Misfeasance is the improper or negligent performance of an act that the person had a legal right to perform.1Legal Information Institute. Misfeasance The authority to act was there; the execution went wrong and someone was harmed as a result. A surgeon who operates on the wrong limb, a pharmacist who fills a prescription with the wrong drug, or a financial advisor who invests client funds in prohibited assets has committed misfeasance. The concept matters because it occupies a specific space in the law: between doing something you had no right to do at all and failing to do anything when you should have.
How Misfeasance Differs From Malfeasance and Nonfeasance
These three terms describe different ways a person with a duty can cause harm, and mixing them up derails claims before they begin. The distinction turns on whether the person acted, how they acted, and whether the act itself was lawful.
Misfeasance is a lawful act performed improperly. A city engineer with authority to approve building permits who reviews an application carelessly and signs off on a structurally dangerous design is committing misfeasance.1Legal Information Institute. Misfeasance The approval was within the engineer’s power; the careless review is the problem.
Malfeasance is an act that was unlawful or outside the person’s authority from the start. A public official accepting bribes to award contracts is committing malfeasance because the conduct is illegal no matter how carefully it’s carried out.
Nonfeasance is a failure to act when a legal duty required action. A paramedic on duty who ignores a collapsed patient may be liable for nonfeasance. One important limit: in tort law there is generally no duty to protect strangers from harm unless you helped create the danger or have a special relationship with the person at risk.2Legal Information Institute. Nonfeasance A bystander at a car accident has no legal obligation to help. A paramedic on shift does.
Misfeasance always involves an affirmative act. The question is never whether the person should have done something; it is whether they did it badly enough to cause harm.
What You Have to Prove in a Misfeasance Claim
A misfeasance claim follows the general shape of a negligence case, but the lens narrows to how someone performed an authorized action. Four elements have to come together.
A duty of care. The defendant must have owed the claimant a legal duty, usually arising from a professional relationship, an employment role, or a position of authority where one person depends on the competence of another. Doctor and patient, attorney and client, financial advisor and investor, government official and citizen are the common patterns.3Legal Information Institute. Negligence
Breach through an improper act. The defendant must have performed a specific action badly. This is where misfeasance parts ways with nonfeasance: the claim centers on something the defendant actually did, not something they failed to do. A doctor who prescribes the wrong dosage has taken an affirmative step that went wrong.
Measurable harm. Sloppy work that causes no injury does not support a claim. Courts look for concrete losses: medical expenses, financial damage, property destruction, lost income.
Causation. The improper act must have directly caused the harm. Would the injury have happened without the defendant’s flawed performance? This link is often the hardest piece to establish, because defendants will argue the harm would have occurred anyway or came from a different source.
The Standard of Proof
Misfeasance is a civil matter, so the claimant has to prove the case by a preponderance of the evidence. That means convincing the court it is more likely than not that the defendant’s improper performance caused the harm.4Legal Information Institute. Preponderance of the Evidence That is a much lower bar than the “beyond a reasonable doubt” standard in criminal cases. The scales just have to tip past the midpoint.
Deadlines That Can Kill a Claim
Every state imposes a statute of limitations on civil tort claims, and misfeasance is no exception. Depending on the jurisdiction and the type of professional involved, deadlines typically run from one to four years after the harm occurs or is discovered. Miss the window and the claim is usually barred for good, no matter how strong it would have been. Checking your state’s specific rules early is one of the most important steps in a potential case.
Where Misfeasance Typically Shows Up
Misfeasance arises wherever someone exercises professional authority carelessly. A few settings account for most real cases.
In medicine, misfeasance covers a surgeon operating on the wrong limb, a pharmacist filling the wrong prescription, or a nurse giving the correct drug at the wrong dose. The professional was authorized to perform the procedure; the failure was in execution. These cases typically run as medical malpractice claims.
In law, an attorney who takes a case and then handles it negligently commits misfeasance. Missing a filing deadline, overlooking an obvious defense, or drafting a contract without a critical protection all qualify.
In finance, advisors, accountants, and fiduciaries can commit misfeasance by managing money improperly. An accountant who misapplies deduction rules on a tax return, or a trustee who invests estate funds in assets the trust forbids, had the authority to act but fell below professional standards in doing so.
In government work, a building inspector who conducts an inspection so carelessly that a serious code violation is missed, leading to a collapse, has committed misfeasance in the course of a duty they were empowered to carry out.
