Contractual Liability vs Quasi-Delict in the Philippines

Short answer: Contractual liability (culpa contractual) arises when someone fails to perform an obligation under an existing contract (Civil Code, Art. 1170). Quasi-delict (culpa aquiliana) arises when someone causes damage to another by fault or negligence where there is no pre-existing contract between them (Art. 2176). The difference matters in practice: in a contract case the claimant proves the contract and the breach and need not prove negligence, while in a quasi-delict case the claimant must prove the defendant’s negligence. An employer sued on a contract cannot escape liability by showing it carefully selected and supervised its employee, but in a quasi-delict case that defense is available (Art. 2180). The two also differ in damages and deadlines: generally ten years for a written contract, six for an oral one, and four for a quasi-delict (Arts. 1144 to 1146).

A bus passenger injured in a crash and a pedestrian hit by the same bus show the difference. The passenger had a contract of carriage with the bus company; the pedestrian did not. Both can recover, but on different legal theories with different rules.

The two kinds of liability side by side

Question	Contractual liability (culpa contractual)	Quasi-delict (culpa aquiliana)
Source	An existing contract and its breach through fraud, negligence, delay or contravention of its terms (Art. 1170)	An act or omission causing damage through fault or negligence, with no pre-existing contractual relation (Art. 2176)
What the claimant proves	The contract, the breach and the damage; negligence need not be proved	The damage, the defendant’s fault or negligence, and the causal link (proximate cause)
Presumptions	Once breach is shown, the defendant must justify it, for example by a fortuitous event (Art. 1174). Common carriers are presumed at fault for passenger injury or death (Art. 1756)	Negligence is presumed only in specific situations, such as a driver violating traffic rules at the time of the mishap (Art. 2185)
Employer’s liability for an employee	The employer answers for the employee’s breach as its own; diligence in selecting and supervising the employee is not a complete defense (for common carriers, Art. 1759)	The employer is liable under Art. 2180 but escapes liability by proving it observed the diligence of a good father of a family in selecting and supervising the employee
Extent of compensatory damages	A debtor in good faith answers for damages that were foreseen or could reasonably have been foreseen; one in bad faith answers for all damages reasonably attributable to the breach (Art. 2201)	All damages that are the natural and probable consequences of the act, whether or not foreseen (Art. 2202)
Moral damages	Only if the breach was in fraud or bad faith, or in specific cases such as a passenger’s death (Arts. 2220 and 1764)	Recoverable for physical injuries caused by the quasi-delict, among other cases (Art. 2219)
Exemplary damages	If the defendant acted in a wanton, fraudulent, reckless, oppressive or malevolent manner (Art. 2232)	If the defendant acted with gross negligence (Art. 2231)
Deadline to sue	10 years on a written contract; 6 years on an oral one (Arts. 1144 and 1145)	4 years (Art. 1146)

Why the burden of proof matters most

In a contract case, the claimant’s job is relatively light: show the contract and show that it was not performed as agreed. The burden then shifts to the defendant to explain the non-performance. In a quasi-delict case, the claimant must affirmatively prove what the defendant did wrong, that it fell below the standard of care, and that it caused the damage. That is why lawyers prefer to sue on a contract whenever one exists. See how to prove negligence and breach of contract: rights, proof and remedies.

The employer’s diligence defense

Under Article 2180, employers are liable for damage caused by employees acting within their assigned tasks, but that liability ceases if the employer proves it exercised the diligence of a good father of a family to prevent the damage, typically by careful hiring and supervision. That defense belongs to quasi-delict. When the employer has a contract with the injured person, such as a carrier with its passenger or a hospital with its patient, the employee’s failure is the employer’s own breach, and good hiring practices only bear on the amount of damages, not on liability itself. See employer’s liability under Article 2180.

Can the same act be both a breach of contract and a quasi-delict?

Yes. The existence of a contract does not bar a quasi-delict claim when the act that breaches the contract would also be a tort without the contract, for example a carrier’s employee who humiliates or assaults a passenger. The claimant may plead both theories in the alternative but cannot recover twice for the same damage. The same act may also be a crime; civil liability from a crime and from a quasi-delict are separate, but double recovery is barred (Art. 2177).

Which theory should a claimant use?

