How to Enforce a Foreign Judgment in Japan

Enforcing a foreign judgment in Japan requires two distinct court proceedings: first, a Japanese court must formally recognise the foreign judgment under Article 118 of the Code of Civil Procedure, and second, a separate execution judgment must be obtained under Article 24 of the Civil Execution Act before any enforcement measures can be carried out. The process is substantive and procedural in equal measure – Japanese courts do not simply "stamp" an overseas decision, but conduct a genuine review of qualifying conditions, including the critical requirement of reciprocity. For international businesses dealing with unpaid invoices or unsatisfied awards, understanding this two-stage pathway is essential before committing time and resources to Japanese enforcement.

The Legal Framework: Two Statutes, One Pathway

Japan does not have a general bilateral treaty network for the mutual enforcement of civil judgments in the manner of, say, the Brussels Regime in Europe. Instead, enforcement is governed entirely by domestic statute. Article 118 of the Code of Civil Procedure establishes the conditions for recognition of a foreign judgment, while Article 24 of the Civil Execution Act governs the separate action for an execution judgment – the court order that actually allows enforcement measures such as asset attachment or debt collection against a Japanese debtor.

These two stages are sequential. Recognition is not automatic upon presentation of a foreign judgment; it must be positively established through litigation. Only once an execution judgment has been granted can a creditor proceed to enforcement steps such as seizing bank accounts, attaching receivables, or pursuing other asset-freezing measures.

The Four Recognition Conditions Under Article 118

A Japanese court will recognise a foreign judgment only if all four statutory conditions are satisfied simultaneously. Failure on any single ground is fatal to the application.

• Jurisdiction of the foreign court: The originating court must have had proper international jurisdiction over the matter, assessed by reference to Japanese conflict-of-laws principles. A judgment issued by a court without recognised competence will not be accepted.
• Service of process: The losing party must have been properly served in accordance with the law of the originating country, or must have appeared voluntarily in the proceedings. Default judgments obtained without proper service are a frequent basis for refusal.
• Public policy: The content of the judgment and the procedure by which it was obtained must not be contrary to Japan's public order (ordre public) or good morals. This ground is interpreted narrowly by Japanese courts but remains a genuine threshold, particularly for punitive damages awards or judgments based on procedural frameworks that depart radically from Japanese due process standards.
• Reciprocity: This is the condition that most often surprises foreign clients. Japan requires that the country of origin would, under substantially equivalent conditions, recognise a comparable Japanese judgment. Where reciprocity cannot be established – because the foreign jurisdiction applies materially stricter conditions to Japanese judgments than Japan itself applies – recognition will be refused. Reciprocity is assessed on a case-by-case basis by Japanese courts, and its existence is not presumed.

If your judgment originates from a jurisdiction whose relationship with Japan on this point is unclear, an early assessment of reciprocity is the single most important step before filing. Ferraz & Whitmore can assist in evaluating this question across multiple jurisdictions. Contact us at info@ferrazwhitmore.com or visit our contacts page to discuss your specific situation.

Step-by-Step Procedure

Step 1 – Pre-Filing Assessment

Before commencing proceedings, gather intelligence on the debtor's assets in Japan. An execution judgment with no assets to enforce against is a costly academic exercise. At this stage, consider whether interim measures – such as a provisional attachment (kari sashiosae) – are warranted to prevent asset dissipation before or during the recognition proceedings. A provisional attachment can be sought on an expedited basis before the recognition action is concluded, but requires the creditor to demonstrate the probability of the underlying claim and the risk of harm from delay.

Step 2 – Prepare and File the Recognition/Execution Action

The action for an execution judgment is filed as a lawsuit before a Japanese district court – typically the Tokyo District Court for commercially significant matters, or the court with jurisdiction over the debtor's domicile or asset location. This is not an administrative application; it is adversarial civil litigation, and the debtor has the right to contest the claim on any of the Article 118 grounds.

The core documents required at filing typically include:

• A certified copy of the foreign judgment, authenticated in accordance with Japanese requirements (apostille under the Hague Convention of 1961 where applicable, or consular legalisation where not).
• A certified Japanese translation of the judgment and all supporting documents.
• Evidence establishing the finality and enforceability of the judgment in the country of origin – often a certificate of final judgment (kakuteishomeisho equivalent) issued by the originating court.
• Evidence relevant to the four recognition conditions, particularly jurisdiction and service.
• If reciprocity is contested, legal opinions or documentary evidence on the foreign jurisdiction's treatment of Japanese judgments.

The quality and completeness of document preparation at this stage is one of the principal cost and delay drivers. Deficiencies routinely cause adjournments and additional translation costs.

Step 3 – Litigation of the Execution Judgment Action

Once filed, the proceedings follow ordinary Japanese civil procedure. The debtor is served, submits written responses, and hearings are scheduled. Japanese civil litigation at first instance tends to proceed through multiple preparatory hearings before a merits hearing. For straightforward recognition actions where the debtor does not meaningfully contest the Article 118 conditions, the proceedings may be resolved relatively efficiently. Where the debtor raises substantive defences – particularly on public policy or reciprocity – contested proceedings will take considerably longer.

A realistic timeline for an uncontested or lightly contested action in Tokyo is broadly in the range of several months to over a year. Contested proceedings before the Tokyo District Court, particularly where expert evidence on foreign law is required, can extend substantially beyond that. Appeals to the High Court and, ultimately, the Supreme Court are possible, further extending timelines.

