Trade Unions will often manage a superannuation fund so as to keep the trade union afloat & pay their trade union administration fees, however many trade unions now call themselves a association, do a google search on australian associations & you will see that their is alot of australian associations, therefore it is fair to say that trade unions who once used ideologies of capitalism versus socialism & industrial worker theories now prefer to call themselves a australian association & manage a superannuation fund
Here is a link to a australian association calling themselves the "Australian Medical Laser Association"
its fair to say that this organisation is a trade union who probably manage a superannuation fund for people who work with Medical Lasers.