This paper examines theoretical explanations of the employment disadvantage experienced by many female part-time workers. Data from a survey of 643 qualified National Health Service (NHS) nurses is used to establish employment profiles of respondents. Employment profiles reveal that, contrary to many predictions, part-time female nurses do not 'invest less' in their careers than their full-time counterparts in terms of qualifications and experience. Neither are part-time nurses relatively 'uncommitted' to their careers compared to full-time nurses. It is found that the organizational context affects how opportunities are structured for part-time nurses. The management implications of the findings for the NHS are also considered.