Written by attorneys · grounded in primary & secondary sources — see below
An official adjudicative role exercised by a judge or other authorized officer when resolving disputes, applying law to facts, and rendering decisions within the scope of assigned duties.
Sources & Authorities
How it applies
Common Examples
6
Judge Mediates Outside Official Role
Judge Patel agreed to serve as a paid mediator in a commercial dispute between two local businesses even though the matter was not assigned to her court. The parties later challenged her participation when one side sought to enforce the mediated agreement. The ethics board found that Patel had performed a judicial function apart from her official duties without express legal authorization.
Article I Tribunal Adjudicates Violations
Congress created a specialized board to set safety standards for trucking firms and to adjudicate alleged violations in formal hearings. The board imposed fines after finding that Jensen Farms had falsified inspection records. The company challenged the board's authority on Article III grounds, but the court upheld the hybrid structure because the board performed judicial functions as part of a valid legislative program.
Select any source to read its text and confirm it supports the definition.
Cases
Statutes
Model Codes
Restatements
Hornbooks
Court Limits Review of Executive Action
New York Times sought an injunction barring publication of classified documents. The district judge declined to examine the executive's national-security claims in detail. The Supreme Court affirmed that the judicial function in foreign-affairs matters is narrowly restricted under separation of powers, leaving the injunction request largely to the political branches.
New York Times Co. v. United States403 U.S. 713 (1971)
Immunity for Presidential Acts
Former President Nixon was sued for damages after directing the firing of a whistleblower. The Court held that absolute immunity attached only when the President performed a judicial function akin to that of a judge. Because the firing was an executive act, immunity did not apply and the suit could proceed.
Richard Nixon v. A. Ernest Fitzgerald457 U.S. 731 (1982)
Prior Restraint on Publication
A state statute allowed courts to enjoin newspapers from publishing allegedly malicious articles. Near challenged the injunction as prior restraint. The Supreme Court ruled that the statute improperly assigned a judicial function to suppress speech before any finding of liability, violating the First Amendment.
Near v. Minnesota ex rel. Olson283 U.S. 697 (1931)
Military Contractor Defense
A helicopter crash killed a Marine. The widow sued the manufacturer. The Court recognized a federal common-law defense when the contractor followed government specifications. It treated the design decision as an exercise of governmental discretion akin to a judicial function, shielding the contractor from state tort liability.
Boyle v. United Technologies Corp.487 U.S. 500 (1988)
Common questions
Frequently Asked
4
When does a judge's outside activity violate the duty to give precedence to judicial functions?+
A judge violates the duty when extrajudicial work repeatedly displaces core judicial tasks such as timely hearings and rulings. Scheduling delays caused by film production or clinical shifts demonstrate that outside activities have taken priority over official duties.
Supporting sources
Does unequal treatment of witnesses during trial violate the duty to perform judicial functions fairly?+
Yes. Allowing one side's witness to testify in narrative form while repeatedly interrupting and limiting the opposing witness shows apparent partiality. The judge must manage proceedings impartially toward all parties and witnesses.
Supporting sources
May Congress assign both rulemaking and adjudication to an Article I body without violating Article III?+
Yes. Hybrid tribunals that combine administrative and judicial functions within a regulatory scheme are permissible even when their members lack life tenure and salary protection.
Supporting sources
When is a judge absolutely immune from defamation liability for statements made on the bench?+
A judge enjoys absolute privilege when publishing defamatory matter that has some relation to a matter before the court and occurs while performing a judicial function.
Supporting sources
457 U.S. 731 (1982)Constitutional Law
…v. United States , 408 U. S. 606 (1972). Judges are absolutely immune from liability for damages, but only when performing a judicial function, and even then they are subject to criminal liability. See Dennis v. Sparks , 449 U. S. 24, 31 (1980); O'Shea v. Littleton , 414 U. S. 488, 503 (1974). The absolute immunity of…