Corporate LawPublished: 2026-03-30/Updated: 2026-10-2213 min readLawyer-Reviewed

Enforcing Foreign Judgments in Japan: The Enforcement Judgment, the Four Conditions of Article 118, Punitive Damages and Service

Key Takeaways

  • ✓To execute a foreign judgment against assets in Japan, you must obtain an enforcement judgment from a Japanese district court (Civil Execution Act Art. 24)
  • ✓The judgment must be final and meet the four conditions of Code of Civil Procedure Art. 118: jurisdiction, service, public policy and reciprocity. The merits are not re-examined
  • ✓The punitive portion of a US damages award cannot be enforced (Supreme Court, July 11, 1997)
  • ✓Japan gave notice in December 2018 of its opposition to service by postal channels; judgments in cases begun by service the treaty does not allow may fail the service condition
  • ✓Foreign arbitral awards do not require reciprocity. To collect from assets in Japan, creditors can use the asset disclosure procedure and the procedure for obtaining information from third parties

Not sure how this applies to your situation? Ask a lawyer — the first 30 minutes are free.

Share this article

A foreign judgment, even a final one, cannot be enforced against assets in Japan on its own. The creditor must file a suit in a Japanese district court for an "enforcement judgment" and show that the foreign judgment is final and meets the four conditions of Article 118 of the Code of Civil Procedure: jurisdiction of the foreign court, proper service on the defendant, consistency with Japanese public policy, and reciprocity (Civil Execution Act Art. 24).

The Japanese court does not re-examine whether the foreign judgment was correct on the merits. However, the punitive portion of a US damages award, and judgments in cases where the defendant was not served in a way the Hague Service Convention allows, will not be enforced in Japan.

When This Comes Up

  • You won a judgment in a US state court against a Japanese business partner, but the partner has no assets in the United States.
  • Your company in Japan received an English-language complaint from a US court directly by ordinary mail or courier.
  • You learn after the fact that a default judgment was entered against you in the US, and the creditor says it will seize your assets in Japan.
  • As a foreign company, you want to collect on your home-court judgment against a Japanese company and do not know where to start.

How Japan Treats Foreign Judgments

A final judgment of a foreign court has effect in Japan only if it meets all four conditions of Article 118 of the Code of Civil Procedure. If it does, no separate recognition proceeding is needed. To execute against assets in Japan, however, the creditor needs a separate "enforcement judgment" from a Japanese court.

An enforcement judgment is a Japanese judgment declaring that compulsory execution based on the foreign judgment is permitted. A foreign judgment with a final enforcement judgment becomes a "title of obligation" (saimu meigi), the document on which execution is based (Civil Execution Act Art. 22(vi)).

The foreign judgment must also be final. If finality is not proven, the suit for an enforcement judgment is dismissed (Civil Execution Act Art. 24).

A judgment still open to appeal, or one that is only provisionally enforceable, is not enough. Obtaining proof of finality from the court that issued the judgment is the first practical step.

Free Tool Related to This Article

Contract Risk Checker

Try our free simulator related to this topic.

Try for free →

The Four Conditions and How Japanese Courts Apply Them

ConditionWhat it requires
1. Indirect jurisdictionThe jurisdiction of the foreign court must be recognized under Japanese laws or treaties (Code of Civil Procedure Art. 118(i))
2. ServiceThe losing defendant must have received service of the summons or order needed to commence the action, or must have appeared without having been served (Art. 118(ii))
3. Public policyThe content of the judgment and the court proceedings must not be contrary to public order or good morals in Japan (Art. 118(iii))
4. ReciprocityThe judgment country must recognize Japanese judgments under similar conditions (Art. 118(iv))

1. Jurisdiction of the foreign court ("indirect jurisdiction")

The jurisdiction of the foreign court must be recognized under Japanese laws or treaties (Code of Civil Procedure Art. 118(i)). This is called "indirect jurisdiction."

The Supreme Court has held that this is decided basically in line with the international jurisdiction rules of Japan's Code of Civil Procedure, while asking, in light of the specific facts, whether it is appropriate for Japan to recognize the judgment as a matter of reason (Supreme Court, April 24, 2014, Minshu Vol. 68, No. 4, p. 329). In other words, the question is not whether the foreign court had jurisdiction under its own law, but whether jurisdiction exists by Japanese standards.

