Unions are making a comeback. Labour disputes around the world have hit the headlines as unions take action to challenge inequality. But while media coverage has increased, understanding of unions has not. In this lively history of Australian unionism Liam Byrne seeks to illuminate what unionism means, exploring why successive generations of working people organised unions and nurtured them for future generations. Foregrounding the pioneering efforts of women workers, Aboriginal and Torres Strait Islander workers, culturally and linguistically diverse workers, and LGBTIQA+ workers as central to the union story today, Byrne uses case studies of worker action and struggle to better understand the lived reality of unionism, its challenges, and its contribution to Australian life. No Power Greater is the compelling story of the acts of rebellion and solidarity that have shaped Australia's past and shows that unions are far from history.