Other Malpractice Theories

A client who loses a claim through a lawyer's failure will usually plead negligence, the claim whose four elements (duty, breach, causation, damages) occupied the last section. The same facts often support other theories. Malpractice suits are commonly classified as claims for negligence or for breach of fiduciary duty,¹ and a lawyer's neglect also violates the duty in Rule 1.3 to act with reasonable diligence and promptness in representing a client.² Three alternatives deserve separate treatment, each matched to a particular kind of conduct:

breach of fiduciary duty, which fits a lawyer who mishandles the client's money or property;
misrepresentation, which fits a lawyer whose false statement the client relied on to the client's loss; and
breach of contract, which fits a lawyer who fails to do what the engagement agreement promised.

Whichever theory the complaint names, the client must still connect the lawyer's conduct to a real loss. The label matters mainly at the edges, so a careful analysis lists every theory the facts support and tests each against the negligence claim as the baseline.

Fiduciary Duty Claims: When the Lawyer Holds the Client's Property

In most cases the choice between negligence and fiduciary breach makes no substantive difference, although in some states it may affect the applicable statute of limitations.³ The fiduciary label earns separate treatment because of one fact pattern that negligence describes poorly: the lawyer's custody of the client's money or property.

A fiduciary holds another's property or confidence on terms that require acting for the other's benefit. A lawyer becomes one in a practical way. Clients hand over retainer deposits, settlement checks, and original documents, and the lawyer holds them until they are needed. The client usually cannot see where the money sits, and cannot tell whether a settlement check went into a separate account or toward the lawyer's rent. Because the client cannot monitor the custody, the law demands more of the lawyer: treat entrusted property as the client's, keep it identifiable, and use it only for the client's purposes. Negligence asks whether the lawyer's work matched professional custom, so it evaluates skill and diligence, and it fits poorly a lawyer who is technically competent but treats the client's money as a convenience. Fiduciary law asks whether the lawyer honored the trust.

Commingling, the mixing of client funds with the lawyer's own, is the standard example, and the safekeeping rule (Model Rule 1.15) requires a lawyer to keep the two apart. Once client money sits in the lawyer's operating account, it is exposed to the lawyer's spending, to the lawyer's creditors, and to ordinary bookkeeping errors, and no one can easily reconstruct whose dollars are whose. Separation prevents those risks before any of them arises.

One act thus travels on two tracks. Discipline asks whether the lawyer broke the profession's minimum standards, and the violation is complete when the funds are mixed. A civil claim seeks compensation, so it turns on the client's resulting loss. The fiduciary theory gives the client a route into court even without a broken promise in the engagement letter or a lapse of skill that an expert would condemn: the client points to a breach of trust.

Exam stems test the edge of this theory. Suppose a stem describes a lawyer who let a filing deadline pass and adds that the client sues for breach of fiduciary duty. If the lawyer never held client funds or property, the lapse is a failure of care, and the claim is negligence whatever it is called. The label adds nothing except a possible change in the limitations period in some states.⁴ The commingling lawyer and the lawyer who missed the deadline both injured a client, and custody is what separates them. Had the second lawyer also spent the client's advance deposit on personal expenses, a fiduciary claim would arise from the spending and not from the missed date.

Fraud and Misrepresentation: When the Lawyer Hides the Lapse

A lawyer who has let a matter lapse is often tempted to hide the lapse, and the lie creates a second wrong. The earlier discussion of misleading the client treated a false progress report as a disciplinary violation distinct from the neglect behind it. The same report has a civil side: a client harmed by a lawyer's fraud or misrepresentation may sue in tort, and the claim stands beside the negligence claim for the neglect itself. The neglect breaches the Rule 1.3 duty of diligence and promptness,⁶ and the false report is a separate wrong.

A misrepresentation is a false statement of fact that the listener relies on to the listener's detriment. Reliance is the mechanism of harm, because a person who believes a matter is handled stops taking the steps that would protect it. A client cannot see the state of the file, so the lawyer's report is often the client's only window. A client told that the complaint is on file has no reason to hire other counsel, demand the file, or check the docket, and the time in which those steps could have saved the claim runs out. Negligence asks whether the lawyer's skill and care matched professional custom. Misrepresentation asks what the lawyer said, whether it was false, and what the client did because of it, which suits the facts when the lawyer's work was not merely careless but concealed.

The claim has limits that keep it from reaching every unwelcome conversation between lawyer and client.

These variants differ from the first lawyer in whether the client was told something false and then lost something because of it. A common exam error is to treat the lie as an aggravating detail in the diligence analysis. A better answer sorts the facts into separate wrongs: neglect under Rule 1.3, the false report as its own disciplinary violation, and the civil theories available to the client. The civil claim still requires that reliance caused a compensable loss, so the client must connect the false report to the lost claim, and the causation and damages inquiries studied earlier apply here as well.

Contract Claims: When the Lawyer Breaks a Promise

The attorney-client relationship begins in a contractual transaction, yet the malpractice action ordinarily is asserted as a claim sounding in tort,⁸ which is why negligence has occupied most of this chapter. A client is not confined to that framing and may instead sue for breach of contract, arguing that the lawyer failed to do something the lawyer agreed to do. The claim takes two forms. An express contract claim rests on a promise the parties actually made, and an implied contract claim, recognized in some states, rests on a promise the law reads into the relationship.

Where the parties have an agreement, it usually specifies the lawyer's basic duties and the scope of the undertaking.⁹ That changes the question a court asks. A negligence claim measures the lawyer against what lawyers of ordinary skill commonly do, so the client must first establish what the standard required. An express contract claim measures the lawyer against the lawyer's own undertaking. The agreement itself answers what was owed, and the client's task is to show the lawyer did not do it. The parties chose these terms for themselves, and a client who hired a lawyer on the strength of a particular promise relied on that promise.

Proving the breach does not finish the client's case, because the contract theory must still connect the lawyer's failure to a real loss. The client in that scene must show that the lost claim had value, meaning that a timely complaint would very likely have produced a recovery. The causation and damages inquiries of the negligence analysis apply in the same way. The contract theory changes how the duty is proved, and the client still has to show what the breach cost.

Many engagement agreements say much less. They describe the matter and the fee and leave out any promise about timing or about the quality of the work. Some states fill that silence with an implied contract claim, which rests on the idea that every representation carries an implied promise by the lawyer to use reasonable care. The reason for implying the promise is practical: clients rarely negotiate care terms, and the law supplies the term a client who hired a lawyer would expect. Because the implied promise is one of reasonable care, the claim measures the lawyer against a standard that closely resembles the negligence standard. It adds a contract label to a negligence-type showing and does not open a separate route to recovery. Not every state recognizes the claim.

The two clients lost the same kind of claim in the same way, and what separates their contract theories is whether the agreement contained a specific promise. The first can point to a term the lawyer broke. The second can only argue that the law implies a promise, which works in some states and fails in others. An exam stem that quotes or summarizes an engagement letter often tests whether you look for such a promise, usually a task and a date. When the letter contains one, the express claim is available. When it is silent, the answer turns on whether the state recognizes an implied claim, and negligence stays available either way. The contract label does not displace the tort framing that ordinarily governs malpractice actions.