Step 4 – Obtain the Execution Judgment

If the court is satisfied that all Article 118 conditions are met and no valid defence has been raised, it will issue the execution judgment under Article 24 of the Civil Execution Act. This judgment does not itself transfer money or attach assets – it is the authorisation to proceed to enforcement.

Step 5 – Enforcement Measures

With an execution judgment in hand, the creditor may pursue standard Japanese enforcement mechanisms, including:

• Attachment of bank accounts – the most common route for debt collection against Japanese corporate debtors, requiring identification of the debtor's bank and branch.
• Attachment of receivables – directing third-party obligors of the debtor to pay the creditor directly, effective for debtors with identifiable commercial receivables.
• Attachment of immovable property – available but slower and subject to priority rules under the Civil Code and registration system.
• Attachment of movable property – conducted by court bailiffs, practically limited by the value and identifiability of the debtor's tangibles.

Identifying the precise assets to attach is itself a practical challenge. Japan introduced limited asset investigation procedures that allow judgment creditors to seek information on a debtor's assets through the court, including enquiries to financial institutions and the real estate registry, though these procedures have specific conditions and limitations.

Late Payment Interest and Monetary Awards

Where the foreign judgment includes an award of late payment interest or post-judgment interest, Japanese courts will generally enforce the monetary sum as awarded, subject to the same recognition conditions. The rate applicable to any domestic enforcement measures – such as interest accruing between the execution judgment and actual payment – is governed by Japanese law. Whether interest under an unpaid invoice or a payment order awarded abroad will be fully reflected in the enforcement depends on how the original judgment was framed and whether the interest component itself offends any of the Article 118 conditions.

Common Errors by Foreign Clients

Ferraz & Whitmore's experience in cross-border debt recovery identifies several recurring errors that foreign creditors make when approaching Japanese enforcement:

• Assuming reciprocity exists without verification. Clients from jurisdictions that enforce foreign judgments liberally sometimes assume Japan will reciprocate automatically. This is not the case, and the analysis is jurisdiction-specific.
• Underestimating document preparation requirements. Apostille or legalisation, certified translations by qualified Japanese translators, and proof of finality are non-negotiable. Incomplete packages cause delay and cost.
• Failing to investigate assets before filing. Obtaining an execution judgment against a debtor who has already dissipated or transferred assets is a hollow victory. Provisional attachment at the outset is worth serious consideration.
• Relying on judgments containing substantial punitive damages without prior advice. Punitive damages awards, particularly from US courts, face meaningful public policy challenges under Article 118. Partial recognition of the compensatory element, while excluding the punitive element, has occurred in Japanese case law.
• Treating the action as administrative rather than litigious. Creditors unfamiliar with Japanese civil procedure sometimes fail to appoint qualified Japanese counsel early enough, leading to procedural errors or missed opportunities to address the debtor's defences strategically.
• Overlooking insolvency risk. Where a debtor is in financial distress, parallel monitoring of their corporate status is essential. Commencement of bankruptcy or civil rehabilitation proceedings in Japan creates an automatic stay on individual enforcement actions. For context on how insolvency intersects with enforcement strategy, our bankruptcy and restructuring practice in Japan provides relevant background.

Arbitral Awards: A Different Route

It is worth noting that foreign arbitral awards are enforced through a distinct and generally more straightforward mechanism. Japan is a party to the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards, which provides a treaty-based route with a more limited set of refusal grounds than those applicable to foreign court judgments. If your dispute involved arbitration – for example, under JCAA rules or another institutional framework – the enforcement analysis differs materially from the judgment route described in this guide. Creditors holding arbitral awards should take specific advice on the New York Convention procedure in Japan rather than applying the Article 118/Article 24 framework by analogy.

Decision Checklist: Before You File

Before committing to recognition and enforcement proceedings in Japan, consider the following questions:

• Has reciprocity been assessed for the jurisdiction in which your judgment was obtained?
• Is the judgment final and enforceable in the country of origin? Is this capable of documentary proof?
• Was the debtor properly served in the original proceedings?
• Does the judgment contain any element – such as punitive damages – that may face a public policy challenge?
• Have you identified specific assets in Japan against which enforcement is realistic?
• Is a provisional attachment necessary to prevent asset dissipation during the recognition proceedings?
• Are all original documents capable of apostille or consular legalisation, and is certified Japanese translation available?
• Is the debtor currently subject to any insolvency or restructuring proceedings in Japan?

If the answer to any of these questions is uncertain, addressing it before filing will reduce cost, delay and the risk of an adverse outcome on procedural grounds.

For a preliminary assessment of your enforcement position in Japan, our team is available to review the specific circumstances of your judgment and the debtor's profile. You are welcome to reach out at info@ferrazwhitmore.com or through our contacts page.

How Ferraz & Whitmore Supports Cross-Border Enforcement in Japan

Our debt recovery practice in Japan assists international creditors at each stage of the enforcement process: from pre-filing asset investigation and reciprocity analysis, through the recognition and execution judgment proceedings, to the selection and pursuit of specific enforcement measures. We coordinate with qualified Japanese counsel and bring cross-border perspective to jurisdictional questions that span multiple legal systems.

Enforcement in Japan requires patience and precision. The procedural framework is well-established, but its demands on document quality, legal analysis and strategic sequencing are significant. Early and thorough preparation is consistently the factor that distinguishes successful enforcement from protracted, inconclusive proceedings.

To discuss your enforcement matter in Japan, please contact us at info@ferrazwhitmore.com or visit our contacts page to arrange a consultation.

Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.