The decline of trade union membership in Australia since the 1980s is attributed to several factors. Three main groups have replaced traditional trade unions, including managers and professionals, government agencies, and skilled and semi-skilled workers. These groups prioritize their own interests over those of their members, leading to a decline in trade union membership. Additionally, some unions were charging high fees, prioritizing their own interests over those of their members, and unfriendly laws subjected to trade unions made it difficult for them to operate effectively. As a result, many workers are now independent and no longer associate with any union member, making trade unions an irrelevant actor in the Australian Employment Relation.