In practice, the disputes focus on forum selection clauses, where the defendant has offices, and where the tort took place. If there is a forum selection clause, check whether the judgment came from the court the parties agreed on.

2. Proper notice of the action to the defendant (service)

The losing defendant must have received service of the summons or order needed to commence the action, or must have appeared in the action without having been served (Code of Civil Procedure Art. 118(ii)). Service by public notice and similar methods does not count (same item).

The Supreme Court has held that where a judicial assistance treaty between the judgment country and Japan requires a particular method of service, service that does not follow the treaty fails this condition (Supreme Court, April 28, 1998, Minshu Vol. 52, No. 3, p. 853). In that case, hand delivery in Japan by a person privately engaged by the plaintiff did not satisfy the requirement.

The key treaty is the Hague Service Convention (Convention on the Service Abroad of Judicial and Extrajudicial Documents in Civil or Commercial Matters). Japan and the United States are both parties, and Japan's Central Authority is the Ministry of Foreign Affairs. In December 2018, Japan gave notice of its opposition to service through foreign diplomatic or consular agents (Article 8) and to sending documents directly by postal channels (Article 10(a)).

Caution

A complaint simply mailed to a defendant in Japan is not service the Convention allows. However, if the defendant appears and defends without objecting to defective service, the condition is met. How a Japanese company responds to a foreign complaint therefore affects the later enforcement stage.

3. Consistency with Japanese public policy

The content of the judgment and the court proceedings must not be contrary to public order or good morals in Japan (Code of Civil Procedure Art. 118(iii)). The Supreme Court has held that not only the content but also the way the judgment came about must be consistent with Japanese public policy (Supreme Court, June 7, 1983, Minshu Vol. 37, No. 5, p. 611).

The leading example on content is US punitive damages.

Important

The Supreme Court held that no enforcement judgment can be given for the part of a California judgment that, on top of compensatory damages, ordered punitive damages to make an example of and sanction the defendant (Supreme Court, July 11, 1997, Minshu Vol. 51, No. 6, p. 2573). The compensatory part is assessed separately.

On the other hand, an order that one party bear all litigation costs, including attorneys' fees, is not contrary to public policy as long as it is limited to costs actually incurred (Supreme Court, April 28, 1998, cited above). A remedy is not refused simply because Japan has no equivalent.

On procedure, the Supreme Court held that it violates public policy where it was possible to inform a party of the judgment, but the party in fact had no real opportunity to learn of it, and the judgment became final without any chance to appeal (Supreme Court, January 18, 2019, Minshu Vol. 73, No. 1, p. 1). For a Japanese company facing a US default judgment, how the judgment was communicated can be a real issue.

4. Reciprocity

The judgment country must recognize Japanese judgments under similar conditions (Code of Civil Procedure Art. 118(iv)). The Supreme Court has held that it is enough if, in the judgment country, a Japanese judgment of the same kind would be given effect under conditions that do not differ in any important respect from those of Article 118 (Supreme Court, June 7, 1983, cited above). In that case, reciprocity was found for money judgments from the District of Columbia.

In the United States, recognition of foreign judgments is governed by state law, so reciprocity must be checked state by state. The Supreme Court has also found reciprocity for money judgments with Hong Kong before its return to China (Supreme Court, April 28, 1998, cited above). Rather than relying on general country lists, check the law of the judgment jurisdiction and the Japanese case law for each case.

The Enforcement Judgment Procedure (Civil Execution Act Art. 24)

A suit for an enforcement judgment is generally filed with the district court for the debtor's general forum, such as the location of its head office (Civil Execution Act Art. 24). If there is no general forum, it is filed where the subject of the claim or attachable assets of the debtor are located (same article).

The court must grant the enforcement judgment without examining whether the foreign judgment was correct (Civil Execution Act Art. 24). What the Japanese court examines is finality and the Article 118 conditions. The defendant cannot relitigate the facts or the amount of damages; it can only argue that a condition is not met.

