 From 1987 to 1992 she was a judge at the Court of Appeal ("Oberlandesgericht") in Vienna and from 1993 a judge at the Austrian Supreme Court.She was in the period from 2007 to 2011 the Supreme Court president.Irmgard Griss has been a guest professor at the University of Graz, and from May 2013, a brokerage in consumer affairs.