Situation	Usual theory
Passenger injured on a bus, jeepney, ship or plane	Contract of carriage, with the carrier’s presumption of fault
Pedestrian or another motorist hit by a vehicle	Quasi-delict against the driver and the employer or registered owner. See car accident compensation
Customer injured in a store or condominium common area	Often quasi-delict, or contract if the claimant is a paying guest or unit owner. See slips and falls
Contractor builds defectively for the owner	Contract; a neighbor damaged by the same work sues on quasi-delict. See neighbor construction damage
Dog bites a visitor	The possessor’s liability for animals under Art. 2183. See dog bite liability

Defenses that work in both

Fortuitous event: no liability for events that could not be foreseen or, if foreseen, were inevitable, unless the law, the contract or the nature of the obligation says otherwise or the defendant’s own negligence contributed (Art. 1174). See fortuitous events.
Contributory negligence: in a quasi-delict, the claimant’s own negligence reduces the damages, and bars recovery if it was the proximate cause (Arts. 2179 and 2214). A passenger’s contributory negligence likewise reduces, but does not bar, recovery against a negligent carrier (Art. 1762), and in contract cases the court may equitably mitigate damages, for example where the claimant also breached the contract (Art. 2215).
Prescription: the action was filed after the applicable period. See prescription of actions.

Your options and what to do next

Whether you were injured or are being asked to pay, the first job is to decide which theory fits your facts, because it decides what you must prove and how long you have.

Step	What to do	Why
1. Identify the relationship	Was there a contract with the person or company that caused the harm (ticket, booking, receipt, written agreement)?	A contract means you prove breach, not negligence (Art. 1170)
2. Count the deadline	4 years for quasi-delict; 10 years for a written contract; 6 for an oral one	Arts. 1144, 1145 and 1146
3. Preserve evidence	Collect the documents listed below while they still exist	Negligence and damages must be proved
4. Written demand	Demand payment of specific amounts, with copies of receipts	A written extrajudicial demand interrupts prescription (Art. 1155)
5. Barangay conciliation	Required first for most disputes between individuals in the same city or municipality	RA 7160, Sec. 412
6. File the civil case	Plead contract and quasi-delict in the alternative where both may apply	Double recovery is barred (Art. 2177)

Evidence to gather

The contract or proof of it: ticket, booking confirmation, official receipt, work order or messages showing the agreement.
Proof of what happened: police or incident report, photos and video, names and contact details of witnesses.
Proof of fault for a quasi-delict: traffic violation records (which can trigger the presumption in Art. 2185), inspection or repair reports.
Proof of loss: medical records and receipts, repair estimates, proof of lost income.
For a claim against an employer: the employee’s identity and role, and the vehicle’s registration if a vehicle was involved.

Where to file

Where both parties are individuals living in the same city or municipality, the dispute generally must first go to the lupon of the barangay; filing there interrupts prescription for up to 60 days, and you may go straight to court if the deadline is about to run (RA 7160, Secs. 408, 410(c) and 412). Conciliation does not apply against a company such as a bus operator or a hospital. A purely money claim may qualify for the simplified small claims procedure; see how to file a small claims case. Larger claims are filed as an ordinary civil action in the court with jurisdiction over the amount. If you cannot afford a lawyer, the Public Attorney’s Office (PAO) assists litigants who pass its indigency test.

If you are the one being sued: check which theory the claim uses. In a quasi-delict, put the claimant to proof of negligence and causation, and if you are the employer, gather hiring and supervision records for the Art. 2180 defense. In either theory, consider a fortuitous event (Art. 1174), the claimant’s own negligence and prescription.

First action today: write down the date of the incident, count four years from it, and request a copy of the police or incident report and your medical records.

Frequently asked questions

What is the difference between culpa contractual and culpa aquiliana?

Culpa contractual is negligence or fault in performing an existing contract; culpa aquiliana is negligence that causes damage where no contract exists. The first is governed by the rules on obligations and contracts, the second by Articles 2176 to 2194 on quasi-delicts.

Do I need to prove negligence in a breach-of-contract case?

Generally no. Proving the contract and the breach is enough; the defendant must then justify the non-performance.

How long do I have to file a quasi-delict case?

Four years under Article 1146, generally counted from the time the cause of action accrues.

Primary legal sources

Sources rechecked as of: October 4, 2026

This guide provides general Philippine legal information and is not legal advice for a particular case. Which theory applies, and its consequences, depend on the facts and the evidence available.

Breach of Contract vs Quasi-Delict: Contractual Liability and Culpa Aquiliana Compared