An Associate Justice of the Supreme Court is one of the eight members of the Court who serve alongside the Chief Justice, hearing cases, casting an equal vote on every decision, and handling emergency legal applications from an assigned federal circuit. The position was created by the Judiciary Act of 1789, carries life tenure, and requires nomination by the President and confirmation by the Senate. Each Associate Justice has the same vote on the merits as the Chief Justice; the Chief’s extra authority is largely administrative and ceremonial.
The Seat on the Court
Federal law fixes the Supreme Court at nine members: one Chief Justice and eight Associate Justices.1Office of the Law Revision Counsel. 28 USC 1 – Number of Justices; Quorum The Constitution itself does not specify a number, and Congress has changed the Court’s size several times, settling on nine in 1869.2Supreme Court of the United States. The Court as an Institution Six justices make a quorum, so the Court can still decide cases with recusals or a vacancy, though a 4–4 split can leave the lower court’s ruling in place.
Internally, the Court runs on seniority tied to each justice’s commission date. Seniority sets bench seating, the order of speaking at private conference, and the order of voting. The most junior Associate Justice picks up small housekeeping duties by tradition: answering the door at the private conference (no staff are allowed in), taking notes, and sitting on the cafeteria committee.
Who Can Become an Associate Justice
Article III creates the Supreme Court but says nothing about qualifications.3Legal Information Institute. US Constitution Article III There is no minimum age, no citizenship requirement, no law degree prerequisite, and no requirement that a nominee already be a judge. By contrast, the presidency requires natural-born citizenship and a minimum age of 35.
In practice, every justice appointed in more than a century has been a lawyer, and most have been federal judges. The White House conducts extensive vetting of a candidate’s judicial temperament, legal philosophy, past writings, finances, and personal background, with the Department of Justice and the FBI playing central roles.
Nomination and Confirmation
The President selects a nominee under the Appointments Clause of Article II, which requires “the Advice and Consent of the Senate.”4Constitution Annotated. Overview of Appointments Clause The Senate Judiciary Committee then investigates, holding public hearings over several days that cover constitutional interpretation, prior rulings, and personal conduct. Legal scholars, bar association representatives, and members of the public may testify.5U.S. Senate. About Judicial Nominations The committee then reports the nomination to the full Senate with a favorable, unfavorable, or no recommendation. An unfavorable report does not block a floor vote.
A simple majority of senators present and voting confirms the nominee. That has not always been enough. Before April 2017, opponents could filibuster a Supreme Court nomination, and ending debate required 60 votes under Senate Rule XXII. In 2017 the Senate reinterpreted the rule to allow cloture on Supreme Court nominations by simple majority, mirroring a 2013 change for lower-court nominees.6Congress.gov. Senate Proceedings Establishing Majority Cloture for Supreme Court Nominations A nominee today can be confirmed with as few as 50 votes plus the Vice President breaking the tie.
Once confirmed, the new justice takes two oaths: the constitutional oath required of all federal officers and a separate judicial oath to “administer justice without respect to persons, and do equal right to the poor and to the rich.”7Office of the Law Revision Counsel. 28 USC 453 – Oaths of Justices and Judges
What the Job Actually Involves
Deciding Which Cases to Hear
The Court controls most of its own docket. Losing parties in the lower courts file petitions for a writ of certiorari asking the Court to review their case. About 7,000 petitions arrive each year, and the Court agrees to hear roughly 100 to 150. Under the Rule of Four, at least four justices must vote to grant review before a case moves forward.8Legal Information Institute. Writ of Certiorari
Argument, Conference, and Opinions
Cases that survive certiorari proceed to briefing and oral argument, where justices question each side’s attorneys and press the limits of their legal positions. The justices then meet in a private conference, with no clerks, staff, or recording devices present, to discuss the case and take a preliminary vote.
Opinion assignment follows a strict rule. If the Chief Justice is in the majority, the Chief assigns the opinion. If the Chief is in dissent, the most senior Associate Justice in the majority makes the assignment. This gives senior Associate Justices real influence, because the author shapes how broadly or narrowly a rule applies. Justices who agree with the result but reason differently can write concurrences; those who disagree write dissents. A dissent has no binding force, but a strong one can lay the groundwork for a future majority to change direction.
