The objective of this Advocacy Guide on Business and Human Rights (BHR) in the United Nations (UN) is to enable civil society groups worldwide to take a more active part in the debates occurring in the UN around the issue of corporate accountability to human rights. This Part I will inform civil society actors about...the mandate of the UN Special Representative on Business and Human Rights (SRSG), Professor John Ruggie. The Guide will also describe the positions and actions of the Corporate Accountability Working Group and other organizations over the years, and suggest some emerging issues for advocacy within the context of the SRSG’s 2008‐2011 mandate...Part II plans to expand upon the first to include other entry points for advocacy within the UN, such as the human rights treaty bodies, Special Rapporteurs and other fora.