Since April 2001 Prof. Dr. Bachmann took over the management of the office of the Council for Sustainable Development, since 2007 as Secretary General. His duties as Secretary General of the Sustainability Council include the initiation, guidance and implementation of all content and process-related work of the Council. The mediation to government, parliament and associations, including the conceptual development of the concept of sustainability is another important feature. He was responsible for the independent, professional and political work of the council and the office, with its nineteen employees. The direct and indirect budget currently amounts to nine million euros annually. In March 2020, he hand over the management of the Sustainability Council to his successor and enter the third phase of his life.