- Since 1987: Judge in diverse positions:

- 1933-1998: regional court Köln with personal management and organisation

- 1998-2005: higher regional court Köln with personal management and organisation

- 2005-2007: Chairman judge at higher regional court Köln

- 2007-2014: vice president regional court Bonn

- Since 2006: Short time expert in China, Rumania, Kosovo, Armenien and Latvia
- Since 2014: president regional court Köln