Jean-Charles Leygues var deputeret leder af Kommissionsformand Jacques Delors’s kabinet (1987-1992) og vicegeneraldirektør ved GD for regionalpolitik i 2004-2007.
Jean-Charles Leygues was Deputy Head of the Cabinet of Commission President Jacques Delors (1987-1992) and Deputy Director-General at the Regional Policy DG in 2004-2007.