This thesis research the importance of ethics and corporate social responsibility in public relations of the company. In addition to examining the fundamental determinants of ethics and the importance of business ethics through theoretical and practical application, thesis examines the importance of corporate social responsibility and the application of codes of ethics in the business process as well as the practical application of ethics in public relations. Emphasis is thereby placed on the changes taking place in recent years in the perception of public relations, in which the doctrine of shaping public opinion is in decline while modern approach of preserving the reputation and the respect as an important segment of the company's success.