Thesis (MTech (Public Management))--Cape Peninsula University of Technology, 2014. / Ethical conduct displayed by members of the public sector is integral to creating a sustainable democratic government, which upholds the constitutional tenets of accountability, transparency and professional ethicality. Furthermore, a true constitutional democracy emphasises and advocates the notion of service leadership that nurtures public participation and engages with citizens in a positive manner. Ethical conduct in the public sector earns public trust; it is hence a key principle in good governance. Yet, in the years since the advent of democracy in South Africa, the government has been plagued by rampant corruption and maladministration by public officials and politicians in leadership positions. The external control measures passed by government in an attempt to ensure ethicality and accountability within the public sector include codes of ethics, rules of conduct and the enactment of legislation. These are intended to shape the mindset of members of the public sector, with the ultimate aim of an efficient, effective, ethical and responsive public service. The purpose of the current study is to analyse non-compliance with external control measures within the public sector by means of selected case studies and to present the reasons for this occurrence. The three cases selected are: the South African Arms Deal, the corruption trial of Jackie Selebi, and the investigation of Bheki Cele regarding irregularities in the procurement of SAPS assets, the latter two who served as National Commissioners of the South African Police Service but were each dismissed from that post. The reasons for non-compliance with external control measures in the public sector as well as recommendations based on the findings to improve compliance will be undertaken. The three case studies demonstrate the experience and impact of corruption and/or maladministration, which have contributed to the increasing loss of confidence in political leadership in the country as elsewhere in the world. A qualitative methodology of inquiry, including a review of literature covering the theories applied to the case studies will be employed. Owing to the subject nature of the current study, the findings will be validated by an independent source, which has been identified as the Office of the Public Protector.