 Between 1976 and 1983 Kriegler served intermittently as an acting judge and in 1984 was appointed to the Transvaal Provincial Division of the Supreme Court.Between 1990 and 1993 he acted in the Appellate Division, then the highest court in the country, and was permanently appointed to its bench in 1993.The following year he was appointed a founding justice of the newly formed Constitutional Court of South Africa and completed his term of office in 2002.