In Hamer v. Sidway (1891), the New York Court of Appeals held that giving up a legal right — even a right to do something harmful to yourself, like drinking or smoking — is valid consideration that makes a promise enforceable. An uncle promised his nephew $5,000 if he abstained from liquor, tobacco, swearing, and gambling until age 21; the nephew's forbearance was sufficient consideration, so the promise was an enforceable contract even though the uncle received no economic benefit.

This is the case your Contracts professor uses to blow up your instinct that a contract requires an exchange of money or things of value. It's short, the facts stick, and it drives home the single most important idea in the consideration unit: consideration is measured by whether the promisee gave something up, not by whether the promisor got anything. Learn this one cold — it anchors the entire consideration doctrine.

What is the case summary for Hamer v. Sidway?

Hamer v. Sidway, 124 N.Y. 538, 27 N.E. 256, was decided by the New York Court of Appeals (the state's highest court) in 1891. The dispute arose out of a promise made by an uncle to his nephew and reached the court as a suit by an assignee of the nephew's claim against the executor of the uncle's estate. The court held that the nephew's forbearance from certain lawful activities constituted valid consideration, making the uncle's promise to pay $5,000 an enforceable contract.

What are the facts of Hamer v. Sidway?

At a family gathering in 1869, William E. Story, Sr. (the uncle) promised his nephew, William E. Story, 2d, that if the nephew would refrain from drinking liquor, using tobacco, swearing, and playing cards or billiards for money until he turned 21, the uncle would pay him $5,000.

The nephew fully performed. He abstained from all of those activities until his 21st birthday. When he came of age, he wrote to his uncle stating he had kept the bargain and was entitled to the money. The uncle wrote back agreeing that the nephew had earned the $5,000, but said he would hold the money for the nephew — with interest — until the nephew was older and, in the uncle's view, better able to manage it. The nephew consented to this arrangement.

The uncle died about twelve years later without having paid the money. The nephew had, in the meantime, assigned his claim (it ultimately passed to the plaintiff, Louisa Hamer). The defendant, Sidway, was the executor of the uncle's estate. He refused to pay, arguing that the promise was unenforceable because there was no consideration — the uncle got nothing, and the nephew actually benefited by living a cleaner life.

What was the procedural history?

The plaintiff (as assignee of the nephew's claim) sued the executor of the uncle's estate to collect the $5,000 plus interest. The trial court found for the plaintiff. The intermediate appellate court (the General Term) reversed, holding there was no consideration. The New York Court of Appeals then reversed the intermediate court and reinstated the judgment for the plaintiff. Note the posture: the highest court is affirming that a valid contract existed.

What was the legal issue?

The precise question was whether the nephew's giving up of legal rights he was otherwise free to exercise — drinking, using tobacco, swearing, and gambling — constituted valid consideration sufficient to support the uncle's promise to pay $5,000, even though the uncle received no benefit and the nephew arguably benefited himself by abstaining.

What was the holding and rule?

Holding: Yes. The nephew's forbearance from activities he had a legal right to engage in was valid consideration. The uncle's promise was therefore supported by consideration and was an enforceable contract.

Rule (put this in your outline): Consideration exists where the promisee suffers a legal detriment — that is, gives up a legal right or refrains from doing something he is otherwise legally entitled to do — in exchange for the promise. It is not necessary that the promisor receive any benefit, profit, or advantage. Abandoning a legal right at the request of another is sufficient consideration, and courts will not inquire into whether the forbearance was actually valuable to the promisee.

What was the court's reasoning?

The defendant's argument rested on a benefit-focused theory of consideration: because the uncle got nothing and the nephew was actually better off for not drinking and gambling, no consideration existed. The court squarely rejected this.

The court, quoting an established definition, explained that consideration means either a right, interest, profit, or benefit to one party, or a forbearance, detriment, loss, or responsibility given, suffered, or undertaken by the other. The critical word is or: a legal detriment to the promisee is independently sufficient. You do not need both benefit and detriment.

