Is truth a defense to defamation? The short answer
In American law, yes: a statement that is substantially true can't support a defamation claim. In Korean law, not by itself. Korea's Criminal Act punishes anyone who publicly states facts that damage another person's reputation, even when those facts are true (art. 307(1)). This offense, called 사실적시 명예훼손 ("defamation by stating facts"), is one of the sharpest contrasts between Korean and U.S. speech law.
- Korean offense
- Publicly stating facts that damage someone's reputation
- Penalty
- Up to 2 years' imprisonment or a fine up to 5 million won
- False statements
- Up to 5 years under art. 307(2)
- Defense
- True and solely for the public interest (art. 310)
Korea also has a separate civil route, a damages claim under the Civil Act, and online defamation is punished more heavily under the Information and Communications Network Act when there's intent to slander. This page focuses on the criminal offense and how it compares with the U.S. approach built on the First Amendment.
Elements of the Korean offense
- Publicity (공연성): the statement must be made publicly. Korean courts apply a "possibility of spreading" theory: even a statement to one person counts if it's likely to spread to many. The Supreme Court reaffirmed this theory in a 2020 en banc decision.
- Stating facts: the statement must assert concrete facts, not mere opinion or abuse. Pure insults fall under the separate offense of insult (모욕죄, art. 311).
- Damage to reputation: the facts must be capable of lowering the person's social standing. Actual harm isn't required.
- Intent: the speaker must know the statement is factual and could harm reputation.
Defamation under art. 307 is a "no punishment against the victim's will" offense (art. 312(2)): prosecutors can proceed without a complaint, but the case ends if the victim says they don't want punishment. How victims trigger and end these cases is covered in the criminal complaint process.
The public-interest defense in article 310
Art. 310 says that an act under art. 307(1) is not punishable if the stated facts are true and the statement was made solely for the public interest. Courts read "solely" flexibly: the main motive must be public interest, even if some private motive was mixed in. If a speaker reasonably believed the facts were true based on adequate grounds, courts may still find the act not unlawful.
Notice what the defense doesn't cover. A true statement about a purely private matter, such as an affair or an old debt, has no public-interest justification and remains punishable. Workplace harassment disclosures, consumer reviews and #MeToo posts often fall in a gray zone, which is exactly why critics say the law deters people from speaking.
The Korean rule asks not only "is it true?" but "why are you saying it?" That second question gives courts room to protect privacy, and gives speakers reason to stay silent.
The 2021 Constitutional Court decision
In February 2021 the Constitutional Court upheld art. 307(1) by a 5–4 vote (2017헌마1113 and consolidated cases). The majority stressed that reputation, once damaged, is hard to restore; that in Korea's dense online environment true private information can spread instantly; and that art. 310 and the civil remedy alone weren't enough to protect people's private lives and dignity. The dissent argued that punishing true statements restricts free speech too much, that civil damages would suffice, and that the offense discourages reporting on matters people have a right to know.
The debate continues outside the court. The UN Human Rights Committee, reviewing Korea in 2015, urged the country to consider decriminalizing defamation, and bills to repeal or narrow art. 307(1) have been introduced repeatedly. A student essay working through decriminalization, the clash between free expression and reputation, and the weaknesses of art. 307(1) is Decriminalizing Truthful Defamation in Korea: Freedom of Expression, the Right to Reputation and Article 307(1) of the Criminal Act.
- Constitutional Court, 2021 (2017헌마1113 등)
- Upheld criminal punishment of true defamatory statements, 5–4
- Supreme Court en banc, 2020
- Kept the "possibility of spreading" test for publicity
- New York Times v. Sullivan (1964)
- Public officials must prove actual malice to win defamation suits
The U.S. approach: truth, falsity and actual malice
American defamation law treats falsity as an essential element. A plaintiff must show a false statement of fact, published to a third party, that harmed their reputation, with the required level of fault. In New York Times Co. v. Sullivan (1964), the Supreme Court held that a public official can win only by proving "actual malice," meaning knowledge of falsity or reckless disregard for the truth. Gertz v. Robert Welch, Inc. (1974) let states set a lower fault standard for private figures, but not liability without fault.
The burden of proving falsity falls on the plaintiff in cases involving matters of public concern (Philadelphia Newspapers, Inc. v. Hepps, 1986). Criminal defamation still exists in some states, but Garrison v. Louisiana (1964) applied the actual malice standard to criminal libel about public officials, and prosecutions are rare. Pure opinion and parody also get protection, as in Hustler Magazine v. Falwell (1988).
Truthful but private information isn't left entirely unprotected in the U.S. The privacy torts, especially public disclosure of private facts, can cover true statements about intimate matters with no legitimate public interest, though courts apply them narrowly. Background on those interests is in the right to privacy.
Korea vs. the U.S. side by side
| Korea | United States | |
|---|---|---|
| Main route | Criminal offense plus civil damages | Civil lawsuit |
| True statements | Punishable unless solely for the public interest | Not defamation |
| Public figures | Public-interest defense applied more readily | Must prove actual malice |
| Burden on falsity | Prosecutor proves facts; defendant invokes art. 310 | Plaintiff proves falsity on public matters |
Both systems balance the same two values, reputation and expression. Korea leans toward dignity and privacy, backed by criminal law; the U.S. leans toward open debate, relying on civil suits and the market of ideas. Because a criminal offense must be clearly defined under the principle of legality, the vagueness of terms like "public interest" is also part of the Korean debate.
Every defamation law decides whose discomfort counts more: the person exposed or the person silenced. Korea and the U.S. answer that question in opposite directions.
- Is truth a defense to defamation in the U.S.?
- Yes. Substantial truth defeats a defamation claim, and plaintiffs suing over matters of public concern must prove the statement was false.
- Can you be punished in Korea for saying something true?
- Yes. Art. 307(1) punishes publicly stating true facts that damage reputation, unless the statement was true and made solely for the public interest.
- What is the penalty for 사실적시 명예훼손?
- Up to 2 years' imprisonment or a fine of up to 5 million won. Online statements with intent to slander are punished more heavily under a separate law.
- Did the Constitutional Court strike down the law?
- No. In 2021 it upheld art. 307(1) by a 5–4 vote.