Circuit Justice Duties and Emergency Applications
Each Associate Justice is also assigned to one or more federal circuits as a Circuit Justice.9Office of the Law Revision Counsel. 28 USC 42 – Allotment of Supreme Court Justices to Circuits In that role, the justice handles emergency applications arising from the assigned circuit, including requests for stays of execution, temporary injunctions, and bail pending appeal. Applications are filed with the Clerk of the Supreme Court and routed to the assigned justice, who can grant or deny the request alone or refer it to the full Court. If the assigned Circuit Justice is unavailable, the application goes to the next most junior justice who is available.10Legal Information Institute. Supreme Court Rule 22 – Applications to Individual Justices A party whose application is denied may renew it with another justice, but the Court discourages this unless the first denial was explicitly without prejudice.
Pay
Associate Justices earn an annual salary of $306,600 as of 2026, compared with $320,700 for the Chief Justice.11United States Courts. Judicial Compensation Article III prohibits Congress from reducing a sitting justice’s pay, though salaries are periodically adjusted upward.3Legal Information Institute. US Constitution Article III
Ethics, Disclosure, and Recusal
Associate Justices file annual financial disclosure reports listing outside income, investments, gifts, and reimbursements.12Supreme Court of the United States. Code of Conduct for Justices of the Supreme Court of the United States Since the Courthouse Ethics and Transparency Act took effect in 2022, they must also report any securities transaction over $1,000 within 45 days, with reports available in a public online database. Late filings can carry a $200 penalty.
The Court’s Code of Conduct, adopted in November 2023, directs justices to follow the Judicial Conference’s gift regulations. A justice may accept reasonable compensation and expense reimbursement for outside activities such as lectures, teaching, or writing, provided the source does not create an appearance of influencing official duties. Reimbursement is limited to actual travel, food, and lodging costs.
Federal law requires a justice to step aside from a case when their impartiality “might reasonably be questioned.” Specific triggers include a personal financial interest in the outcome, a close family member who is a party or counsel, prior involvement as a lawyer or government adviser in the matter, and personal bias toward a party. Parties cannot waive these specific grounds, though they can waive the broader appearance ground after a full disclosure on the record.13Office of the Law Revision Counsel. 28 USC 455 – Disqualification of Justice, Judge, or Magistrate Judge Each justice decides their own recusal questions, and no other body reviews the decision. The 2023 Code of Conduct is framed as recommendations rather than binding rules and carries no penalty for noncompliance, a self-policing model that has drawn sustained criticism.
How Long They Serve and How They Leave
Article III grants federal judges, including Associate Justices, the right to hold office “during good Behaviour,” which in practice means for life or until they choose to leave.14Legal Information Institute. Constitution Annotated – Article III Section 1 – Good Behavior Clause Overview A justice who issues an unpopular ruling cannot be fired by the President or punished by Congress through a pay cut.
Voluntary retirement follows the “Rule of 80”: age plus years of federal judicial service must total at least 80, with a minimum age of 65 and at least 10 years of service. The qualifying combinations are:
- Age 65 with 15 years of service
- Age 66 with 14 years of service
- Age 67 with 13 years of service
- Age 68 with 12 years of service
- Age 69 with 11 years of service
- Age 70 with 10 years of service
A justice who meets the threshold and fully retires receives a lifetime annuity equal to the salary at retirement.15Office of the Law Revision Counsel. 28 USC 371 – Retirement on Salary; Retirement in Senior Status Alternatively, a justice can take senior status, stepping back from regular active service while retaining the office and continuing to receive the full salary of a sitting justice. A retired justice in senior status may be designated by the Chief Justice to perform judicial duties in any federal circuit, though not on the Supreme Court itself.16Office of the Law Revision Counsel. 28 USC 294 – Assignment of Retired Justices or Judges to Active Duty Retirement is a clean break; senior status keeps the justice in the federal judicial system with a lighter workload.
The only way to remove an Associate Justice involuntarily is impeachment. Article II, Section 4 provides that all civil officers “shall be removed from Office on Impeachment for, and Conviction of, Treason, Bribery, or other high Crimes and Misdemeanors.”17Constitution Annotated. Article II Section 4 – Overview of Impeachment Clause The House impeaches by simple majority, and the Senate convicts by a two-thirds vote of senators present. Only one Supreme Court justice has ever been impeached, Samuel Chase in 1804, and the Senate acquitted him. No justice has ever been removed from office through this process.