This book explores how career development experiences during education are relevant for wellbeing in youth career transitions from an interdisciplinary lens, using longitudinal data from different national educational contexts. Seven empirical chapters culminate in a conceptual model and recommendations for careers and wellbeing-oriented prevention and intervention programs to assist young people as they transition into the world of work. Following a foreword by Professor Stephen Lamb (the Springer International Study of City Youth series editor) and introduction by the editors, the book consists of empirical chapters based in six national and educational contexts, focusing specifically on schooling, higher education and transitions between compulsory schooling and young adulthood. Each national context chapter generates insights based on a longitudinal cohort study with at least two data points concerning information on young peoples career development and wellbeing. The empirical chapters are followed by discussion and conclusion chapters by the editors. The editors reflect on the evidence generated in this book and question what we know about the relevance of career development experiences on young peoples wellbeing during education-to-work transitions. Implications of these empirical findings on career interventions and policy making across the educational systems are discussed. The contributions in this book show that career development experiences while in education matters, not only for employment outcomes, but also for our subjective wellbeing in early careers. Key conclusions point towards a need for theoretically integrating: (i) the sensemaking role of time; (ii) resource-based approaches to careers; as well as (iii) the efficacy of career development experiences to overcome structural inequalities. Methodologically, this book shows the value of nationally representative longitudinal datasets that focus on young peoples educational and labour market experiences.