Concept and Governing Idea
Previous conduct is conduct occurring at a time other than the transaction, act, omission, or event directly in issue. Its admissibility depends on the purpose for which it is offered. Philippine evidence law rejects the easy inference that a person who acted in a particular way before must have acted the same way on the occasion being litigated, but it allows prior conduct when it tends to prove a specific fact other than mere propensity.
Rule 130 treats two matters under previous conduct as evidence: the rule on similar acts and the rule on unaccepted offers. The first is primarily a rule of exclusion with recognized non-propensity uses. The second gives a definite evidentiary consequence to a rejected written offer to pay or deliver what is due.
The doctrine is a rule on relevance and admissibility, not a substitute for proof. The previous act must still be established by competent evidence, must be connected to a material issue, and must survive the court's power to exclude evidence whose probative value is substantially outweighed by unfair prejudice, confusion, delay, or needless presentation of collateral matters.
Similar Acts as Evidence
The general rule is that evidence that a person did or did not do a certain thing at one time is not admissible to prove that the person did or did not do the same or a similar thing at another time. This bars the propensity inference: past conduct alone does not prove present conduct.
The rule applies in both civil and criminal cases. It covers prior acts, omissions, transactions, conduct, and patterns offered merely to show that a person is the kind of person who would act in the same way again. It protects the trial from becoming a series of mini-trials on collateral events and protects the opposing party from unfair prejudice.
The exclusion is strongest in criminal cases because previous misconduct may distract from the charged act and erode the presumption of innocence. An accused may not be convicted because he has a bad record, has acted suspiciously before, or has committed similar wrongs on other occasions. The prosecution must prove the offense charged, not a criminal disposition.
Permitted Non-Propensity Uses
Similar acts may be received when they are relevant to a material issue apart from character or disposition. The permitted use must be concrete and issue-linked; a court should not admit prior conduct on a vague claim that it gives context if the real effect is to prove propensity.
| Permitted purpose | Doctrinal use |
|---|---|
| Specific intent | Prior conduct may show that an act was done with a required mental state when intent is genuinely disputed and cannot be inferred safely from the act alone. |
| Knowledge | Prior dealings or occurrences may show awareness of a fact, condition, risk, defect, or circumstance that a party denies knowing. |
| Identity | Similar conduct may identify the actor when the acts share a distinctive method, pattern, or combination of circumstances that logically points to the same source. |
| Plan, system, or scheme | Separate acts may be admissible when they form parts of an integrated design or recurring method that explains the disputed act. |
| Habit, custom, or usage | Regular conduct in repeated specific situations may prove a routine response, business practice, or community usage relevant to the disputed event. |
| Absence of mistake or accident | Prior similar occurrences may negate a claim that the disputed act was innocent, accidental, inadvertent, or done without awareness. |
These uses do not create an automatic exception. The court must examine the precise issue in dispute, the degree of similarity between the prior act and the act in issue, the time interval between them, the need for the evidence, and the risk that the trier of fact will use the evidence for the forbidden propensity purpose.
Similarity is measured by logical connection, not by labels. A previous act need not be identical, but it must share enough distinctive features with the litigated act to make the permitted inference reasonable. The more remote, generic, or explainable by coincidence the prior conduct is, the weaker its probative value becomes.
Temporal proximity matters because conduct loses force as circumstances change. A remote act may still be admissible if it forms part of a continuing plan, enduring practice, or distinctive method, while a recent act may still be excluded if it proves only character.
Habit, Custom, and Usage
Habit is a regular response to a repeated specific situation. It differs from character because character is a general trait, while habit describes conduct that has become semi-automatic or routine under particular circumstances.
Custom or usage refers to a regular practice in a trade, office, locality, family setting, or course of dealing. It may explain how parties normally perform, communicate, document transactions, deliver goods, receive payments, or handle recurring obligations.
Proof of habit, custom, or usage is stronger when the instances are numerous, uniform, and substantially similar. Sporadic examples, isolated transactions, or broad impressions of behavior do not establish a reliable routine.
Limits on Similar Acts
Similar acts evidence must be anchored to a material fact. If intent, knowledge, identity, plan, system, habit, custom, or absence of mistake is not genuinely in issue, the evidence should be excluded even if the prior act is interesting or suspicious.
