Sources of Obligation

An obligation is a juridical necessity to give, to do, or not to do; its source matters because the source determines the governing rules, the degree of fault required, the persons liable, the available defenses, and the measure of recovery.

Article 1157 of the Civil Code gives the recognized sources of civil obligations: law, contracts, quasi-contracts, acts or omissions punished by law, and quasi-delicts. The enumeration is controlling because a demand enforceable in court must be traced to a legally recognized source, not merely to sympathy, morality, convenience, or an informal expectation.

The same factual event may appear to involve more than one source, but the source invoked fixes the theory of liability. A negligent delivery of goods, for example, may be pleaded as breach of contract if the duty came from an agreement, as quasi-delict if an independent legal duty of care was violated, or as delict if the negligent act is also punished by penal law.

Function of the Source

The source identifies why the debtor is legally bound. In obligations arising from law, the binding force comes directly from a statute or rule; in obligations arising from contracts, it comes from the meeting of minds; in quasi-contracts, it comes from equity as embodied in law; in delicts, it comes from the civil consequences of a punishable act; and in quasi-delicts, it comes from fault or negligence causing damage.

The source also determines the primary law that governs the obligation. Obligations derived from law are governed first by the law that creates them, contractual obligations by the agreement and the law on contracts, quasi-contractual obligations by the rules against unjust enrichment, obligations from crimes by penal law and civil liability rules, and quasi-delictual obligations by the law on extra-contractual negligence.

A duty may be moral, social, or natural without being a civil obligation enforceable by action. A natural obligation may support retention of a voluntary payment or performance, but it does not by itself authorize compulsion before voluntary fulfillment.

Law

An obligation arising from law is imposed directly by a legal provision, without need of the obligor's consent. The Civil Code states that obligations derived from law are not presumed, so the claimant must identify the law that creates the demandable duty.

The law may impose duties because of status, family relations, ownership, public policy, statutory regulation, or a special legal relationship. Examples include the duty to support certain relatives, the obligation of co-owners to share necessary expenses, the duty to pay taxes under tax law, and statutory liabilities imposed on particular persons or entities.

When an obligation is created by a special law, that special law supplies the principal rules on existence, scope, performance, breach, defenses, and remedies. The Civil Code applies suppletorily when it is consistent with the special law and when the special law leaves a matter unresolved.

Because obligations from law are not presumed, courts do not create them from fairness alone. Equity may influence interpretation or remedy, but a civil obligation must still rest on a constitutional provision, statute, rule, regulation with legal force, or recognized legal principle.

Contracts

A contract is a meeting of minds between two or more persons whereby one binds himself, with respect to another, to give something or to render some service. Once perfected, a valid contract has the force of law between the parties and must be complied with in good faith.

The source of contractual obligation is consent, but consent operates within legal limits. Parties may establish stipulations, clauses, terms, and conditions as they deem convenient, provided they are not contrary to law, morals, good customs, public order, or public policy.

Contractual obligations are generally relative. They bind the parties, their assigns, and heirs, except when rights and obligations are not transmissible by nature, by stipulation, or by law.

A third person generally cannot demand performance of a contract to which he is not a party, but a stipulation in favor of a third person may be enforceable by that third person when the contracting parties clearly and deliberately conferred a benefit upon him and he communicated acceptance before revocation.

Contractual liability is based on breach of a promised prestation. The creditor ordinarily need not prove a separate legal duty outside the contract because the contract itself identifies the duty, the debtor, the creditor, and the prestation due.

Good faith performance requires more than literal compliance when literal compliance defeats the agreed purpose or abuses the other party's justified expectations. Bad faith in contractual performance may affect damages, interest, attorney's fees, and the availability of equitable relief.

Quasi-Contracts

A quasi-contract is a juridical relation arising from lawful, voluntary, and unilateral acts, to the end that no one shall be unjustly enriched or benefited at the expense of another. It is not a contract because there is no meeting of minds, but the law treats the situation as creating an obligation to restore, reimburse, indemnify, or account.

The classic forms are negotiorum gestio and solutio indebiti. In negotiorum gestio, a person voluntarily manages the property or affairs of another without authority, creating duties of diligence, continuation when required by circumstances, reimbursement of useful or necessary expenses, and accountability for benefits obtained.

In solutio indebiti, a person receives something when there is no right to demand it and the delivery was made through mistake. The recipient must return what was unduly received because retention would unjustly enrich him at the expense of the payor.

The governing principle of quasi-contract is restitution rather than punishment. The remedy normally aims to return the parties to the position required by justice, not to award the creditor the full benefit of a bargain that was never made.

Quasi-contractual liability presupposes a lawful act. If the act is unlawful and punished by penal law, the source may be delict; if the act is negligent and causes damage without criminal treatment, the source may be quasi-delict.

Acts or Omissions Punished by Law

An act or omission punished by law, also called a delict or crime, gives rise to civil liability when the punishable conduct causes legally compensable injury. The Revised Penal Code recognizes the principle that a person criminally liable is generally also civilly liable.

Civil liability arising from crime may include restitution, reparation for damage caused, and indemnification for consequential damages. Restitution restores the thing itself when possible; reparation answers for the value of the damage; indemnification covers other damages that are the natural and probable consequences of the offense.

The civil obligation from delict is governed primarily by penal law and procedural rules on the civil action arising from the offense. The Civil Code fills in matters such as damages, obligations, and persons who may be liable when consistent with the penal law framework.

The offended party may pursue the civil aspect of the criminal act under the governing rules, subject to waiver, reservation, prior filing, or independent civil actions when allowed. The chosen procedural route affects timing and forum but does not change the substantive source of civil liability when the claim is based on the crime itself.

