The Supreme Court Justices can hold office as long as they maintain a good behavior or are not impeached. They have the right to hold office for life. The The Supreme Court Justice has the right to resign or retire when he or she feels the necessity. This is the power given to the Justices of the Supreme Court by Article III, Section 1 of the United States constitution. If any case of treason, or bribery is found against the Justices of the supreme court then they can be impeached and removed from their post permanently. It is almost the same as in the case of the President.
