The main objective of this study is to identify the determinants that influence user demand for lifelong learning in institutions of higher education. Qualitative methodology was used to develop an instrument and a quantitative approach was used for the remainder of the study. After a literature review and in-depth interviews with experts in lifelong learning, we obtained the dimensions of the study and validated a questionnaire using expert opinion and a pilot test. The results and conclusions drawn from this study indicate the existence of three dimensions in user demand for lifelong learning in institutions of higher education: motivational, conflicts/difficulties and career-development. The constructs of current-work, career-change and personal improvement are linearly related to the motivational dimension; personal-constructs, external and time-related constructs are linked to the conflict/difficulties dimension; and working-environment and professional-experience constructs are related with the career development dimension. One of the novel contributions of this work is that it obtains empirical evidence on the determinants of demand for lifelong learning from the perspective of people who seek training.