The world of work is rapidly evolving being driven by concurrent transitions. Workers and trade unions are particularly concerned with four key transitions: digital, artificial intelligence, green, and the transition from informal to formal economy, which are fundamentally reshaping job nature, skill demands, and employment dynamics, directly affecting workers, decent work, and trade union work. Clearly, knowledgeable, responsive, and strong trade unions are not just important-they are essential! This second edition of the Academy, implemented in the context of the next general discussion on the transition to formality within the 2025 International Labour Conference, aims to further equip trade unions with the necessary knowledge, skills and tools to understand the interconnectedness of these transitions, leverage opportunities and synergies, and actively shape the transitions. The Academy will further enhance workers’ competences and their ability to act, adapt, anticipate, and innovate strategies that safeguard workers against challenges arising from these transitions while promoting decent work and just transitions.