Most definitions of corporate social responsibility describe it as a concept whereby companies integrate social and environmental concerns in their business operations and in their interaction with their stakeholders on a voluntary basis.
Commission of European Communities. (2001). Promoting a European Framework for Corporate Social Responsibilities, COM 336 final. Brussels. Page 6.
https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=COM:2001:0366:FIN:EN:PDF