# 会社法 / Companies Act — 第六百六条 (Article 606) This is the Markdown twin of https://japanlaw.org/en/companies-act/art-606. 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: 会社法 (Companies Act), 平成十七年法律第八十六号 - English title "Companies 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: 第六百六条 (Article 606)（任意退社） — address `art-606` - Text in force since: 2026-08-12 - URL (the page that opens at this provision): https://japanlaw.org/en/companies-act/art-606 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/417AC0000000086/art-606 - 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. --- ### 第六百六条（任意退社） — (Voluntary Withdrawal) caption: Ministry of Justice translation — Japanese Law Translation Database System art-606 · https://japanlaw.org/en/companies-act/art-606 · https://japanlaw.org/l/417AC0000000086/art-606 **第一項** 持分会社の存続期間を定款で定めなかった場合又はある社員の終身の間持分会社が存続することを定款で定めた場合には、各社員は、事業年度の終了の時において退社をすることができる。この場合においては、各社員は、六箇月前までに持分会社に退社の予告をしなければならない。 art-606/par-1 · https://japanlaw.org/en/companies-act/art-606/par-1 · https://japanlaw.org/l/417AC0000000086/art-606/par-1 If the duration of a membership company is not provided by the articles of incorporation, or the articles of incorporation provide that the membership company continues to exist for the life of a particular member, each member may withdraw at the end of the business year. In these cases, each member must give advance notice of withdrawal to the membership company more than six months in advance. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項の規定は、定款で別段の定めをすることを妨げない。 art-606/par-2 · https://japanlaw.org/en/companies-act/art-606/par-2 · https://japanlaw.org/l/417AC0000000086/art-606/par-2 The provisions of the preceding paragraph do not preclude the membership company from provisions to the contrary in the articles of incorporation. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 前二項の規定にかかわらず、各社員は、やむを得ない事由があるときは、いつでも退社することができる。 art-606/par-3 · https://japanlaw.org/en/companies-act/art-606/par-3 · https://japanlaw.org/l/417AC0000000086/art-606/par-3 Notwithstanding the provisions of the preceding two paragraphs, if there are any unavoidable grounds, any member may withdraw at any time. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-606/par-2: 前項 → 会社法 第六百六条第一項 (Article 606, paragraph (1)), art-606/par-1 — https://japanlaw.org/en/companies-act/art-606/par-1 · https://japanlaw.org/l/417AC0000000086/art-606/par-1 - art-606/par-3: 前二項 → 会社法 第六百六条第一項 (Article 606, paragraph (1)), art-606/par-1 — https://japanlaw.org/en/companies-act/art-606/par-1 · https://japanlaw.org/l/417AC0000000086/art-606/par-1 - art-606/par-3: 前二項 → 会社法 第六百六条第二項 (Article 606, paragraph (2)), art-606/par-2 — https://japanlaw.org/en/companies-act/art-606/par-2 · https://japanlaw.org/l/417AC0000000086/art-606/par-2 ## Cited by 6 provisions cite this one. No official source publishes this direction. - 会社法 第六百六条第二項（任意退社） — https://japanlaw.org/en/companies-act/art-606/par-2 · https://japanlaw.org/l/417AC0000000086/art-606/par-2 - 会社法 第六百六条第三項（任意退社） — https://japanlaw.org/en/companies-act/art-606/par-3 · https://japanlaw.org/l/417AC0000000086/art-606/par-3 - 会社法 第六百七条第一項（法定退社） — https://japanlaw.org/en/companies-act/art-607/par-1 · https://japanlaw.org/l/417AC0000000086/art-607/par-1 - 会社法 第六百十条第一項（退社に伴う定款のみなし変更） — https://japanlaw.org/en/companies-act/art-610/par-1 · https://japanlaw.org/l/417AC0000000086/art-610/par-1 - 会社法 第六百七十四条第一項第二号（適用除外） — https://japanlaw.org/en/companies-act/art-674/par-1/item-2 · https://japanlaw.org/l/417AC0000000086/art-674/par-1/item-2 - 社会保険労務士法 第二十五条の二十五第一項（一般社団法人及び一般財団法人に関する法律及び会社法の準用等） — https://japanlaw.org/en/labor-and-social-security-attorney-act/art-25-25/par-1 · https://japanlaw.org/l/343AC1000000089/art-25-25/par-1 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 会社法 — the text in force from 2026-08-12 (https://laws.e-gov.go.jp/law/417AC0000000086/20260812_508AC0000000064), retrieved 2026-09-17 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Companies Act — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4481/tb), retrieved 2026-09-17 - This site's parser, version 223 — 会社法 — structure, counts, cross-references and defined terms, computed 2026-09-17