Witkon was called to the
Middle Temple Bar in 1936 and to the Palestine Bar in 1937. From 1937 to 1948, Witkon was a lawyer in private practice in Palestine. He worked as an attorney for
S. Horowitz & Co., one of the country's most prestigious law firms. Upon Israeli independence in 1948, Witkon became a judge and was appointed President of the Jerusalem District Court. In 1951, he was appointed to be a temporary judge on the Israeli Supreme Court, and his appointment was made permanent in 1954. Witkon was considered the court's premier expert on tax law. He served as a lecturer on tax law at the
Hebrew University of Jerusalem and authored a book on Israeli tax law that is considered one of the foundational texts on the topic in Israel. Witkon was one of the Supreme Court judges who heard
Adolf Eichmann's appeal in 1962. He chaired the
Central Elections Committee during the
1969 Israeli legislative election. He retired from the bench in 1980 upon reaching the mandatory retirement age. ==References==