In social policy debates and research over recent years, ‘risk’, ‘social inclusion’ and ‘the life course’ have become influential topics. In this themed section we will revisit these concepts and analyse how they have influenced policy debates and research in Australia and elsewhere. The contributions were developed as part of a research collaboration that brings together expertise from social policy, gender studies, risk sociology, social work, youth studies and research on ageing and old age. This introduction outlines the concepts and dimensions we found helpful for analysing social policy practice and research and the key arguments of the contributions.