From Deliveroo to Amazon, digital platforms have drastically transformed the way we work. But how are these transformations being received and challenged by workers? This book provides a radical interpretation of the changing nature of worker movements in the digital age, developing an invaluable approach that combines social movement studies and industrial relations. Using case studies taken from Europe and North America, it offers a comparative perspective on the mobilizing trajectories of different platform workers and their distinct organizational forms and action repertoires. This is an innovative book that offers a complete view of the new labour conflicts in the platform economy.