# 仲裁法 / Arbitration Act — 第二十一条 (Article 21)

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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: 第二十一条 (Article 21)（仲裁人の任務の終了） — address `art-21`
- Text in force since: 2026-05-21
- URL (the page that opens at this provision): https://japanlaw.org/en/arbitration-act/art-21
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/415AC0000000138/art-21
- 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.

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### 第二十一条（仲裁人の任務の終了） — (End of the Arbitrator's Duties)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-21 · https://japanlaw.org/en/arbitration-act/art-21 · https://japanlaw.org/l/415AC0000000138/art-21</sup>

**第一項**  仲裁人の任務は、次に掲げる事由により、終了する。
<sup>art-21/par-1 · https://japanlaw.org/en/arbitration-act/art-21/par-1 · https://japanlaw.org/l/415AC0000000138/art-21/par-1</sup>
The arbitrator's duties end for the following reasons:
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **一**  仲裁人の死亡
  <sup>art-21/par-1/item-1 · https://japanlaw.org/en/arbitration-act/art-21/par-1/item-1 · https://japanlaw.org/l/415AC0000000138/art-21/par-1/item-1</sup>
  the death of the arbitrator;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **二**  仲裁人の辞任
  <sup>art-21/par-1/item-2 · https://japanlaw.org/en/arbitration-act/art-21/par-1/item-2 · https://japanlaw.org/l/415AC0000000138/art-21/par-1/item-2</sup>
  the resignation of the arbitrator;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **三**  当事者の合意による仲裁人の解任
  <sup>art-21/par-1/item-3 · https://japanlaw.org/en/arbitration-act/art-21/par-1/item-3 · https://japanlaw.org/l/415AC0000000138/art-21/par-1/item-3</sup>
  the dismissal of the arbitrator by the agreement of the parties;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **四**  第十九条第一項から第四項までに規定する忌避の手続においてされた忌避を理由があるとする決定
  <sup>art-21/par-1/item-4 · https://japanlaw.org/en/arbitration-act/art-21/par-1/item-4 · https://japanlaw.org/l/415AC0000000138/art-21/par-1/item-4</sup>
  a decision finding a challenge to be well-grounded, which has been made in the challenge procedure provided for in Article 19, paragraphs (1) through (4); and
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **五**  前条の規定による仲裁人の解任の決定
  <sup>art-21/par-1/item-5 · https://japanlaw.org/en/arbitration-act/art-21/par-1/item-5 · https://japanlaw.org/l/415AC0000000138/art-21/par-1/item-5</sup>
  a decision to dismiss the arbitrator under the preceding Article.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第二項**  第十九条第一項から第四項までに規定する忌避の手続又は前条の規定による解任の手続の進行中に、仲裁人が辞任し、又は当事者の合意により仲裁人が解任されたという事実のみから、当該仲裁人について第十八条第一項各号又は前条各号に掲げる事由があるものと推定してはならない。
<sup>art-21/par-2 · https://japanlaw.org/en/arbitration-act/art-21/par-2 · https://japanlaw.org/l/415AC0000000138/art-21/par-2</sup>
It is prohibited to presume that the grounds stated in the items of Article 18, paragraph (1) or the items of the preceding Article are found regarding the relevant arbitrator from the mere fact that the arbitrator resigned or was dismissed by the agreement of the parties during the course of the challenge procedure provided for in Article 19, paragraphs (1) through (4), or the procedure for dismissal under the preceding Article.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-21/par-1/item-4: 第十九条第一項から第四項まで → 仲裁法 第十九条第一項 (Article 19, paragraph (1)), art-19/par-1 — https://japanlaw.org/en/arbitration-act/art-19/par-1 · https://japanlaw.org/l/415AC0000000138/art-19/par-1
- art-21/par-1/item-4: 第十九条第一項から第四項まで → 仲裁法 第十九条第二項 (Article 19, paragraph (2)), art-19/par-2 — https://japanlaw.org/en/arbitration-act/art-19/par-2 · https://japanlaw.org/l/415AC0000000138/art-19/par-2
- art-21/par-1/item-4: 第十九条第一項から第四項まで → 仲裁法 第十九条第三項 (Article 19, paragraph (3)), art-19/par-3 — https://japanlaw.org/en/arbitration-act/art-19/par-3 · https://japanlaw.org/l/415AC0000000138/art-19/par-3
- art-21/par-1/item-4: 第十九条第一項から第四項まで → 仲裁法 第十九条第四項 (Article 19, paragraph (4)), art-19/par-4 — https://japanlaw.org/en/arbitration-act/art-19/par-4 · https://japanlaw.org/l/415AC0000000138/art-19/par-4
- art-21/par-1/item-5: 前条 → 仲裁法 第二十条 (Article 20), art-20 — https://japanlaw.org/en/arbitration-act/art-20 · https://japanlaw.org/l/415AC0000000138/art-20
- art-21/par-2: 第十九条第一項から第四項まで → 仲裁法 第十九条第一項 (Article 19, paragraph (1)), art-19/par-1 — https://japanlaw.org/en/arbitration-act/art-19/par-1 · https://japanlaw.org/l/415AC0000000138/art-19/par-1
- art-21/par-2: 第十九条第一項から第四項まで → 仲裁法 第十九条第二項 (Article 19, paragraph (2)), art-19/par-2 — https://japanlaw.org/en/arbitration-act/art-19/par-2 · https://japanlaw.org/l/415AC0000000138/art-19/par-2
- art-21/par-2: 第十九条第一項から第四項まで → 仲裁法 第十九条第三項 (Article 19, paragraph (3)), art-19/par-3 — https://japanlaw.org/en/arbitration-act/art-19/par-3 · https://japanlaw.org/l/415AC0000000138/art-19/par-3
- art-21/par-2: 第十九条第一項から第四項まで → 仲裁法 第十九条第四項 (Article 19, paragraph (4)), art-19/par-4 — https://japanlaw.org/en/arbitration-act/art-19/par-4 · https://japanlaw.org/l/415AC0000000138/art-19/par-4
- art-21/par-2: 前条 → 仲裁法 第二十条 (Article 20), art-20 — https://japanlaw.org/en/arbitration-act/art-20 · https://japanlaw.org/l/415AC0000000138/art-20
- art-21/par-2: 第十八条第一項 → 仲裁法 第十八条第一項 (Article 18, paragraph (1)), art-18/par-1 — https://japanlaw.org/en/arbitration-act/art-18/par-1 · https://japanlaw.org/l/415AC0000000138/art-18/par-1

## Cited by

1 provision cites this one. No official source publishes this direction.

- 仲裁法 第二十二条第一項（後任の仲裁人の選任方法） — https://japanlaw.org/en/arbitration-act/art-22/par-1 · https://japanlaw.org/l/415AC0000000138/art-22/par-1

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## 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