This paper aims to analyse GDF SUEZ's sustainable development report, focusing on its involvement in socially responsible Human Resource Management practices. We seek to know how Corporate Social Responsibility (CSR) affects HR functions, roles, and activities. According to Fortune magazine, GDF SUEZ ranks first among companies in the world in terms of social responsibility and is among the top 10 global companies across all sectors. Our research focuses on the following practices: recruitment and employment access, training and career development, and well-being in the workplace. These HRM practices seem important to analyse given the context in which companies will have to evolve: ageing of the population, risks of labour shortage, or the war for talent. Our results imply that CSR has a positive influence on employees' advocacy role (Ulrich & Brockbank, 2005) because the Group integrates concerns regarding equal treatment, health and safety, and diversity. We also believe that GDF SUEZ Group desires to develop its brand further by presenting itself as a responsible employer to harvest the benefits that flow from that label.