Definition
Misconduct is wrongful, improper, or unlawful behavior that falls short of what a role, position, or legal duty demands. The term has no single fixed legal meaning; its content shifts substantially depending on context. Three principal uses appear across legal sources:
1. Misconduct in judicial proceedings. Improper conduct by a participant in the administration of justice — jurors, arbitrators, attorneys, witnesses — that prejudices the rights of parties or corrupts the outcome of the proceeding. Juror misconduct (unauthorized contact with parties, concealment during voir dire, improper deliberation) and arbitrator misconduct (bias, refusal to hear evidence) are the classic applications. A verdict or award obtained under such conditions may be set aside.
2. Professional misconduct. A dereliction of duty by a person holding a professional license — most commonly an attorney, physician, or public officer — that causes harm to a client, patient, or the public. In the attorney context this merges with disciplinary law; the term triggers bar discipline, not merely civil liability.
3. Employment misconduct. In labor and employment law, particularly unemployment insurance, misconduct is a defined standard governing whether a discharged employee is eligible for benefits. This usage is a distinct legal term of art: not all employee wrongdoing qualifies, and courts have developed tests to distinguish misconduct (which disqualifies) from poor performance, incompetence, or simple workplace friction (which does not).
Common Language
Modern common usage (Wiktionary): Behavior that is considered unacceptable; also a penalty or write-up for improper behavior.
Historical common usage (Webster's 1913): Wrong conduct; bad behavior; mismanagement.
The gap matters. In ordinary English, misconduct is a moral judgment — roughly synonymous with misbehavior. In law, the term carries procedural consequences and is often defined by statute or case law within a specific domain. Whether an employee's acts rise to "misconduct" for unemployment purposes, or whether a juror's behavior constitutes "misconduct" warranting a new trial, is a legal determination made against an established standard, not a general moral assessment.
Recognized Forms
/SUBTYPES
Juror misconduct. Independent research, outside communications, failure to disclose bias, or improper deliberation by a juror. Grounds for new trial or post-conviction relief.
Arbitrator misconduct. Partiality, corruption, refusal to hear material evidence, or other conduct compromising the integrity of the arbitration. Grounds for vacating an award.
Attorney misconduct. Violation of professional conduct rules; triggers bar discipline and may affect the underlying proceeding (e.g., prosecutorial misconduct as grounds for reversal or dismissal).
Prosecutorial misconduct. A subset of attorney misconduct specific to government prosecutors — improper argument, suppression of evidence, witness coaching. Implicates constitutional due process.
Official misconduct / misconduct in office. Wrongful performance of an authorized act, or performance of an unauthorized act, by a public officer. Anderson notes the term applies to wrongful exercise of actual authority, distinguishing it from acts entirely outside the officer's power.
Employment misconduct. A statutory or judicially defined threshold in unemployment compensation law. Typically requires a willful or deliberate disregard of the employer's interests or standards, distinguishing misconduct from mere inefficiency.
Why It Matters in Research
The term's context-dependence is its primary research trap. A search for "misconduct" across a legal corpus will surface results from at least four distinct doctrinal areas — evidence and procedure (juror misconduct), professional responsibility (attorney misconduct), constitutional criminal law (prosecutorial misconduct), and labor/benefits law (employment misconduct) — each operating under different definitions and different legal consequences. Cross-domain results will appear relevant but apply inapplicable standards.
The employment misconduct definition is particularly isolated from the others. Unemployment insurance statutes vary by jurisdiction, and courts within the same jurisdiction often apply different verbal formulations. A finding of "misconduct" for unemployment purposes carries no necessary implication for a parallel wrongful termination or tort claim.
In historical sources, misconduct appears predominantly in the judicial-administration sense: jurors and arbitrators. The employment sense is largely absent from 19th-century dictionaries and develops through 20th-century statutory and administrative law. Researchers working in historical materials should not expect the employment definition to appear.
Prosecutorial misconduct as a constitutional doctrine — tied to due process, Brady obligations, and Napue — is underrepresented or entirely absent in the historical dictionaries. Bouvier and Black gesture at the justice-administration framework but not at the constitutional remedy structure that develops in 20th-century federal courts. Supplement historical dictionary research with the encyclopedia entries for this strand.
Anderson's note that misconduct in office applies to wrongful performance of an authorized act — not simply unauthorized acts — is a meaningful distinction that affects how official misconduct is pled and proven, and it is easily overlooked.
Historical Dictionary Support
Black's (both editions) and Bouvier substantially agree: misconduct centers on conduct by persons involved in the administration of justice — jurors and arbitrators — that prejudices the parties or the outcome. Black's extends the definition to professional dereliction by attorneys. Bouvier ties the definition expressly to the remedy: a verdict or award may be set aside.
Anderson adds the misconduct-in-office gloss, clarifying that the term reaches wrongful exercise of actual authority — not only unauthorized acts — and cross-references misdemeanor, signaling that official misconduct historically overlapped with criminal liability.
Rapalje & Lawrence provides only a page reference with no substantive definition, offering no additional content here.
None of the historical sources address employment misconduct or prosecutorial constitutional misconduct. These are genuine gaps, not oversights in summarization. Researchers relying solely on the historical dictionaries will have an incomplete picture of how the term functions in modern practice.
Jurisdictional Note
Employment misconduct standards vary significantly across states, with some requiring willful disregard of employer interests and others applying broader or narrower formulations. Prosecutorial misconduct doctrine is primarily federal constitutional law but state courts apply parallel protections under state constitutions. Official misconduct is defined by state criminal statutes and varies in scope.
Encyclopedia Cross-Reference
Prosecutorial Misconduct and Brady Obligations — Law Mind Criminal Law Encyclopedia
Disqualification — Misconduct, Voluntary Quit, and Refusal of Suitable Work — Law Mind Employment & Labor Law Encyclopedia