The aim of this paper was to explain the theory and historical development of the corporate social responsibility concept in the world and the development of CSR in Croatia. Theoretical analysis included definitions from 1953 to 2011 and terminology. The definitions were dynamic and different, but they all have an emphasis on social contribution and community involvement. Corporate social responsibility includes various stakeholders, such as employees, shareholders, suppliers, the local community, civil associations, state bodies, academic institutions and other social groups. Many people also feel that there are additional stakeholders in the organization, which are: the environment and the future. There are different models (theories) of socially responsible business, and the most recognizable are Carroll's pyramid of corporate social responsibility and the triple bottom line model. Sustainable development means meeting the requirements of the present without compromising the capability of the next generations to satisfy their own needs. Corporate sustainability is a version of sustainable development in companies. Therefore, sustainable development and CSR complement each other. Chapter four is an analysis of selected company example. KONČAR - Elektroindustrija d.d. has social responsibility in the economic, social and environmental dimension. KONČAR has demonstrated a voluntary managerial approach to sustainable development and it is socially responsible in all areas of the CSR Index.