# 労働契約法 / Labor Contracts Act — 第十条 (Article 10) This is the Markdown twin of https://japanlaw.org/en/labor-contracts-act/art-10. 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: 労働契約法 (Labor Contracts Act), 平成十九年法律第百二十八号 - English title "Labor Contracts 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: 第十条 (Article 10) — address `art-10` - Text in force since: 2020-04-01 - URL (the page that opens at this provision): https://japanlaw.org/en/labor-contracts-act/art-10 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/419AC0000000128/art-10 - 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. --- ### 第十条 art-10 · https://japanlaw.org/en/labor-contracts-act/art-10 · https://japanlaw.org/l/419AC0000000128/art-10 **第一項** 使用者が就業規則の変更により労働条件を変更する場合において、変更後の就業規則を労働者に周知させ、かつ、就業規則の変更が、労働者の受ける不利益の程度、労働条件の変更の必要性、変更後の就業規則の内容の相当性、労働組合等との交渉の状況その他の就業規則の変更に係る事情に照らして合理的なものであるときは、労働契約の内容である労働条件は、当該変更後の就業規則に定めるところによるものとする。ただし、労働契約において、労働者及び使用者が就業規則の変更によっては変更されない労働条件として合意していた部分については、第十二条に該当する場合を除き、この限りでない。 art-10/par-1 · https://japanlaw.org/en/labor-contracts-act/art-10/par-1 · https://japanlaw.org/l/419AC0000000128/art-10/par-1 When an Employer changes the working conditions by changing the rules of employment, if the Employer informs the Worker of the changed rules of employment, and if the change to the rules of employment is reasonable in light of the extent of the disadvantage to be incurred by the Worker, the need for changing the working conditions, the appropriateness of the contents of the changed rules of employment, the status of negotiations with a labor union or the like, or any other circumstances pertaining to the change to the rules of employment, the working conditions that constitute the contents of a labor contract are to be in accordance with such changed rules of employment; provided, however, that this does not apply to any portion of the labor contract which the Worker and the Employer have agreed on as being the working conditions that are not to be changed by any change to the rules of employment, except in cases that fall under Article 12. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-10/par-1: 第十二条 → 労働契約法 第十二条 (Article 12), art-12 — https://japanlaw.org/en/labor-contracts-act/art-12 · https://japanlaw.org/l/419AC0000000128/art-12 ## Cited by 3 provisions cite this one. No official source publishes this direction. - 労働契約法 第九条第一項（就業規則による労働契約の内容の変更） — https://japanlaw.org/en/labor-contracts-act/art-9/par-1 · https://japanlaw.org/l/419AC0000000128/art-9/par-1 - 労働契約法 第十三条第一項（法令及び労働協約と就業規則との関係） — https://japanlaw.org/en/labor-contracts-act/art-13/par-1 · https://japanlaw.org/l/419AC0000000128/art-13/par-1 - 労働契約法 第二十条第二項（船員に関する特例） — https://japanlaw.org/en/labor-contracts-act/art-20/par-2 · https://japanlaw.org/l/419AC0000000128/art-20/par-2 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 労働契約法 — the text in force from 2020-04-01 (https://laws.e-gov.go.jp/law/419AC0000000128/20200401_430AC0000000071), retrieved 2026-09-10 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Labor Contracts Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3744/tb), retrieved 2026-09-10 - This site's parser, version 211 — 労働契約法 — structure, counts, cross-references and defined terms, computed 2026-09-10