# 仲裁法 / Arbitration Act — 第十三条 (Article 13) This is the Markdown twin of https://japanlaw.org/en/arbitration-act/art-13. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp. - Law: 仲裁法 (Arbitration Act), 平成十五年法律第百三十八号 - English title "Arbitration Act": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第十三条 (Article 13)（仲裁合意の効力等） — address `art-13` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/en/arbitration-act/art-13 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/415AC0000000138/art-13 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第十三条（仲裁合意の効力等） — (Validity of Arbitration Agreement) caption: Ministry of Justice translation — Japanese Law Translation Database System art-13 · https://japanlaw.org/en/arbitration-act/art-13 · https://japanlaw.org/l/415AC0000000138/art-13 **第一項** 仲裁合意は、法令に別段の定めがある場合を除き、当事者が和解をすることができる民事上の紛争（離婚又は離縁の紛争を除く。）を対象とする場合に限り、その効力を有する。 art-13/par-1 · https://japanlaw.org/en/arbitration-act/art-13/par-1 · https://japanlaw.org/l/415AC0000000138/art-13/par-1 Except as otherwise provided for in laws and regulations, an arbitration agreement is effective only when its subject is a civil dispute (excluding disputes of divorce or dissolution of adoptive relation) which can be settled between the parties. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 仲裁合意は、当事者の全部が署名した文書、当事者が交換した書簡又は電報（ファクシミリ装置その他の隔地者間の通信手段で文字による通信内容の記録が受信者に提供されるものを用いて送信されたものを含む。）その他の書面によってしなければならない。 art-13/par-2 · https://japanlaw.org/en/arbitration-act/art-13/par-2 · https://japanlaw.org/l/415AC0000000138/art-13/par-2 An arbitration agreement must be in writing, such as in the form of a document signed by all the parties, letters or telegrams exchanged between the parties (including those sent by facsimile device or other communication measures for parties at a distance which provides the recipient with a written record of the communicated content), or other documents. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 書面によってされた契約において、仲裁合意を内容とする条項が記載された文書が当該契約の一部を構成するものとして引用されているときは、その仲裁合意は、書面によってされたものとみなす。 art-13/par-3 · https://japanlaw.org/en/arbitration-act/art-13/par-3 · https://japanlaw.org/l/415AC0000000138/art-13/par-3 If a document containing a clause of an arbitration agreement is quoted in a contract concluded in writing as constituting part of the contract, that arbitration agreement is deemed to be made in writing. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 仲裁合意がその内容を記録した電磁的記録（電子的方式、磁気的方式その他人の知覚によっては認識することができない方式で作られる記録であって、電子計算機による情報処理の用に供されるものをいう。第六項において同じ。）によってされたときは、その仲裁合意は、書面によってされたものとみなす。 art-13/par-4 · https://japanlaw.org/en/arbitration-act/art-13/par-4 · https://japanlaw.org/l/415AC0000000138/art-13/par-4 If an arbitration agreement is made in an electronic or magnetic record (meaning a record used in computerized information processing which is created in an electronic form, magnetic form, or any other form that cannot be perceived by the human senses; the same applies in paragraph (6)) recording its contents, that arbitration agreement is deemed to be made in writing. Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "If an arbitration agreement is made in an electronic or magnetic record (meaning a record used computerized information processing which is created in an electronic form, magnetic form, or any other form that cannot be perceived by the human senses; the same applies in paragraph (6)) recording its contents, that arbitration agreement is deemed to be made in writing." — https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb **第五項** 仲裁手続において、一方の当事者が提出した主張書面に仲裁合意の内容の記載があり、これに対して他方の当事者が提出した主張書面にこれを争う旨の記載がないときは、その仲裁合意は、書面によってされたものとみなす。 art-13/par-5 · https://japanlaw.org/en/arbitration-act/art-13/par-5 · https://japanlaw.org/l/415AC0000000138/art-13/par-5 In an arbitration procedure, if a written allegation that a party has submitted contains the contents of an arbitration agreement, and another written allegation that the other party has submitted in response to the allegation in question does not contain anything to dispute the contents of the arbitration agreement, the arbitration agreement is deemed to be made in writing. Ministry of Justice translation — Japanese Law Translation Database System **第六項** 書面によらないでされた契約において、仲裁合意を内容とする条項が記載され、又は記録された文書又は電磁的記録が当該契約の一部を構成するものとして引用されているときは、その仲裁合意は、書面によってされたものとみなす。 art-13/par-6 · https://japanlaw.org/en/arbitration-act/art-13/par-6 · https://japanlaw.org/l/415AC0000000138/art-13/par-6 If a document or electronic or magnetic record including a written or recorded clause of an arbitration agreement is quoted in a contract that is not concluded in writing as constituting a part of that contract, the arbitration agreement is deemed to be made in writing. Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "If a document or electronic or magnetic record including a clause written of an arbitration agreement is quoted in a contract that is not concluded in writing as constituting a part of that contract, the arbitration agreement is deemed to be made in writing." — https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb **第七項** 仲裁合意を含む一の契約において、仲裁合意以外の契約条項が無効、取消しその他の事由により効力を有しないものとされる場合においても、仲裁合意は、当然には、その効力を妨げられない。 art-13/par-7 · https://japanlaw.org/en/arbitration-act/art-13/par-7 · https://japanlaw.org/l/415AC0000000138/art-13/par-7 In regard to a contract containing an arbitration agreement, even if the clauses of the contract other than that of the arbitration agreement are not valid due to nullity or rescission or for any other reasons, the validity of the arbitration agreement is not automatically impaired. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-13/par-4: 第六項 → 仲裁法 第十三条第六項 (Article 13, paragraph (6)), art-13/par-6 — https://japanlaw.org/en/arbitration-act/art-13/par-6 · https://japanlaw.org/l/415AC0000000138/art-13/par-6 ## Cited by 2 provisions cite this one. No official source publishes this direction. - 仲裁法 第十三条第四項（仲裁合意の効力等） — https://japanlaw.org/en/arbitration-act/art-13/par-4 · https://japanlaw.org/l/415AC0000000138/art-13/par-4 - 仲裁法 附則第三条第一項（仲裁合意の方式に関する経過措置） — https://japanlaw.org/en/arbitration-act/suppl-5051-15/art-3/par-1 · https://japanlaw.org/l/415AC0000000138/suppl-5051-15/art-3/par-1 --- ## Sources - claude-opus-5-5 — Corrections to the Ministry of Justice's English of paragraphs, written 2026-11-02 - e-Gov 法令検索, Digital Agency (デジタル庁) — 仲裁法 — the text in force from 2026-05-21 (https://laws.e-gov.go.jp/law/415AC0000000138/20260521_504AC0000000048), retrieved 2026-11-01 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Arbitration Act (仲裁法), Article 13, paragraph (4) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb), retrieved 2026-11-01 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Arbitration Act (仲裁法), Article 13, paragraph (6) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb), retrieved 2026-11-01 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Arbitration Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb), retrieved 2026-11-01 - This site's parser, version 219 — 仲裁法 — structure, counts, cross-references and defined terms, computed 2026-11-01