The suit is heard as ordinary litigation, so it takes time if the defendant contests it. Proceedings in Japanese courts are conducted in Japanese, so translations of the judgment, the proof of finality and the service records are needed.

Interest not stated in the foreign judgment can be added if, under the law of the judgment country, it accrues with the award and is enforceable (Supreme Court, July 11, 1997, Minshu Vol. 51, No. 6, p. 2530).

Finding Assets in Japan

An enforcement judgment is of little use if the debtor's assets cannot be found. Japan has two court procedures for locating them.

The first is the asset disclosure procedure, in which the debtor is summoned to court and must state its assets. Amendments to the Civil Execution Act in 2019, effective April 1, 2020, made it easier to use, and a debtor who fails to appear or makes false statements may face criminal penalties.

The second, introduced by the same amendments, is the procedure for obtaining information from third parties. Creditors can obtain information on bank deposits and listed shares from financial institutions, and on land and buildings from the registry office.

Information on the debtor's employer is available only for claims such as child support or damages for death or bodily injury, not for ordinary commercial claims. For some types of information, the asset disclosure procedure must be completed first.

If there is a risk that the debtor will dispose of assets before the enforcement judgment, consider a provisional attachment (a civil preservation measure). It temporarily attaches the debtor's assets where future execution may otherwise become impossible or extremely difficult.

Comparison with Arbitral Awards

Unlike foreign judgments, foreign arbitral awards do not require reciprocity. Japan's Arbitration Act gives an arbitral award the same effect as a final judgment, regardless of whether the seat is in Japan or abroad (Arbitration Act Art. 45(1)). To execute it, the creditor obtains an "enforcement decision" from the court (Arbitration Act Art. 46).

Japan acceded to the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards in 1961. It now has 172 contracting states, and Japan has declared that it applies the Convention to awards made in other contracting states. Japan is not a party to the 2019 Hague Judgments Convention.

Key point

For transactions where the counterparty's assets are in Japan, it is worth comparing at the drafting stage whether a judgment or an award would be easier to enforce. If you already have a judgment, the four conditions above must be checked one by one.

Enforcing a Japanese Judgment Abroad

In the reverse case, enforcement of a Japanese judgment abroad is governed by the law of the country or state where enforcement is sought. New York, for example, governs recognition of foreign money judgments in Article 53 of its Civil Practice Law and Rules (CPLR). Its grounds for non-recognition include lack of due process and lack of jurisdiction, and reciprocity is not among them.

Even so, the method of service and the defendant's opportunity to defend are scrutinized almost everywhere. When starting litigation in Japan, it pays to choose the service method with eventual enforcement abroad in mind.

What You Can Do Now

  1. 1

    Gather proof of finality

    Obtain an authenticated copy of the foreign judgment and proof that it is final from the issuing court (Civil Execution Act Art. 24).

  2. 2

    Check the service records

    Check how the complaint was served on the defendant and keep the records, for example whether it went through the Hague Service Convention's Central Authority (Code of Civil Procedure Art. 118(ii)).

  3. 3

    Break down the award

    Separate any punitive or other non-compensatory components (Code of Civil Procedure Art. 118(iii)).

  4. 4

    Check reciprocity

    Check the case law on reciprocity between the judgment jurisdiction (the state, in the US) and Japan (Code of Civil Procedure Art. 118(iv)).

  5. 5

    Gather leads on assets

    Gather leads on the debtor's assets in Japan, such as its head office, banks, real estate and customers.

If your Japanese company receives a complaint from abroad, keep the date, method of delivery and envelope, and check the response deadline.

When to Consult a Lawyer

  • A judgment in your favor has become final abroad, and you know the debtor has assets in Japan.
  • There are signs that the debtor may move or sell its assets in Japan.
  • Your company in Japan has received a complaint or judgment from a foreign court (whether to defend affects later enforcement directly).
  • You have been sued in Japan for an enforcement judgment based on a foreign judgment.

Yusuke Abe of our firm is admitted in Japan and in New York and advises on matters that involve procedures in both countries. Please contact us through our inquiry page.

