The business ethics means applying ethical principles within business relations and activities. Correct moral actions can be maintained simply, by existing legal restrictions and by following very clear code of conduct which all parties are familiar with as well as accepting it. Code of conduct is set of formalized rules and measures that point on companys’ expectations from its employees. The leadership goal in any type of organisation is to secure and provide effective direction of enthusiasm and energy in positive behaviors. Focus of leadership is shaping common purpose and effecting others in order to improve or change. The leading effectivity depends on leaders’ features and capabilities, also on features and capabilities people working under his supervision and characteristics of particular situation. Business banks are founded by people who have financial assets in order to finance (to credit) those who are not in possession of that kind of capital. Banks have a central role in forming and usefulness of money allocations in all its forms. They have, just like any other business organisation, realized that it is less cost-effective having positive reputation, when clients and business partners are loyal and employees are satisfied. How to conduct business ethics in retail banking and what is the exact role of leadership in those cases something is that has been researched among bank clerks in chosen Bank.