The study was on the role of ethics and accountability in governance in the public service. Power Holding Company of Nigeria (PHCN) Lagos was used as a case of study. The objectives were to examine whether public servants display good moral behaviour at work place, to examine whether public officials have regards for the codes of ethics in their service activities, to examine whether public officials maintain good corporate governance attitude amongst others. The population of the study was represented by the total workforce of PHCN, Eko distribution zone. A sample of 240 respondents was randomly selected based on those that completed and returned their questionnaires. A structured questionnaire was designed and used to elicit information from the respondents. A structured questionnaire was adopted because of its high response rate and its ability to reduce incidence of bias. Frequency and percentage were used to analyse the data and the major statistical tool used was chi-square(x2). The major findings established based on data analysis were that public servants do not exhibit good moral behaviour at work place, public Enterprises do not maintain good corporate governance, Authority and responsibility are not clearly defined to achieve accountability and efficiency by public Enterprises .The conclusions reached based on the established finding were that the review of existing literature shows that the three concepts that is ethics, accountability and corporate governance principles are abused in most public and private sector organizations and the analysis of the data tended to support the view. Hence, I concluded that public servants do not exhibit good moral behaviour at work place, public Enterprises do not maintain good corporate governance , authority and responsibility are not clearly defined to achieve accountability and efficiency by public Enterprises. Based on these conclusions , the following recommendations were offered; there is need for training of staff on Ethics, corporate governance and accountability in public sector organizations, public servants should deliver their services based on the stipulations of the code of work Ethics, there should be well defined authority and responsibility to guarantee accountability and efficiency in public Enterprises and so on.