Attorney Yusuke Abe

FREE CONSULTATION

Corporate Law: your first 30 minutes are free

  • ・Handled by Yusuke Abe, admitted in Japan and New York
  • ・Online (Zoom etc.) or at our office in Otemachi, Tokyo
  • ・In English or Japanese

Frequently Asked Questions

Can a US judgment be enforced directly in Japan?

No. You must file a suit for an enforcement judgment in a Japanese district court and show that the judgment is final and meets the four conditions of Article 118 of the Code of Civil Procedure (Civil Execution Act Art. 24). Once the enforcement judgment is final, you can execute against assets in Japan (Civil Execution Act Art. 22(vi)).

Can a judgment that includes punitive damages be enforced in Japan?

Not the punitive part. The Supreme Court has held that no enforcement judgment can be given for the portion ordered to make an example of and sanction the defendant (Supreme Court, July 11, 1997). The compensatory portion is assessed separately.

Our company in Japan received a foreign complaint directly by mail. What should we do?

Japan is a party to the Hague Service Convention and, in December 2018, gave notice of its opposition to service by postal channels (Article 10(a)). A complaint simply mailed to you is not service the Convention allows. That does not mean it is safe to ignore; whether to defend affects later enforcement, so decide on a strategy early.

Will a Japanese court re-examine the merits of the foreign judgment?

No. An enforcement judgment must be given without examining whether the foreign judgment was correct (Civil Execution Act Art. 24). The court looks only at finality and the four conditions: jurisdiction, service, public policy and reciprocity.

How does enforcing a foreign judgment differ from enforcing an arbitral award in Japan?

A foreign judgment requires reciprocity, but an arbitral award does not. An award has the same effect as a final judgment even if the seat is abroad, and it is executed after the court issues an enforcement decision (Arbitration Act Arts. 45(1) and 46). Japan is a party to the New York Convention.

Free Tools for This Area

Share this article
This article provides general legal information and does not constitute legal advice. For specific legal issues, please consult with a qualified attorney.

Related Articles

Governing Law and Dispute Resolution in Cross-Border Contracts with Japan: Japanese vs New York Law, Arbitration and the CISG

Without a choice of law, a Japanese court applies the law most closely connected to the contract (Conflict of Laws Act, Art. 8). A Japan- and New York-qualified lawyer explains choosing Japanese or New York law, jurisdiction clauses, enforcing foreign judgments, arbitration under the New York Convention and Japan's 2024 Arbitration Act amendments, and excluding the CISG.

Directors of a Japanese Subsidiary: Foreign and Non-Resident Directors, the Representative Director, and Whether to Have a Board

How to structure the officers of a Japanese subsidiary (kabushiki kaisha) of a foreign company: the number of directors, whether to have a board of directors, foreign and non-resident representative directors, registration and address rules, running board meetings, approving transactions with the parent, and directors' liability, based on the Companies Act and Ministry of Justice practice.

Representations and Warranties in Japanese M&A: How They Work in a Share Purchase Agreement Governed by Japanese Law

A guide for executives and in-house counsel buying or selling a Japanese company on how representations, warranties and indemnities in a share purchase agreement work under Japanese law. The Civil Code has no provision on representations and warranties as such, so their effect depends on drafting. We cover freedom of contract (Civil Code, Article 521), damages for non-performance (Articles 415 and 416), the seller's liability for non-conformity (Articles 562 to 564, 566 and 572), mistake and fraud (Articles 95 and 96), limitation (Article 166), governing law (Act on General Rules, Article 7), and how to set caps, thresholds, claim periods and disclosure schedules.

Can You Commercially Use Generative AI Output in Japan? Copyright Article 30-4 and Output-Stage Risk

A guide for businesses on whether generative AI output can be used commercially in Japan: Article 30-4 of the Copyright Act and its proviso, the similarity and reliance test at the output stage, how training data affects reliance, when AI-generated material is protected by copyright, injunctions, damages and criminal penalties, and steps you can take now.

Entering Japan as a Foreign Company: Representative Office, Branch or Subsidiary, and the Governing Law of Your Contracts

How a foreign company can enter Japan through a representative office, a branch or a subsidiary, explained against the Companies Act: the ban on continuous transactions before registration, the representative in Japan, KK versus GK, governing law and jurisdiction clauses, Foreign Exchange Act filings, and the October 2025 changes to the Business Manager status of residence.