An acquittal does not always eliminate civil consequences. If the judgment declares that the act or omission from which civil liability might arise did not exist, civil liability based on the delict is extinguished; if acquittal rests on reasonable doubt, a civil action based on another source may still proceed when supported by preponderant evidence.

Delictual liability differs from contractual liability because the breach is of a public penal norm that also produces private civil consequences. It differs from quasi-delict because the wrongful act is punished as a crime, and criminal procedure and proof govern the penal aspect.

Quasi-Delicts

A quasi-delict is a fault or negligent act or omission that causes damage to another, when the liability is treated as extra-contractual. It is a separate source of obligation because the duty breached is imposed by law on all persons to observe due care and avoid causing injury to others.

The essential requisites are damage suffered by the plaintiff, fault or negligence of the defendant or of a person for whom the defendant is responsible, and a causal connection between the negligent conduct and the damage. Negligence is the omission of the diligence required by the nature of the obligation and the circumstances of persons, time, and place.

Quasi-delict does not require criminal intent. Liability may arise from imprudence, lack of foresight, lack of skill, violation of safety rules, or failure to act as a reasonably prudent person would under the circumstances.

The Civil Code text describes quasi-delict in relation to situations where there is no pre-existing contractual relation, but jurisprudence recognizes that the same negligent act may sometimes breach both a contractual duty and an independent duty imposed by law. The controlling inquiry is whether the plaintiff is enforcing the promised prestation or seeking redress for violation of a general duty of care.

Quasi-delictual liability may be direct or vicarious. A person is directly liable for his own negligence, while certain persons such as parents, guardians, employers, owners, teachers, or heads of establishments may be liable for negligence of persons under their responsibility when the law so provides.

Vicarious liability in quasi-delict is grounded on presumed negligence in selection, supervision, or control. The responsible person may avoid liability by proving that the diligence of a good father of a family was observed when the law allows that defense.

The usual remedy is damages measured by the injury proximately caused by the negligent act. Proximate cause links the negligent conduct to the injury in a natural and continuous sequence, unbroken by an efficient intervening cause.

Distinguishing the Sources

Overlap of Sources

A single occurrence may generate obligations from different sources, but recovery must avoid double compensation for the same injury. The law permits alternative theories when each has a distinct juridical basis, but the injured party cannot be made more than whole for one compensable loss.

Breach of contract and quasi-delict may overlap when a negligent act violates both a contractual undertaking and a general duty of care. The distinction affects the required allegations, available defenses, prescription, damages, and whether diligence in selection and supervision is a defense.

Delict and quasi-delict may also arise from the same negligent act when the act is punishable by penal law and also constitutes civil negligence. The civil action based on crime depends on criminal liability rules, while the civil action based on quasi-delict is independent when allowed and is proved by the standard applicable to civil cases.

Contract and quasi-contract do not normally coexist over the same subject because quasi-contract supplies an obligation where no agreement governs. When a valid contract covers the benefit received and the duty to pay or return, the contract ordinarily controls.

Law and the other sources often interact because every source is recognized by law, but an obligation is classified as arising from law only when the legal provision itself creates the duty without depending on consent, unjust enrichment, crime, or negligence as the immediate juridical fact.

Practical Consequences of Classification

Identifying the correct source determines the elements that must be alleged and proved. A complaint on contract must show a valid contract and breach, while a complaint on quasi-delict must show damage, negligence, and causation.

The source determines the debtor. In contract, the debtor is the party who assumed the obligation; in quasi-contract, it is the person unjustly benefited or the gestor accountable under law; in delict, it is the offender and other persons civilly liable under penal law; in quasi-delict, it may include the negligent actor and persons vicariously liable.

The source determines the standard of diligence. Contractual obligations use the diligence agreed upon, required by law, or expected from the nature of the obligation; quasi-delict uses the diligence required by the circumstances; law-based duties use the standard fixed by the creating provision.

The source affects damages. Contract damages usually compensate losses that are the natural and probable consequences of breach and those contemplated by the parties, while quasi-delict and delict damages focus on injury proximately caused by wrongful or negligent conduct.

The source affects defenses. A contractual debtor may invoke invalidity, fulfillment, extinguishment, force majeure, or creditor delay; a quasi-contractual debtor may contest unjust enrichment or mistake; a delictual defendant may rely on defenses affecting criminal and civil liability; a quasi-delict defendant may dispute negligence, causation, damage, or vicarious responsibility.

The source affects prescription because different actions may have different prescriptive periods under the Civil Code or special laws. A claimant must classify the action by its real nature, not by the label attached to the pleading.

Relation to Prestation and Demandability

Every civil obligation, whatever its source, must have a determinate or determinable prestation to give, to do, or not to do. Without an identifiable prestation, there is no enforceable obligation even if the parties or circumstances suggest a general expectation of fairness.

The source supplies the juridical tie between creditor and debtor. The creditor is the person entitled to demand performance or recovery, while the debtor is the person bound to perform, restore, indemnify, or answer for damage.

The source also explains when the obligation becomes demandable. A statutory duty becomes demandable under the law creating it, a contractual duty under the terms of the contract and rules on obligations, a quasi-contractual duty upon unjust receipt or management, delictual liability upon commission of the punishable act with civil consequences, and quasi-delictual liability upon negligent injury.

Performance or payment made without a civil source may be voluntary, moral, or mistaken. If mistaken payment results in unjust enrichment, the law may create a quasi-contractual obligation to return what was unduly received.

Concise Comparison of Fault-Based Sources

The five sources are not mere labels but juridical gateways to enforceability. A civil obligation exists when a recognized source creates a debtor-creditor relation with a demandable prestation, and the remedy follows the character of that source.