# 労働安全衛生法 / Industrial Safety and Health Act — 第二条 (Article 2)

- 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: 第二条 (Article 2)（定義） — address `art-2`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/industrial-safety-and-health-act/art-2
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/347AC0000000057/art-2
- 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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### 第二条（定義） — (Definitions)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-2 · https://japanlaw.org/ja/industrial-safety-and-health-act/art-2 · https://japanlaw.org/l/347AC0000000057/art-2</sup>

**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。
<sup>art-2/par-1 · https://japanlaw.org/ja/industrial-safety-and-health-act/art-2/par-1 · https://japanlaw.org/l/347AC0000000057/art-2/par-1</sup>
In this Act, the meanings of the terms set forth in the following items are as prescribed in those items:
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **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。
  <sup>art-2/par-1/item-1 · https://japanlaw.org/ja/industrial-safety-and-health-act/art-2/par-1/item-1 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-1</sup>
  "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;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **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。
  <sup>art-2/par-1/item-2 · https://japanlaw.org/ja/industrial-safety-and-health-act/art-2/par-1/item-2 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-2</sup>
  "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);
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **三**  事業者　事業を行う者で、労働者を使用するものをいう。
  <sup>art-2/par-1/item-3 · https://japanlaw.org/ja/industrial-safety-and-health-act/art-2/par-1/item-3 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-3</sup>
  "employer" means a person that is engaged in an undertaking and that employs a worker or workers;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **三の二**  化学物質　元素及び化合物をいう。
  <sup>art-2/par-1/item-3-2 · https://japanlaw.org/ja/industrial-safety-and-health-act/art-2/par-1/item-3-2 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-3-2</sup>
  "chemical substance" means an element or a compound;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **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。
  <sup>art-2/par-1/item-4 · https://japanlaw.org/ja/industrial-safety-and-health-act/art-2/par-1/item-4 · https://japanlaw.org/l/347AC0000000057/art-2/par-1/item-4</sup>
  "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).
  <sup>machine translation, not official</sup>

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## 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/ja/labor-standards-act/art-9 · https://japanlaw.org/l/322AC0000000049/art-9

## Cited by

5 provisions cite this one. No official source publishes this direction.

- 健康保険法 第百五十条第二項（保健事業及び福祉事業） — https://japanlaw.org/ja/health-insurance-act/art-150/par-2 · https://japanlaw.org/l/211AC0000000070/art-150/par-2
- 労働者派遣事業の適正な運営の確保及び派遣労働者の保護等に関する法律 第四十五条第一項（労働安全衛生法の適用に関する特例等） — https://japanlaw.org/ja/worker-dispatch-act/art-45/par-1 · https://japanlaw.org/l/360AC0000000088/art-45/par-1
- 労働者災害補償保険法 第二十七条第一項 — https://japanlaw.org/ja/industrial-accident-insurance-act/art-27/par-1 · https://japanlaw.org/l/322AC0000000050/art-27/par-1
- 国民健康保険法 第八十二条第二項 — https://japanlaw.org/ja/national-health-insurance-act/art-82/par-2 · https://japanlaw.org/l/333AC0000000192/art-82/par-2
- 高齢者の医療の確保に関する法律 第二十一条第二項（他の法令に基づく健康診断との関係） — https://japanlaw.org/ja/elderly-medical-care-act/art-21/par-2 · https://japanlaw.org/l/357AC0000000080/art-21/par-2

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## 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
