Voting on Cases
The most significant duty of an Associate Justice is considering and voting on cases before the court.
Associate Justices are also assigned to write the majority opinion of the court in particular cases throughout each term of the court.
Each Associate Justice is assigned to oversee one of the Appellate Court Circuits in the United States. When an emergency appeal is made from a particular Circuit, it is sent initially to the assigned Associate Justice.
An Associate Justice has the power to issue what is known as an "emergency stay." An emergency stay most commonly is issued in the case of an individual facing an imminent execution.
Conference Room Door
An interesting tradition gives to the junior Associate Justice the task of answering the conference door if anyone knocks on it while the Justices are meeting.
A retired Associate Justice remains on the court on "senior status." An Associate Justice on senior status maintains chambers at the Supreme Court and can serve on Court of Appeals cases.