Definition
A dependent promise is a contractual promise that is conditioned on prior or concurrent performance by the other party. The promisor's obligation to perform does not arise — and cannot be enforced — until the other party has first fulfilled a corresponding obligation under the same agreement.
In other words, the two promises are linked: one serves as a condition precedent to the other. If the triggering performance never occurs, the dependent promisor is not in breach for failing to act, because the duty to perform never matured.
This concept sits at the heart of bilateral contract analysis. Courts asked to enforce a promise must determine whether that promise is dependent (conditional on the other side going first) or independent (owed regardless of what the other party does). The answer determines who bears the risk of non-performance and which party, if either, is in breach.
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Common Language
Modern common usage (Wiktionary): "Dependent" means contingent upon or relying on something else. A "promise" is a commitment to do or refrain from doing something.
Historical common usage (Webster's 1913): "Dependent" — hanging down; relying on something else for support; contingent. "Promise" — a declaration which binds the person who makes it to do or forbear a certain act.
The ordinary pairing of these words tracks the legal meaning closely, but the common usage misses the precise doctrinal work the phrase does. In law, a dependent promise is not simply a promise made with conditions attached — it is a technical classification that determines whether a party's failure to perform constitutes breach or merely the non-occurrence of a condition. That distinction triggers entirely different legal consequences and is not intuitive from ordinary usage alone.
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Common Confusion
DEPENDENT PROMISE vs. INDEPENDENT PROMISE: These are the two poles of a critical doctrinal divide. An independent promise must be performed regardless of whether the other party has performed — a party cannot withhold performance on an independent promise merely because the other side has not yet acted. A dependent promise, by contrast, allows the promisor to stand down until the condition is met. Misclassifying a promise as independent when it is dependent (or vice versa) can transform a party from a victim of breach into the breaching party. Historical courts frequently litigated this line; modern courts continue to do so in employment, real estate, and commercial contract disputes.
DEPENDENT PROMISE vs. CONDITION PRECEDENT: Closely related but not identical in usage. A condition precedent is the event that must occur before a duty matures; a dependent promise is the promise whose performance duty is subject to that condition. The condition precedent is the mechanism; the dependent promise is the obligation it governs. Some older sources use these terms interchangeably, which can cause confusion when reading historical materials.
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Why It Matters in Research
The dependent/independent promise distinction is one of the most consequential classifications in contract law, and researchers will encounter it in several contexts where the stakes are high.
In employment law, this classification appears in disputes over whether an employer's promise in a handbook or policy manual is enforceable, and whether employee performance (continued service, following procedures) is a condition precedent to that promise. The Law Mind Employment Encyclopedia entry on implied contract promises addresses this directly. Researchers tracing handbook-based claims should check whether courts in the relevant jurisdiction treat employer promises as dependent or independent — the answer shapes the entire breach analysis.
In historical sources, the vocabulary shifts. Older treatises (including the Hammond and Harris citations Bouvier relies upon) use "dependent covenant" and "dependent promise" somewhat interchangeably. When reading pre-20th-century contract cases or treatises, watch for "covenant" being used where modern drafters would write "promise," and check whether the court is analyzing dependency in the condition precedent sense or merely describing the subject matter of the promise.
The classification also appears in partnership and joint venture agreements, where obligations among partners may be structured so that one partner's duty to contribute depends on another's performance. Bouvier's citation to Hammond on Partnership signals this application.
Researchers should be alert to jurisdiction-specific doctrinal tests. Some courts approach dependency through the lens of "constructive conditions of exchange" — a term that does the same analytical work but appears in Restatement-influenced jurisdictions. If a historical source uses "dependent promise" and a modern case uses "constructive condition," they may be addressing the same doctrine.
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Historical Dictionary Support
Bouvier's definition is economical but accurate: a dependent promise is one the promisor need not perform until "some obligation contained in the same agreement has been performed by the other party." The phrase "contained in the same agreement" is doing important work — it limits the doctrine to mutual obligations arising from the same contract, not obligations in separate instruments.
Bouvier's cross-references to Hammond on Partnership and Harris on Contracts are the substantive analytical sources; the dictionary entry itself provides the label and the structural frame. Researchers needing depth should consult those treatises directly rather than relying on the Bouvier summary.
What Bouvier does not address: the question of substantial performance. Modern contract law generally holds that a dependent promise becomes due once the triggering party has substantially performed — perfect performance is not required to trigger the other side's obligation. This development postdates Bouvier's primary editions and will not appear there. Researchers working in modern disputes should not read Bouvier's formulation as requiring complete performance to trigger a dependent promise.
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Encyclopedia Cross-Reference
Breach of Implied Contract — Handbooks, Policies, and Promises (The Law Mind Employment & Labor Law Encyclopedia): Relevant when dependent promise analysis arises in the employment context, particularly where employer obligations under written policies are conditioned on employee conduct.
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