# 労働安全衛生法 / Industrial Safety and Health Act — 第一章 (Chapter 1) - Law: 労働安全衛生法 (Industrial Safety and Health Act), 昭和四十七年法律第五十七号 - English title "Industrial Safety and Health 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: 第一章 (Chapter 1) — address `ch-1` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/en/industrial-safety-and-health-act/ch-1 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/347AC0000000057/ch-1 - 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. --- ## 第一章　総則 — Chapter I General Provisions heading: Ministry of Justice translation — Japanese Law Translation Database System ch-1 · https://japanlaw.org/en/industrial-safety-and-health-act/ch-1 · https://japanlaw.org/l/347AC0000000057/ch-1 ### 第一条（目的） — (Purpose) caption: Ministry of Justice translation — Japanese Law Translation Database System art-1 · https://japanlaw.org/en/industrial-safety-and-health-act/art-1 · https://japanlaw.org/l/347AC0000000057/art-1 **第一項** この法律は、労働基準法（昭和二十二年法律第四十九号）と相まつて、労働災害の防止のための危害防止基準の確立、責任体制の明確化及び自主的活動の促進の措置を講ずる等その防止に関する総合的計画的な対策を推進することにより職場における労働者の安全と健康を確保するとともに、快適な職場環境の形成を促進することを目的とする。 art-1/par-1 · https://japanlaw.org/en/industrial-safety-and-health-act/art-1/par-1 · https://japanlaw.org/l/347AC0000000057/art-1/par-1 The purpose of this Act is to ensure workers' safety and health in the workplace and to facilitate the creation of comfortable work environments, by advancing comprehensive and systematic measures related to industrial injury prevention, such as the taking of measures to establish standards for hazard prevention, clarifying accountability structures, and promoting autonomous action with a view to preventing industrial injuries, in conjunction with the Labor Standards Act (Act No. 49 of 1947). Ministry of Justice translation — Japanese Law Translation Database System ### 第二条（定義） — (Definitions) caption: Ministry of Justice translation — Japanese Law Translation Database System art-2 · https://japanlaw.org/en/industrial-safety-and-health-act/art-2 · https://japanlaw.org/l/347AC0000000057/art-2 **第一項** この法律において、次の各号に掲げる用語の意義は、それぞれ当該各号に定めるところによる。 art-2/par-1 · https://japanlaw.org/en/industrial-safety-and-health-act/art-2/par-1 · https://japanlaw.org/l/347AC0000000057/art-2/par-1 In this Act, the meanings of the terms set forth in the following items are as prescribed in those items: Ministry of Justice translation — Japanese Law Translation Database System **一** 労働災害　労働者の就業に係る建設物、設備、原材料、ガス、蒸気、粉じん等により、又は作業行動その他業務に起因して、労働者が負傷し、疾病にかかり、又は死亡することをいう。 art-2/par-1/item-1 · https://japanlaw.org/en/industrial-safety-and-health-act/art-2/par-1/item-1 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-1 "industrial injury" means a worker being injured, contracting a disease, or dying due to a construction, equipment, raw material, gas, vapor, dust, or the like that is connected with the worker's employment, or as a result of a worker's work activities or other duties; Ministry of Justice translation — Japanese Law Translation Database System **二** 労働者　労働基準法第九条に規定する労働者（同居の親族のみを使用する事業又は事務所に使用される者及び家事使用人を除く。）をいう。 art-2/par-1/item-2 · https://japanlaw.org/en/industrial-safety-and-health-act/art-2/par-1/item-2 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-2 "worker" means a worker as prescribed in Article 9 of the Labor Standards Act (excluding a person who is employed at an undertaking or office at which only cohabitating relatives are employed, and excluding domestic servants); Ministry of Justice translation — Japanese Law Translation Database System **三** 事業者　事業を行う者で、労働者を使用するものをいう。 art-2/par-1/item-3 · https://japanlaw.org/en/industrial-safety-and-health-act/art-2/par-1/item-3 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-3 "employer" means a person that is engaged in an undertaking and that employs a worker or workers; Ministry of Justice translation — Japanese Law Translation Database System **三の二** 化学物質　元素及び化合物をいう。 