This edited volume explores the old and new "collective dimensions" of employment relations. It examines specific challenges stemming from new forms of work of the digital and sharing economy, such as measurement, monitoring, assessment, and remuneration of work, the protection of work-life balance, the impact of new technologies on health and safety, the adaptation of occupational skills to new work processes, and the responses to the digital restructuring of undertakings. It addresses a series of questions such as how the representational action of unions and works councils can adapt to the challenges posed by new production systems and whether the legislative framework needs to be reformed to ensure that digital workers enjoy the right to collective representation. This important collection offers readers a renewed theoretical perspective and justification of the role that the dialogue between workers (representatives) and companies could play in an increasingly complex world of work.