The evidence from the recent financial crisis in the USA indicates the importance of ethical decision making in the banking and finance industry. This study surveyed 90 banking and finance professionals and students in Vietnam to examine the differences in their ethical decision making. The questionnaire consisted of eight vignettes describing practical ethical dilemmas which banking and finance professionals may face in their daily work. We found significant differences in ethical decision making between these two groups in their overall ethical (...) scores and in four out of eight vignettes. We also conducted a 3-h ethics training programme for these professionals and students and found that teaching ethics was more effective for students than working adults in the banking and finance industry. These findings are important as they show how banking and financial institutions can make workplace environments more conducive to ethical decision-making by enhancing ethics education for both newcomers and existing professionals. (shrink)