions funded and paid for by the membership is precisely the point since it means that it’s our union, not the company’s.