There is a solution to this; the union has become a parasitic entity between the labour pool and the employers right, so you can just legislate their ostensible

There is a solution to this; the union has become a parasitic entity between the labour pool and the employers right, so you can just legislate their ostensible raison d'être out of existence. That is, enforce fair conditions upon employers at a government level. Then encourage every person to leave their union, because they have no need anymore. Obviously, requires a high integrity government, actual fair enforcement against all parties etc.