In an era defined by globalisation and rapid technological transformation, trade unions face increasingly interconnected challenges that transcend national boundaries. This article explores how transnational cooperation among unions in Sub-Saharan Africa and Germany is forging robust alliances to protect workers' rights across global supply chains. It highlights the critical role of shared knowledge, collective bargaining, and capacity building in addressing pressing issues such as automation, precarious employment, and the transition to electric vehicles. Through the lens of the Transnational Network on Transformation in the Automotive Sector, the publication showcases inspiring examples of solidarity, from improving working conditions to promoting fair labour practices under new due diligence laws. It also underscores the pivotal support provided by Global Union Federations in sustaining these efforts. By uniting across borders, unions amplify their power to advocate for decent work and equitable growth, shaping a fair and sustainable future for workers worldwide. Discover how these innovative partnerships are setting a benchmark for global labour movements, combating the "race to the bottom," and advancing worker solidarity in the face of evolving global challenges.