Abstract: This thesis concerns an investigation of the tripartite arrangements between the government, the nursing and the medical sectors in New Zealand over the period 1984 to 2001 with a particular focus on primary health care. The start point is the commencement of the health reforms instituted by the Fourth New Zealand Labour Government of 1984. The thesis falls within a framework of critical inquiry, specifically, the methodology of depth hermeneutics (Thompson, 1990), a development of critical theory. The effects of political and economic policies and the methodologies of neo-liberal market reform are examined together with the concept of collaboration as an ideological symbolic form, typical of enterprise culture. The limitations of economic models such as public choice theory, agency theory and managerialism are examined from the point of view of government strategies and their effects on the relationships between the nursing and medical professions. The influence of American health care policies and their partial introduction into primary health care in New Zealand is traversed in some detail, together with the experiences of health reform in several other countries. Post election 1999, the thesis considers the effect of change of political direction consequent upon the election of a Labour Coalition government and concludes that the removal of the neo-liberal ethic by Labour may terminate entrepreneurial opportunities in the nursing profession. The thesis considers the effects of a change to Third Way political direction on national health care policy and on the medical and nursing professions. The data is derived from various texts and transcripts of interviews with 12 health professionals and health commentators. The histories and current relationships between the nursing and medical professions are examined in relation to their claims to be scientific discourses and it is argued that the issue of lack of recognition as a scientific discourse is at the root of nursing's perceived inferiority to medicine. This is further expanded in a discussion at the end of the thesis where the structure of the two professions is compared and critiqued. A conclusion is drawn that a potential for action exists to remedy the deficient structure of nursing. The thesis argues that this is the major issue which maintains nursing in the primary sector in a perceived position of inferiority to medicine. The thesis also concludes that the role of government in this triangular relationship is one of manipulation to bring about necessary fundamental change in the delivery of health services at the lowest possible cost without materially strengthening the autonomy of the nursing or the medical professions.