For two years, representatives of 19 Dutch companies have been working together to find out what corporate social responsibility actually means in practice and what the added value of these efforts is. These activities have been carried out in the context of the Dutch National Initiative for Sustainable Development. The meaning of corporate social responsibility turns out to be a search process. It is not a clear-cut set of activities which any company can simply copy. "Learning about Corporate Social Responsibility" reports on the practical results of the NIDO programme and also reflects on the learning experiences gained from implementing corporate social responsibility in Dutch business practices.