In her capacity as minister, Wieczorek-Zeul served as Member of the Broadcasting Board of "Deutsche Welle"; as Member of Board of Supervisory Directors of KfW; and as Member of the Board of Governors of the World Bank. She also participated in the preparations for the 25th G8 summit in 1999 and the 33rd G8 summit in 2007, both of which were hosted by Germany. In her first years in office, she worked merged the 'Deutsche Stiftung für internationale Entwicklung (DSE)' and the 'Carl-Duisberg-Gesellschaft (CDG)' to create InWEnt, an institution with worldwide operations in the field of bilateral development cooperation and international cooperation, with a focus on capacity building.