This paper discusses the layered nature of lifelong learning participation, bringing together fragmented insights in why adults do or do not participate in lifelong learning activities. The paper will discuss the roles and responsibilities of individual adults, education and training providers and countries' social education policies, often labelled as the micro-, meso- and macro-level. The aim of this work is to add a new model to the knowledge base that attempts to integrate separate insights at the three different levels. Apart from discussing the relevance of the micro-, meso- and macro-level, together with a comprehensive model, the paper provides some recommendations for future research in the area of adult lifelong learning participation, such as the adoption of multilevel models, the need for more data linkage and the desire for more diversification of research in terms of geographical spread and types of educational activities adults can undertake.