Efficient management of human resource of a bank and work ethics of employees will lead a banking company to great success, hence the researcher has made an attempt to study selected aspects of work ethics of selected private sector banks in Nagapattinam district of Tamilnadu state. The present study has been undertaken with primary data collected from 150 sample respondents through questionnaire. The researcher selected three private sector banks namely ICICI Bank, Axis Bank, HDFC Bank in the study area and collected data from 50 respondents each from each bank. The researcher applied percentage, mean and ranking method as statistical tools for analyzing the data. The researcher analysed 11 aspects of work ethics of employees in private sector banks in Nagapattinam districts of Tamilnadu state. It is found from the study that optimum work load is present in private banks, no monotonous job, since different types of works are allotted to employees, they accept that there is high responsibility and accountability in private banking job. On the other hands, the respondents are felt that working hours are not convenient and they felt that there is high work than what they expected.