'Free trade' strategies have increasingly become a problem for the international labour movement. While trade unions in the North especially in manufacturing have supported free trade agreements to secure export markets for their companies, trade unions in the Global South oppose these agreements, since they often imply deindustrialisation. Especially the expansion of the free trade agenda into services, public procurement, investment, intellectual property rights as well as investor to state dispute settlement provisions are considered to be problematic. The purpose of this volume is to understand better these dynamics underlying 'free trade' policy-making in order to explore possibilities for transnational labour solidarity. Bringing together labour academics with trade union researchers and social movement activists, this volume moves from conceptual reflections about the impact of 'free trade' via the analysis of struggles around free trade agreements to considerations of concrete alternatives. This book was published as a special issue of Globalizations.