# 労働契約法 / Labor Contracts Act — 第十二条 (Article 12) This is the Markdown twin of https://japanlaw.org/ja/labor-contracts-act/art-12. 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: 第十二条 (Article 12)（就業規則違反の労働契約） — address `art-12` - Text in force since: 2020-04-01 - URL (the page that opens at this provision): https://japanlaw.org/ja/labor-contracts-act/art-12 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/419AC0000000128/art-12 - 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. --- ### 第十二条（就業規則違反の労働契約） — (Labor Contract in Violation of the Rules of Employment) caption: Ministry of Justice translation — Japanese Law Translation Database System art-12 · https://japanlaw.org/ja/labor-contracts-act/art-12 · https://japanlaw.org/l/419AC0000000128/art-12 **第一項** 就業規則で定める基準に達しない労働条件を定める労働契約は、その部分については、無効とする。この場合において、無効となった部分は、就業規則で定める基準による。 art-12/par-1 · https://japanlaw.org/ja/labor-contracts-act/art-12/par-1 · https://japanlaw.org/l/419AC0000000128/art-12/par-1 A labor contract that stipulates any working conditions that do not meet the standards established by the rules of employment is invalid with regard to such portions. In this case, the portions which have become invalid are governed by the standards established by the rules of employment. Ministry of Justice translation — Japanese Law Translation Database System ## Cited by 6 provisions cite this one. No official source publishes this direction. - 労働基準法 第九十三条第一項（労働契約との関係） — https://japanlaw.org/ja/labor-standards-act/art-93/par-1 · https://japanlaw.org/l/322AC0000000049/art-93/par-1 - 労働契約法 第七条第一項 — https://japanlaw.org/ja/labor-contracts-act/art-7/par-1 · https://japanlaw.org/l/419AC0000000128/art-7/par-1 - 労働契約法 第十条第一項 — https://japanlaw.org/ja/labor-contracts-act/art-10/par-1 · https://japanlaw.org/l/419AC0000000128/art-10/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/ja/labor-contracts-act/art-13/par-1 · https://japanlaw.org/l/419AC0000000128/art-13/par-1 - 労働契約法 第二十条第一項（船員に関する特例） — https://japanlaw.org/ja/labor-contracts-act/art-20/par-1 · https://japanlaw.org/l/419AC0000000128/art-20/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/ja/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