The nephew had a legal right to drink, smoke, swear, and gamble. By restricting his lawful freedom of action — by giving up rights he was entitled to exercise — for a period of years, he suffered a legal detriment. That he may have benefited himself in a moral or health sense was irrelevant. The court declined to weigh whether the bargain was actually a good deal for the nephew: "It is enough that he restricted his lawful freedom of action within certain prescribed limits upon the faith of his uncle's agreement." The court also noted that courts do not measure the adequacy of consideration — they only ask whether legally sufficient consideration exists.

The court also touched on the later arrangement where the uncle held the money "in trust" for the nephew, but the core of the decision is the consideration point.

Why does Hamer v. Sidway matter?

This is the foundational case for the modern American definition of consideration. It cements the bargained-for legal detriment theory over the older, narrower benefit theory. In your Contracts course it sits at the front of the consideration unit, right where your professor is trying to dislodge the intuition that contracts require an exchange of money or economic value.

It pairs conceptually with the Restatement (Second) of Contracts § 71, which defines consideration as a performance or return promise that is bargained for. Hamer supplies the "legal detriment" half of the classic definition; the bargain requirement supplies the rest. Together they form the two-part test you'll apply on every consideration issue on the exam: (1) was there a legal detriment (or benefit), and (2) was it bargained for — sought by the promisor in exchange for the promise?

Cold-call prep: what will the professor ask?

This case gets picked apart in class. Have answers ready for each of these:

• "What was the consideration here? The uncle got nothing." — The consideration was the nephew's forbearance: giving up his legal right to drink, smoke, swear, and gamble. Benefit to the promisor is not required; a legal detriment to the promisee is sufficient.
• "But the nephew was better off not drinking — how is that a detriment?" — Legal detriment is measured legally, not by whether the person is actually worse off. He had a legal right to engage in those activities; giving up a legal right is a legal detriment regardless of whether abstaining improved his life.
• "What's the definition of consideration the court uses?" — A benefit to the promisor OR a detriment to the promisee. Stress the disjunctive 'or.' You need only one.
• "Did the court ask whether $5,000 was a fair price for not drinking?" — No. Courts do not weigh the adequacy of consideration. They only ask whether legally sufficient consideration exists.
• "Was this bargained for, or was it just a gift promise?" — This is the deeper question. The uncle sought the nephew's abstention in exchange for the promise; the abstention was the price of the promise. That's a bargain, not a gratuitous promise. (Compare this to a promise conditioned on something the promisor didn't actually want in exchange — that's the line between bargain and gift, and it's where Hamer meets § 71.)
• "Why couldn't this be a promise to make a gift?" — Because performance was requested and given as the price of the promise. Gift promises fail for lack of consideration; this promise had it.

How does Hamer v. Sidway show up on the exam?

On an issue-spotter, Hamer is the authority you cite when a party argues "there's no consideration because I got nothing out of it." The move is to spot a promisee who gave something up — abstained from something, waived a claim, promised not to sue, quit a job — and explain that forbearance is a legal detriment and therefore consideration.

The trap: Students confuse legal detriment with the promisor's benefit. If you write "there's no consideration because the promisor didn't gain anything," you've missed the whole point of Hamer. Always ask separately: did the promisee suffer a legal detriment? Benefit to the promisor is sufficient but not necessary.

The second trap: Spotting detriment but forgetting the bargain requirement. A legal detriment that wasn't bargained for (a condition on a gift, past consideration, an act the promisor didn't seek in exchange) is not consideration. Hamer supplies detriment; § 71 supplies bargain. A complete exam answer discusses both. Where a professor gives you facts that look like Hamer but the forbearance wasn't actually requested in exchange, that's a gift promise dressed up as a bargain — call it out.

What are the related cases?

• Kirksey v. Kirksey — a promise to house a widow that failed for lack of consideration because it was a conditional gift, not a bargain. The counterpoint to Hamer.
• Hamer v. Sidway + Restatement (Second) § 71 — read together for the two-part bargained-for-detriment test.
• Fiege v. Boehm — forbearance from suing (dropping a claim) as consideration, even where the underlying claim turns out to be invalid, so long as asserted in good faith.
• Pennsy Supply v. American Ash — a modern application of the bargained-for consideration requirement.