直到去世前,他一直是德国法兰克福大学计量经济学教授和外管局数据中心项目主任。他曾是达姆施塔特理工大学的经验经济学和微观计量经济学教授,以及Würzburg大学的计量经济学教授,并在那里教授定量经济学。他在比勒费尔德大学(1982年获得大众文凭)和曼海姆大学(1982年获得大众博士学位)获得大学学位。波尔。,1989, Dr.rer. pol. habil., 1995) and held research and teaching positions at the Université Catholique de Louvain-la-Neuve, CREST-INSEE, at Darmstadt University of Technology, CERGE-Prague, the University of the Federal Armed Forces (Munich) and at the University of Mannheim. He was SPES-fellow of the EU (1990-1992) and a fellow of the Deutsche Forschungsgemeinschaft (1992-1993). Since 1999, he was a research fellow at IZA.