# 労働基準法施行規則 / Ordinance for Enforcement of the Labor Standards Act — 第四条 (Article 4)

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- Law: 労働基準法施行規則 (Ordinance for Enforcement of the Labor Standards Act), 昭和二十二年厚生省令第二十三号
- English title "Ordinance for Enforcement of the Labor Standards Act": Ministry of Justice translation
- Kind: MinisterialOrdinance — 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: 第四条 (Article 4) — address `art-4`
- Text in force since: 2026-04-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/labor-standards-act-enforcement-ordinance/art-4
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/322M40000100023/art-4
- 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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### 第四条
<sup>art-4 · https://japanlaw.org/ja/labor-standards-act-enforcement-ordinance/art-4 · https://japanlaw.org/l/322M40000100023/art-4</sup>

**第一項**  法第十二条第三項第一号から第四号までの期間が平均賃金を算定すべき事由の発生した日以前三箇月以上にわたる場合又は雇入れの日に平均賃金を算定すべき事由の発生した場合の平均賃金は、都道府県労働局長の定めるところによる。
<sup>art-4/par-1 · https://japanlaw.org/ja/labor-standards-act-enforcement-ordinance/art-4/par-1 · https://japanlaw.org/l/322M40000100023/art-4/par-1</sup>
In the event that the periods stipulated in items (i) to (iv) of paragraph (3) of Article 12 of the Act are three months or more preceding the day on which there arises a need for calculation of a worker's average wage, or in the event there arises a need for calculation of a worker's average wage on the day that the worker is taken into employment, the average wage of the worker shall be stipulated by the directors of the prefectural labor offices.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-4/par-1: 法第十二条第三項第一号から第四号まで → 労働基準法 第十二条第三項第一号 (Article 12, paragraph (3), item (i)), art-12/par-3/item-1 — https://japanlaw.org/ja/labor-standards-act/art-12/par-3/item-1 · https://japanlaw.org/l/322AC0000000049/art-12/par-3/item-1
- art-4/par-1: 法第十二条第三項第一号から第四号まで → 労働基準法 第十二条第三項第二号 (Article 12, paragraph (3), item (ii)), art-12/par-3/item-2 — https://japanlaw.org/ja/labor-standards-act/art-12/par-3/item-2 · https://japanlaw.org/l/322AC0000000049/art-12/par-3/item-2
- art-4/par-1: 法第十二条第三項第一号から第四号まで → 労働基準法 第十二条第三項第三号 (Article 12, paragraph (3), item (iii)), art-12/par-3/item-3 — https://japanlaw.org/ja/labor-standards-act/art-12/par-3/item-3 · https://japanlaw.org/l/322AC0000000049/art-12/par-3/item-3
- art-4/par-1: 法第十二条第三項第一号から第四号まで → 労働基準法 第十二条第三項第四号 (Article 12, paragraph (3), item (iv)), art-12/par-3/item-4 — https://japanlaw.org/ja/labor-standards-act/art-12/par-3/item-4 · https://japanlaw.org/l/322AC0000000049/art-12/par-3/item-4

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 労働基準法施行規則 — the text in force from 2026-04-01 (https://laws.e-gov.go.jp/law/322M40000100023/20260401_508M60000100057), retrieved 2026-09-10
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Ordinance for Enforcement of the Labor Standards Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/2605/tb), retrieved 2026-09-10
- This site's parser, version 222 — 労働基準法施行規則 — structure, counts, cross-references and defined terms, computed 2026-09-10