When the Defendant Is a Public Official
Suing a government employee for improper performance of their duties is harder than suing a private professional. In the United States, the main vehicle for holding state and local officials accountable is a federal civil rights claim under 42 U.S.C. ยง 1983, which allows lawsuits against anyone acting under government authority who deprives a person of their constitutional or legal rights.5Office of the Law Revision Counsel. 42 U.S. Code 1983 – Civil Action for Deprivation of Rights The statute reaches both intentional and negligent official conduct that violates rights.
Qualified Immunity
The biggest obstacle to personal liability for a U.S. public official is qualified immunity. This judicially created doctrine shields government employees performing discretionary duties from civil suits unless their conduct violated a “clearly established” constitutional right.6Congressional Research Service. Policing the Police: Qualified Immunity and Considerations for Congress Even when a court agrees the official acted improperly, the claim fails if no prior case with sufficiently similar facts put the official on notice that the conduct was unconstitutional. The doctrine is designed to give officials room for reasonable mistakes; critics argue it effectively immunizes all but the most egregious misconduct.
Sovereign Immunity
Beyond the individual’s qualified immunity, the government entity itself may be shielded by sovereign immunity, the common law principle that a government cannot be sued without its consent.7Legal Information Institute. Sovereign Immunity The federal government waived this protection for many tort claims through the Federal Tort Claims Act, and most states have enacted similar statutes. The waivers come with strings: short notice-of-claim deadlines, damage caps, and exceptions for discretionary government functions. Some jurisdictions require written notice within months of the incident, and missing that notice can permanently bar an otherwise valid claim.
When the Defendant Is a Corporate Director or Officer
Corporate directors and officers owe fiduciary duties to the company and, in some circumstances, to its creditors. Misfeasance here means exercising legitimate authority over company affairs improperly or negligently, causing financial harm. A board that approves a merger without investigating the target’s debts, or a CFO who moves corporate funds in violation of the company’s investment policy, can be personally liable.
These claims sharpen during insolvency. When a company fails, a liquidator or bankruptcy trustee often looks back at management decisions during the slide toward collapse. Directors who kept running risky operations after insolvency became probable, or who paid themselves bonuses while creditors went unpaid, face scrutiny for mismanaging what was left of the company.
The Business Judgment Rule
Corporate directors have a strong shield: the business judgment rule. It creates a presumption that directors made decisions in good faith, with reasonable care, and in the best interests of the corporation.8Legal Information Institute. Business Judgment Rule When the rule applies, the plaintiff has to show the director acted with gross negligence, bad faith, or a conflict of interest. If the presumption holds, the claim fails even if the decision turned out badly.
The rule protects honest mistakes in judgment. A board that considered the available information and chose a path that later proved costly is generally safe. The protection falls away when directors skip basic due diligence, ignore obvious red flags, or have a personal financial stake in the transaction. A director who votes to approve a deal with a company they secretly own is not making a protected business judgment.
Shareholder Derivative Suits
When corporate misfeasance harms the company itself rather than individual shareholders, the usual remedy is a shareholder derivative suit, in which a shareholder sues on behalf of the corporation against the directors or officers who caused the harm.9Legal Information Institute. Shareholder Derivative Suit Any recovery goes to the corporation’s treasury, not to the suing shareholder.
Filing one is not casual. The shareholder must have owned stock at the time of the misconduct and keep that ownership through the case. Before filing, the shareholder generally must make a written demand on the board asking it to address the problem and then wait 90 days for a response, unless the demand is rejected or waiting would cause irreparable harm.9Legal Information Institute. Shareholder Derivative Suit The board can also move to dismiss if a majority of disinterested directors determine, after a good-faith investigation, that pursuing the claim is not in the company’s best interest.
What a Court Can Order When Misfeasance Is Proven
The standard remedy is compensatory damages: money meant to put the injured party back in the financial position they held before the improper act. These damages can cover direct losses such as medical expenses, repair costs, and lost income, along with less tangible harms like emotional distress or reputational damage.
In corporate cases, the remedy often takes the form of restitution. A court can order a director or officer to repay misapplied funds to the company. When a liquidator proves that a director improperly transferred company assets, the court can require those assets or their value to be returned to the corporate treasury for distribution to creditors.
Professional consequences often matter as much as the money. A misfeasance finding can trigger license suspension or revocation, removal from a corporate board, or disqualification from serving as a company director in the future. For many defendants, those career consequences sting more than the damages award.