In recent years UK government policy has been drawing private companies into the operation of the British National Health Service as providers of health care. Hitherto the National Health Service has been the main employer of health care practitioners, but this may change as a result of this development. There is an issue as to whether professional health care practitioners owe the same moral commitment to an employer in the private sector as they would owe to an employer that is part of the state-run National Health Service. I explore some arguments around this issue, focusing on ways of identifying organisational commitment to good health care. With regard to the practitioners commitment to the organisation I consider two strengths of commitment, normative and calculative. I then undertake an analysis of performance, regulatory regimes, and organisational obligations for both sectors. I conclude that while performance and regulatory regimes show little difference between sectors, there is a reasonably compelling argument in favour of a stronger moral commitment to state bodies based on organisational obligations.