art-2/par-1/item-3-2 · https://japanlaw.org/en/industrial-safety-and-health-act/art-2/par-1/item-3-2 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-3-2 "chemical substance" means an element or a compound; Ministry of Justice translation — Japanese Law Translation Database System **四** 作業環境測定　作業環境の実態（作業環境における労働者の有害な因子へのばく露の程度を含む。）を把握するため空気環境その他の作業環境について行うデザイン、サンプリング及び分析（解析を含む。）をいう。 art-2/par-1/item-4 · https://japanlaw.org/en/industrial-safety-and-health-act/art-2/par-1/item-4 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-4 "work environment monitoring" means designing a plan for monitoring, taking samplings of, and analyzing (including doing analytical research on) the air quality and other aspects of the work environment in order to assess the actual conditions of the work environment (including the degree to which workers are exposed to harmful factors in the work environment). machine translation, not official ### 第三条（事業者等の責務） — (Responsibilities of the Employer) caption: Ministry of Justice translation — Japanese Law Translation Database System art-3 · https://japanlaw.org/en/industrial-safety-and-health-act/art-3 · https://japanlaw.org/l/347AC0000000057/art-3 **第一項** 事業者は、単にこの法律で定める労働災害の防止のための最低基準を守るだけでなく、快適な職場環境の実現と労働条件の改善を通じて職場における労働者の安全と健康を確保するようにしなければならない。また、事業者は、国が実施する労働災害の防止に関する施策に協力するようにしなければならない。 art-3/par-1 · https://japanlaw.org/en/industrial-safety-and-health-act/art-3/par-1 · https://japanlaw.org/l/347AC0000000057/art-3/par-1 Not only must an employer comply with the minimum standards for preventing industrial injuries provided for in this Act, but it must also work to ensure the safety and health of workers in the workplace through the creation of a comfortable work environment and the improvement of working conditions. Furthermore, an employer must work to cooperate with government-implemented policies for preventing industrial injuries. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 機械、器具その他の設備を設計し、製造し、若しくは輸入する者、原材料を製造し、若しくは輸入する者又は建設物を建設し、若しくは設計する者は、これらの物の設計、製造、輸入又は建設に際して、これらの物が使用されることによる労働災害の発生の防止に資するように努めなければならない。 art-3/par-2 · https://japanlaw.org/en/industrial-safety-and-health-act/art-3/par-2 · https://japanlaw.org/l/347AC0000000057/art-3/par-2 A person that designs, manufactures, or imports the machinery, tools, or other equipment; that manufactures or imports raw materials; or that constructs or designs constructions; must endeavor, in designing, manufacturing, importing or constructing them, to contribute to preventing the occurrence of industrial injuries caused by their use. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 建設工事の注文者その他の仕事を他人に請け負わせる者は、施工方法、作業方法、工期、納期等について、安全で衛生的な作業の遂行を損なうおそれのある条件を付さないように配慮しなければならない。 art-3/par-3 · https://japanlaw.org/en/industrial-safety-and-health-act/art-3/par-3 · https://japanlaw.org/l/347AC0000000057/art-3/par-3 A person, such as an orderer of construction work, that contracts out a job to another person must take care that it does not attach conditions, regarding things such as construction techniques, work methods, the construction period and the delivery date, that could impede the safe and healthy performance of the work. machine translation, not official ### 第四条 art-4 · https://japanlaw.org/en/industrial-safety-and-health-act/art-4 · https://japanlaw.org/l/347AC0000000057/art-4 **第一項** 労働者及び労働者以外の者で労働者と同一の場所において仕事の作業に従事するものは、労働災害を防止するため必要な事項を守るほか、事業者その他の関係者が実施する労働災害の防止に関する措置に協力するように努めなければならない。 art-4/par-1 · https://japanlaw.org/en/industrial-safety-and-health-act/art-4/par-1 · https://japanlaw.org/l/347AC0000000057/art-4/par-1 In addition to observing the necessary particulars to prevent industrial injuries, a worker, and a person other than a worker who is engaged in work on a job at the same site as workers, must also endeavor to cooperate with measures to prevent industrial injuries that the employer and related parties implement. machine translation, not official ### 第五条（事業者に関する規定の適用） — (Application of Provisions Related to Employers) caption: Ministry of Justice translation — Japanese Law Translation Database System art-5 · https://japanlaw.org/en/industrial-safety-and-health-act/art-5 · https://japanlaw.org/l/347AC0000000057/art-5 **第一項** 二以上の建設業に属する事業の事業者が、一の場所において行われる当該事業の仕事を共同連帯して請け負つた場合においては、厚生労働省令で定めるところにより、そのうちの一人を代表者として定め、これを都道府県労働局長に届け出なければならない。 