# 仲裁法 / Arbitration Act — 第三十一条 (Article 31) This is the Markdown twin of https://japanlaw.org/ja/arbitration-act/art-31. 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: 第三十一条 (Article 31)（当事者の陳述の時期的制限） — address `art-31` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/ja/arbitration-act/art-31 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/415AC0000000138/art-31 - 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. --- ### 第三十一条（当事者の陳述の時期的制限） — (Time Limit of Statements by the Parties) caption: Ministry of Justice translation — Japanese Law Translation Database System art-31 · https://japanlaw.org/ja/arbitration-act/art-31 · https://japanlaw.org/l/415AC0000000138/art-31 **第一項** 仲裁申立人（仲裁手続において、これを開始させるための行為をした当事者をいう。以下同じ。）は、仲裁廷が定めた期間内に、申立ての趣旨、申立ての根拠となる事実及び紛争の要点を陳述しなければならない。この場合において、仲裁申立人は、取り調べる必要があると思料するすべての証拠書類を提出し、又は提出予定の証拠書類その他の証拠を引用することができる。 art-31/par-1 · https://japanlaw.org/ja/arbitration-act/art-31/par-1 · https://japanlaw.org/l/415AC0000000138/art-31/par-1 An arbitration petitioner (meaning a party that carried out acts to commence the arbitration procedure; the same applies hereinafter) must state the object of a petition, the facts supporting their petition and points of the dispute within the period determined by the arbitral tribunal. In this case, the arbitration petitioner may submit all documentary evidence they consider necessary to be examined or quote documentary evidence or other evidence they plan to submit. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 仲裁被申立人（仲裁申立人以外の仲裁手続の当事者をいう。以下同じ。）は、仲裁廷が定めた期間内に、前項の規定により陳述された事項についての自己の主張を陳述しなければならない。この場合においては、同項後段の規定を準用する。 art-31/par-2 · https://japanlaw.org/ja/arbitration-act/art-31/par-2 · https://japanlaw.org/l/415AC0000000138/art-31/par-2 An arbitration respondent (meaning the party to the arbitration procedure other than the arbitration petitioner; the same applies hereinafter) must state their allegation regarding the matters stated pursuant to the provisions of the preceding paragraph, within the period determined by the arbitral tribunal. In this case, the provisions of the second sentence of that paragraph apply mutatis mutandis. Ministry of Justice translation — Japanese Law Translation Database System **第三項** すべての当事者は、仲裁手続の進行中において、自己の陳述の変更又は追加をすることができる。ただし、当該変更又は追加が時機に後れてされたものであるときは、仲裁廷は、これを許さないことができる。 art-31/par-3 · https://japanlaw.org/ja/arbitration-act/art-31/par-3 · https://japanlaw.org/l/415AC0000000138/art-31/par-3 All parties may amend or supplement their statements during the course of the arbitration procedure; provided, however, that if the amendment or supplement has been made outside the appropriate time, the arbitral tribunal may decide not to allow that amendment or supplement. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 前三項の規定は、当事者間に別段の合意がある場合には、適用しない。 art-31/par-4 · https://japanlaw.org/ja/arbitration-act/art-31/par-4 · https://japanlaw.org/l/415AC0000000138/art-31/par-4 The provisions of the preceding three paragraphs do not apply in cases where otherwise agreed by the parties. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-31/par-2: 前項 → 仲裁法 第三十一条第一項 (Article 31, paragraph (1)), art-31/par-1 — https://japanlaw.org/ja/arbitration-act/art-31/par-1 · https://japanlaw.org/l/415AC0000000138/art-31/par-1 - art-31/par-4: 前三項 → 仲裁法 第三十一条第一項 (Article 31, paragraph (1)), art-31/par-1 — https://japanlaw.org/ja/arbitration-act/art-31/par-1 · https://japanlaw.org/l/415AC0000000138/art-31/par-1 - art-31/par-4: 前三項 → 仲裁法 第三十一条第二項 (Article 31, paragraph (2)), art-31/par-2 — https://japanlaw.org/ja/arbitration-act/art-31/par-2 · https://japanlaw.org/l/415AC0000000138/art-31/par-2 - art-31/par-4: 前三項 → 仲裁法 第三十一条第三項 (Article 31, paragraph (3)), art-31/par-3 — https://japanlaw.org/ja/arbitration-act/art-31/par-3 · https://japanlaw.org/l/415AC0000000138/art-31/par-3 ## Cited by 4 provisions cite this one. No official source publishes this direction. - 仲裁法 第三十一条第二項（当事者の陳述の時期的制限） — https://japanlaw.org/ja/arbitration-act/art-31/par-2 · https://japanlaw.org/l/415AC0000000138/art-31/par-2 - 仲裁法 第三十一条第四項（当事者の陳述の時期的制限） — https://japanlaw.org/ja/arbitration-act/art-31/par-4 · https://japanlaw.org/l/415AC0000000138/art-31/par-4 - 仲裁法 第三十三条第一項（不熱心な当事者がいる場合の取扱い） — https://japanlaw.org/ja/arbitration-act/art-33/par-1 · https://japanlaw.org/l/415AC0000000138/art-33/par-1 - 仲裁法 第三十三条第二項（不熱心な当事者がいる場合の取扱い） — https://japanlaw.org/ja/arbitration-act/art-33/par-2 · https://japanlaw.org/l/415AC0000000138/art-33/par-2 --- ## Sources - 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 — 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