Dietmar Hexel is an organizational developer and German trade unionist.
From 2002 to May 2014, he was a member of the DGB Executive Board and from 2007 to 2011 a member of the SPD party executive committee. Party executive. From 2002 to 2015, he was a member of the Government Commission on the German Corporate Governance Code (DCGK).
In the DGB Federal Board, he was responsible for structural industry and service policy with energy, environmental and climate policy, for co-determination, corporate governance and CSR, union organizing policy and development, human resources, internal audit and the DGB-Rechtsschutz GmbH. In 2005, he launched measures to strengthen the DGB trade unions with the Trendwende project.