# 仲裁法 / Arbitration Act — 第二章 (Chapter 2)

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- 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: 第二章 (Chapter 2) — address `ch-2`
- Text: the text as amended with effect from 2028-06-13 (On a day set by Cabinet Order, no later than 13 June 2028 — the amending law allows up to five years from promulgation. The exact day is not fixed yet.) — NOT yet in force (revision 20280613_505AC0000000053)
- URL (this text's page, at this provision): https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2
- The same address in the text in force (its wording there may differ): https://japanlaw.org/en/arbitration-act/ch-2
- Every provision below carries its address and its place on this text's page 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.
The Ministry's English is given only where this text's Japanese is a wording
the Ministry translated — the same as the text in force, or for a text not yet
in force, a wording it translated ahead; every other paragraph's English is
machine translation.

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## 第二章　仲裁合意 — Chapter II Arbitration Agreement
<sup>heading: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>ch-2 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2</sup>

### 第十五条（仲裁合意の効力等） — (Validity of Arbitration Agreement)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-15 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15</sup>

**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。
<sup>art-15/par-1 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15/par-1</sup>
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.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**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。
<sup>art-15/par-2 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15/par-2</sup>
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.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**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。
<sup>art-15/par-3 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15/par-3</sup>
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.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第四項**  仲裁合意がその内容を記録した電磁的記録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。
<sup>art-15/par-4 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15/par-4</sup>
If an arbitration agreement is made in an electronic or magnetic record recording its contents, that arbitration agreement is deemed to be made in writing.
<sup>machine translation, not official</sup>

**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。
<sup>art-15/par-5 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15/par-5</sup>
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.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**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。
<sup>art-15/par-6 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15/par-6</sup>
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.
<sup>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</sup>

**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。
<sup>art-15/par-7 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-15/par-7</sup>
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.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

### 第十六条（仲裁合意と本案訴訟） — (Arbitration Agreement and Suit on the Merits)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-16 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-16</sup>

**第一項**  仲裁合意の対象となる民事上の紛争について訴えが提起されたときは、受訴裁判所は、被告の申立てにより、訴えを却下しなければならない。ただし、次に掲げる場合は、この限りでない。
<sup>art-16/par-1 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-16/par-1</sup>
If an action is filed for a civil dispute which is subject to an arbitration agreement, the court in charge of the case must dismiss the action without prejudice upon the petition of the defendant; provided, however, that this does not apply to the following cases:
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **一**  仲裁合意が無効、取消しその他の事由により効力を有しないとき。
  <sup>art-16/par-1/item-1 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-16/par-1/item-1</sup>
  if the arbitration agreement is not valid due to nullity or rescission or for any other reasons;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **二**  仲裁合意に基づく仲裁手続を行うことができないとき。
  <sup>art-16/par-1/item-2 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-16/par-1/item-2</sup>
  if it is impossible to carry out an arbitration procedure based on an arbitration agreement; and
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **三**  当該申立てが、本案について、被告が弁論をし、又は弁論準備手続において申述をした後にされたものであるとき。
  <sup>art-16/par-1/item-3 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-16/par-1/item-3</sup>
  if the petition was filed after the defendant presented oral arguments concerning the merits or made statements concerning the merits in preparatory proceedings.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第二項**  仲裁廷は、前項の訴えに係る訴訟が裁判所に係属する間においても、仲裁手続を開始し、又は続行し、かつ、仲裁判断をすることができる。
<sup>art-16/par-2 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-16/par-2</sup>
Even while a suit related to the action referred to in the preceding paragraph is pending in the court, an arbitral tribunal may commence or continue the arbitration procedure and make an arbitral award.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

### 第十七条（仲裁合意と裁判所の保全処分） — (Arbitration Agreement and Provisional Order by the Court)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-17 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-17</sup>

**第一項**  仲裁合意は、その当事者が、当該仲裁合意の対象となる民事上の紛争に関して、仲裁手続の開始前又は進行中に、裁判所に対して保全処分の申立てをすること、及びその申立てを受けた裁判所が保全処分を命ずることを妨げない。
<sup>art-17/par-1 · https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-17/par-1</sup>
An arbitration agreement does not preclude the parties from filing a petition for a provisional order with the court before the commencement or during the course of the arbitration procedure in regard to the civil dispute that is the subject of the arbitration agreement, and does not preclude the court that has received the petition from issuing a provisional order.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-16/par-2: 前項 → 仲裁法 第十六条第一項 (Article 16, paragraph (1)), art-16/par-1 — https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053/text/ch-2#art-16/par-1

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## 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 as 令和五年法律第五十三号 leaves it, from a date not yet fixed (https://laws.e-gov.go.jp/law/415AC0000000138/20280613_505AC0000000053), 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
- claude-sonnet-5-5 — Machine translation of amended wording, batch arbitration-act-amendments-20261101T163107-001, translated 2026-11-02
- This site's parser, version 219 — 仲裁法 — structure, counts, cross-references and defined terms, computed 2026-11-01