art-5/par-1 · https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-1 · https://japanlaw.org/l/347AC0000000057/art-5/par-1 If two or more employers with business undertakings in the construction industry have been contracted to work together jointly on a job that is involved in those undertakings that will be carried out at one site, they must designate one person from among themselves as a representative and file a notification of this with the Director of the Prefectural Labour Bureau, pursuant to Order of the Ministry of Health, Labour and Welfare . Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項の規定による届出がないときは、都道府県労働局長が代表者を指名する。 art-5/par-2 · https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-2 · https://japanlaw.org/l/347AC0000000057/art-5/par-2 If a notification under the provisions of the preceding paragraph has not been filed, the Director of the Prefectural Labour Bureau designates a representative. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 前二項の代表者の変更は、都道府県労働局長に届け出なければ、その効力を生じない。 art-5/par-3 · https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-3 · https://japanlaw.org/l/347AC0000000057/art-5/par-3 A change to the representative referred to in the preceding two paragraphs does not become valid unless a notification is filed with the Director of the Prefectural Labour Bureau. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 第一項に規定する場合においては、当該事業を同項又は第二項の代表者のみの事業と、当該代表者のみを当該事業の事業者と、当該事業の仕事に従事する労働者を当該代表者のみが使用する労働者とそれぞれみなして、この法律を適用する。 art-5/par-4 · https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-4 · https://japanlaw.org/l/347AC0000000057/art-5/par-4 In a case as provided in paragraph (1), this Act is applied by deeming the relevant business undertakings to be the undertakings of the representative referred to in paragraph (1) or (2) alone, the representative alone to be the employer in those undertakings, and the workers engaged in the jobs involved in those undertakings to be workers employed solely by the representative. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-2/par-1/item-2: 労働基準法第九条 → 労働基準法 第九条 (Article 9), art-9 — https://japanlaw.org/en/labor-standards-act/art-9 · https://japanlaw.org/l/322AC0000000049/art-9 - art-5/par-2: 前項 → 労働安全衛生法 第五条第一項 (Article 5, paragraph (1)), art-5/par-1 — https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-1 · https://japanlaw.org/l/347AC0000000057/art-5/par-1 - art-5/par-3: 前二項 → 労働安全衛生法 第五条第一項 (Article 5, paragraph (1)), art-5/par-1 — https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-1 · https://japanlaw.org/l/347AC0000000057/art-5/par-1 - art-5/par-3: 前二項 → 労働安全衛生法 第五条第二項 (Article 5, paragraph (2)), art-5/par-2 — https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-2 · https://japanlaw.org/l/347AC0000000057/art-5/par-2 - art-5/par-4: 第一項 → 労働安全衛生法 第五条第一項 (Article 5, paragraph (1)), art-5/par-1 — https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-1 · https://japanlaw.org/l/347AC0000000057/art-5/par-1 - art-5/par-4: 第二項 → 労働安全衛生法 第五条第二項 (Article 5, paragraph (2)), art-5/par-2 — https://japanlaw.org/en/industrial-safety-and-health-act/art-5/par-2 · https://japanlaw.org/l/347AC0000000057/art-5/par-2 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 労働安全衛生法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/347AC0000000057/20261001_507AC0000000033), retrieved 2026-10-17 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Industrial Safety and Health Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3440/tb), retrieved 2026-10-17 - claude-opus-5-5 — Machine translation, batch industrial-safety-and-health-act-20261017T185616-001, translated 2026-10-18 - This site's parser, version 209 — 労働安全衛生法 — structure, counts, cross-references and defined terms, computed 2026-10-17