This article attempts to assess the importance of the environmental dimension of the concept of corporate social responsibility (Social Corporate Responsibility - CSR) in small and medium-sized enterprises. The first part describes the essence of corporate social responsibility. The second part is the basic pillar of CSR, which is an ecological area. The third part presents the environmental efforts undertaken by small and medium-sized enterprises in the field of CSR. The analysis was based on the literature available and data obtained from empirical research conducted by the writer. The results show that companies, however in different extent undertake ecological activities willingly. Furthermore, those activities benefit not only in terms of the environmental dimension of CSR, but also in other areas of the organization.