Since its implementation in 2003, the Youth Criminal Justice Act has been the subject of intense political and scholarly debate. A complicated mixture of provisions intended to provide harsher punishments for serious violent crimes while encouraging positive, non-punitive interventions in less serious cases, its impact on the youth justice system remains controversial.Implementing and Working with the Youth Criminal Justice Act across Canada provides the first comprehensive, province-by-province analysis of how each Canadian jurisdiction has implemented the Act in accordance with its own history, traditions, and institutional arrangements. Drawing on in-depth interviews with probation officers, counselors, educators, and social workers, the contributors use the experiences of practitioners to offer a new analytical perspective on a complicated and contentious aspect of the Canadian justice system. Their conclusions provide vital policy and program information for researchers, practitioners, and policy makers concerned with Canada’s youth justice systems.