This essay provides an overview of trade unions and employer associations in Australia. It examines the evolution and relevance of trade unions, highlighting the role of the Rail, Tram, and Bus Union (RTBU) as an example of an industrial union. The essay discusses the sources of tension in industrial relations, such as working conditions and industrial action, and the justification for such actions. Furthermore, it explores whether workers could achieve similar outcomes regarding wages and conditions without the presence of unions, suggesting that while some industries may treat workers fairly, unions play a crucial role in ensuring fair treatment and preventing discrimination. The essay references key academic sources to support its arguments, offering a comprehensive analysis of the subject.