For me, i know I'n depth the role of fair work australia... how they replaced the AIRC, make minimum wage order, determine unfair dismissal claims, attempt to resolve disputes... and importantly how they review modern awards every 4 years under the current decentralised system. With trade unions, maybe no a couple of ads and dis of them becoming involved during the establishment of collective agreements.. and no that employees must be informed of there right to be represented by trade unions - also they are organisations formed to represent the rights of workers in a particular industry - and that in recent years they have amalgamated as a number of super unions. This should get you through, i have find with compak exams, they are highly specialised questions, that don't really seem to appear on the end of year exams. Hope this helps