Arbitration Law in Japan

The Arbitration Act 2003

Japanese arbitration law is governed by the Arbitration Act (Chūsai Hō, Law No. 138 of 2003), which entered into force on 1 March 2004. The Act was enacted to replace the outdated arbitration provisions of the Code of Civil Procedure (1890) and to align Japanese arbitration law with international standards. It is substantially based on the UNCITRAL Model Law on International Commercial Arbitration (1985, as amended in 2006), although Japan did not adopt the Model Law verbatim but used it as a template with certain modifications.

The Arbitration Act applies to both domestic and international arbitrations seated in Japan. It is divided into ten chapters covering: the arbitration agreement (Chapter II), the composition of the arbitral tribunal (Chapter III), the jurisdiction of the arbitral tribunal (Chapter IV), the conduct of arbitral proceedings (Chapter V), the making of the award and termination of proceedings (Chapter VI), recourse against the award (Chapter VII), recognition and enforcement of foreign arbitral awards (Chapter VIII), miscellaneous provisions (Chapter IX), and penal provisions (Chapter X).

A notable feature of the Arbitration Act is its pro-arbitration orientation. Article 3 provides that courts must not intervene in matters governed by the Act except as expressly provided, reflecting the principle of kompetenz-kompetenz. Article 15 gives the arbitral tribunal the authority to rule on its own jurisdiction. Article 26 permits the arbitral tribunal to order interim measures unless the parties agree otherwise.

The Arbitration Agreement

Under Article 13 of the Arbitration Act, an arbitration agreement must be in writing, whether in a contract, exchange of correspondence, or electronic record. The Act does not require the agreement to be signed. Japan has not adopted the requirement that an arbitration agreement be contained in a separate document or clause, and the courts have generally interpreted the writing requirement liberally. The leading case on the validity of arbitration agreements is Japan Shipping Exchange v. Mitsui & Co. (Tokyo High Court, 2009), which upheld an arbitration agreement incorporated by reference to standard terms.

The Act provides that an arbitration agreement is enforceable by staying any court proceedings brought in breach of the agreement (Article 14). The court must refer the parties to arbitration unless the agreement is null and void, inoperative, or incapable of being performed. Japanese courts have demonstrated a strong pro-arbitration stance, granting stays in nearly all cases.

The Japan Commercial Arbitration Association

The Japan Commercial Arbitration Association (JCAA) is the principal arbitral institution in Japan. Established in 1953, the JCAA administers both domestic and international commercial arbitrations. It maintains its own Commercial Arbitration Rules (most recently revised in 2021), which provide for streamlined procedures, emergency arbitrator provisions, and expedited proceedings for smaller claims.

The JCAA has positioned itself as a neutral venue for dispute resolution in Asia, emphasizing its familiarity with both civil law and common law traditions. The JCAA’s rules permit party autonomy in selecting arbitrators, the applicable law, and the language of the proceedings. The JCAA maintains a panel of arbitrators from Japan and overseas, and the 2021 revisions introduced a system of multi-party arbitration and consolidation of proceedings.

In addition to the JCAA, the Tokyo International Arbitration and Mediation Center (formerly the Tokyo Maritime Arbitration Commission) handles specialized maritime and commodities disputes, while the International Centre for Settlement of Investment Disputes (ICSID) operates in Tokyo through its Japan office.

Recognition and Enforcement of Awards

The New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards (1958) entered into force in Japan on 4 September 1961. Japan made reservations limiting application to awards made in the territory of another contracting state (reciprocity reservation) and to commercial disputes. The New York Convention is implemented through Article 45 of the Arbitration Act.

Article 45 provides that a foreign arbitral award shall be recognized and enforced in Japan unless one of the grounds for refusal in Article V of the New York Convention is established. These grounds include: (i) incapacity of a party or invalidity of the arbitration agreement; (ii) lack of proper notice or inability to present a case; (iii) the award deals with a dispute not contemplated by or falling within the terms of the submission to arbitration; (iv) the composition of the arbitral tribunal or the procedure was not in accordance with the parties’ agreement or the law of the seat; (v) the award is not binding on the parties or has been set aside; (vi) the subject matter is not capable of settlement by arbitration under Japanese law; or (vii) recognition or enforcement would be contrary to Japanese public policy.

Japanese courts have consistently applied a narrow construction of the public policy exception, following the approach of the Tokyo District Court in K.K. A v. X (Tokyo District Court, 2000), which held that public policy under Article V(2)(b) should be limited to “fundamental principles and values of Japanese law.” This pro-enforcement stance makes Japan a reliable venue for the enforcement of arbitral awards. The enforcement procedure is by way of an action for a judgment of enforcement (kyōsei shikkō hanketsu), followed by execution under the Civil Execution Act.

Setting Aside Awards

An arbitral award rendered in Japan may be set aside only on the grounds set out in Article 44 of the Arbitration Act, which mirrors Article 34 of the UNCITRAL Model Law. The grounds are the same as those for refusal of recognition and enforcement of foreign awards. The application to set aside must be made within three months of receipt of the award. Japanese courts have rarely set aside awards, and the Tokyo District Court and Tokyo High Court have established expertise in arbitration-related matters, hearing most applications.

Court Assistance

Japanese courts play a supportive role in arbitration. Under Article 17 of the Arbitration Act, a party may apply to the court for the appointment of arbitrators if the parties have not agreed on a procedure and cannot reach agreement. The court may also order interim measures in support of arbitration (Article 36) and assist in the taking of evidence (Article 35). The Tokyo District Court has designated specialized judges for arbitration-related matters, and the court’s decisions reflect a general policy of non-intervention consistent with the Arbitration Act’s pro-arbitration philosophy.

Investor-State Arbitration

Japan is a party to numerous international investment agreements that provide for investor-state dispute settlement (ISDS), including the CPTPP (Chapter 9), the Japan-EU Economic Partnership Agreement (Chapter 8), and over 30 bilateral investment treaties (BITs). Japan’s BITs typically offer arbitration under the ICSID Convention, the UNCITRAL Arbitration Rules, or the Rules of the International Chamber of Commerce (ICC).

Japan has been involved in a small number of ISDS cases as a respondent. The most significant is Philip Morris Asia v. Australia (UNCITRAL, PCA Case No. 2012-12), in which Japan participated as a third-party observer. Japanese investors have brought claims under BITs, including claims against Spain under the Energy Charter Treaty and against the Czech Republic under the Japan-Czech Republic BIT.

The Tokyo Arbitration Landscape

In recent years, Japan has actively promoted Tokyo as an international arbitration hub. The Japan International Dispute Resolution Center (JIDRC) , operated by the Ministry of Justice, provides state-of-the-art hearing facilities in Tokyo and Osaka. The government has amended the Arbitration Act to enhance its attractiveness, including provisions for electronic filing, virtual hearings, and the recognition of emergency arbitrator decisions. The number of international arbitrations seated in Japan has increased steadily, particularly in the technology, construction, and financial services sectors.

Conclusion

Japanese arbitration law, anchored by the Arbitration Act 2003 and the New York Convention, provides a robust framework for both domestic and international arbitration. The JCAA offers efficient institutional arbitration services, and Japanese courts demonstrate strong support for arbitration through liberal enforcement of arbitration agreements, narrow construction of grounds for setting aside awards, and pro-enforcement treatment of foreign awards. While Tokyo has not yet achieved the caseload of Singapore, Hong Kong, or London, the steady growth in international arbitration cases, combined with Japan’s legal infrastructure and pro-arbitration judicial attitude, positions Japan as an increasingly significant arbitral seat in Asia.