Acquiring or Investing in a Japanese Company: Prior Notification and Post-Investment Reports under Japan's Foreign Exchange Act

How Japan's Foreign Exchange and Foreign Trade Act applies when a foreign company buys shares in, or invests in, a Japanese company: who counts as a foreign investor, the one-share rule for unlisted companies and the 1% threshold for listed ones, designated sectors and prior notification, the 30-day waiting period and its extension, the prior-notification exemption and core sectors, 45-day post-investment reports, and the reform taking effect on 4 January 2027.

Related Q&A

Related reading

Corporate Law

Can You Commercially Use Generative AI Output in Japan? Copyright Article 30-4 and Output-Stage Risk

A guide for businesses on whether generative AI output can be used commercially in Japan: Article 30-4 of the Copyright Act and its proviso, the similarity and reliance test at the output stage, how training data affects reliance, when AI-generated material is protected by copyright, injunctions, damages and criminal penalties, and steps you can take now.

Corporate Law

Entering Japan as a Foreign Company: Representative Office, Branch or Subsidiary, and the Governing Law of Your Contracts

How a foreign company can enter Japan through a representative office, a branch or a subsidiary, explained against the Companies Act: the ban on continuous transactions before registration, the representative in Japan, KK versus GK, governing law and jurisdiction clauses, Foreign Exchange Act filings, and the October 2025 changes to the Business Manager status of residence.

Corporate Law

Acquiring or Investing in a Japanese Company: Prior Notification and Post-Investment Reports under Japan's Foreign Exchange Act

How Japan's Foreign Exchange and Foreign Trade Act applies when a foreign company buys shares in, or invests in, a Japanese company: who counts as a foreign investor, the one-share rule for unlisted companies and the 1% threshold for listed ones, designated sectors and prior notification, the 30-day waiting period and its extension, the prior-notification exemption and core sectors, 45-day post-investment reports, and the reform taking effect on 4 January 2027.

Corporate Law

Setting Up and Running a Company in Japan as a Foreign National: The New Business Manager Visa Criteria (from 16 October 2025) and Company Formation

A guide for foreign founders who want to incorporate a company in Japan and run it under the Business Manager status of residence, based on the new criteria in force from 16 October 2025 (JPY 30 million in capital, at least one full-time employee, B2-level Japanese, three years of experience or a master's degree, review by a business expert) and the incorporation procedure under the Companies Act. Also covers the transitional rule for current holders and what is checked on renewal.

Corporate Law

Buying a Japanese Company: Share Transfer vs Business Transfer, and What Due Diligence Covers

For companies, including overseas buyers, acquiring a small or mid-sized Japanese company: how a share transfer differs from a business transfer under the Companies Act, the Civil Code and the Antimonopoly Act, and MHLW guidelines. Approval of transfers of restricted shares (Companies Act, Articles 136-139 and 145), delivery of share certificates (Article 128), the special shareholder resolution for a business transfer (Articles 467 and 309(2)(xi)) and dissenting shareholders' appraisal rights (Article 469), the seller's non-compete (Article 21), liability where the trade name is continued (Article 22), individual employee consent (Civil Code, Article 625(1)), JFTC prior notification and the usual scope of legal due diligence.

Corporate Law

Japan APPI Data Breach Reporting for Foreign Companies: Extraterritorial Reach, Deadlines and Notifying Individuals

Foreign companies that supply goods or services to people in Japan can be bound by Japan's data breach reporting duty even without a Japanese office. This guide covers extraterritorial reach, the four reportable situations, the preliminary report (roughly 3–5 days) and final report (30 days, or 60 days for wrongful-purpose incidents), notifying individuals, penalties and the amending act promulgated in July 2026.

Attorney Yusuke Abe

FREE 30-MIN CONSULTATION

Talk to a lawyer about the issues in this article

Yusuke Abe, admitted in Japan and New York, will handle your matter — in Japanese or English, online or in person.

Book a free consultation