The proponent must articulate the chain of relevance. The court must be able to see how the previous conduct tends to prove the permitted fact without relying on the inference that the person has a disposition to act badly, carelessly, fraudulently, violently, negligently, or dishonestly.
The evidence must also be competent in form. If the previous conduct is proved through testimony, the witness must have personal knowledge. If it is proved through a document, the document must be authenticated and offered in accordance with the rules on documentary evidence. If the conduct includes out-of-court statements offered for their truth, the hearsay rule must still be satisfied.
Courts may limit the use of admitted similar acts evidence. The evidence may be received only for the stated purpose, such as knowledge or identity, and not as proof that the party acted in conformity with character. This limiting function preserves the difference between relevance and prejudice.
Unaccepted Offer
The rule on unaccepted offers gives evidentiary effect to a written offer that is definite enough to stand in the place of actual production. A rejected written offer to pay a particular sum of money, deliver a written instrument, or deliver specific personal property may be treated as equivalent to actual tender when the rejection is without valid cause.
The rule is practical. When a party clearly offers in writing to perform by paying a specific amount or delivering a specified thing, the opposing party cannot unjustifiably refuse the offer and later insist that no tender or production was made. The law treats the refusal, when unjustified, as preventing the physical act of tender.
The offer must be in writing because the evidentiary consequence is precise and potentially decisive. Oral offers may have relevance under other rules, but they do not receive this special equivalence under the rule on unaccepted offers.
The offer must also be definite. It must identify the amount of money, the written instrument, or the specific personal property to be delivered. A vague proposal, general willingness to settle, invitation to negotiate, or conditional statement that does not match the obligation is not the kind of offer contemplated by the rule.
Rejection must be without valid cause. A refusal is justified when the offer is incomplete, conditional in a way not allowed by the obligation, made at the wrong time or place, made by a person without authority, directed to the wrong party, covers less than what is due, tenders the wrong object, or otherwise fails to comply with the legal or contractual terms of performance.
The effect is evidentiary equivalence to tender, not automatic extinction of the obligation in every case. If substantive law requires consignation after an unjustified refusal of payment, the written offer may prove tender, but the debtor must still comply with the requisites for consignation to obtain the effects that substantive law attaches to it.
The rule is also different from a compromise offer. A compromise proposal seeks settlement of a disputed claim and is generally not treated as an admission of liability. An unaccepted offer under this topic concerns a definite written offer to pay or deliver, and its significance is that unjustified rejection is treated as equivalent to actual production and tender.
Operational Requisites
- There must be an offer in writing.
- The offer must be to pay a particular sum of money, deliver a written instrument, or deliver specific personal property.
- The offer must be communicated to the person entitled to accept or reject performance.
- The offer must be definite, unconditional as to the performance due, and capable of immediate acceptance.
- The offer must be rejected.
- The rejection must be without valid cause.
When these requisites concur, the offeror may rely on the written offer as the evidentiary equivalent of production and tender. The rule prevents a party from manufacturing default by refusing a proper offer and then using the absence of physical delivery against the offeror.
Relationship Between the Two Rules
Similar acts and unaccepted offers both involve conduct outside the immediate litigated event, but they operate differently. Similar acts address whether past behavior may be used inferentially to prove a fact in dispute. Unaccepted offers address the legal effect of a specific written offer and an unjustified refusal.
| Point of comparison | Similar acts | Unaccepted offer |
|---|---|---|
| Primary function | Controls use of prior conduct to prove another act or state of mind. | Treats a rejected written offer as equivalent to tender when refusal lacks valid cause. |
| General approach | Exclusionary, unless a non-propensity purpose is shown. | Admissive and effect-giving when statutory requisites are met. |
| Main danger | Unfair propensity reasoning and trial of collateral acts. | Confusing settlement talk or defective proposals with valid tender. |
| Required precision | Similarity, relevance, and materiality to the permitted purpose. | Written, definite, particular, and properly directed offer. |
In both rules, the court looks beyond the fact that conduct occurred and asks what legal inference the proponent wants the court to draw. If the inference is forbidden, speculative, or unfairly prejudicial, exclusion follows. If the inference is specifically authorized and supported by competent proof, the previous conduct may carry substantial evidentiary weight.