Employment / professional career

1981-1986
Research Assistant, English Department, University of Trier

1986
PhD (English Linguistics), University of Trier

1987-1991
Coordinator (Adult Education Centre, Archdiocese of Cologne)

1991-1992
Secretary General, Katholische Akademikerarbeit Deutschlands

1992-1998
Assistant, English Department, University of Bonn

1998
Habilitation (English Philology), University of Bonn

1999-2003
Professor of English Linguistics, University of Duisburg

2001-2002
Pro-Vice-Chancellor, University of Duisburg

since 2003
Professor of English Historical Linguistics, University of Cologne