Rodolphe VIDAL has a Master of Research in Mathematical Economics at Toulouse and a professional back-ground in environment and sustainable development (advice, creation of an information technology services business, local community). In December 2005 he began a thesis, under the direction of Sylvie Faucheux, on the theme of social responsibility within the insurance and mutual banking sector and cooperatives of the « social economy ». This work falls within his functions as a research resource within the Social Entrepreneur Chair of ESSEC where he is responsible for the CSR/BOP (« Base Of the Pyramid »). The nature and practice of these mutual and cooperative enterprises, their governance, and their social networks and ethical values permit a rich and specific contribution to the RSE.