This book considers the discourses that come into play in organizational change. The book outlines the tensions that arise for people having to enact change, and analyzes the ways in which they position themselves in changing organizational environments. The book takes a social semiotic perspective on discourse, organization and change. Here, discourse encompasses not only the multi-modal resources that people mobilize in organizational (inter)action, but also the practices and transformative dynamics afforded by those resources. The organizational changes highlighted in the book revolve around three dimensions of work that are increasingly coming to the fore: participation, boundary-spanning and knowledging. These dimensions are explored through case studies, including a health planning project, an initiative to standardize work practices, and the tension between paper-based and IT-based reporting. The book addresses the relevance of this discourse perspective to organizational research more broadly, by investigating organization as a dynamic of ‘resemiotizations’.