# 健康保険法 / Health Insurance Act — 第四十三条 (Article 43) - Law: 健康保険法 (Health Insurance Act), 大正十一年法律第七十号 - English title "Health Insurance 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: 第四十三条 (Article 43)（改定） — address `art-43` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/ja/health-insurance-act/art-43 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/211AC0000000070/art-43 - 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. --- ### 第四十三条（改定） — (Revision) caption: Ministry of Justice translation — Japanese Law Translation Database System art-43 · https://japanlaw.org/ja/health-insurance-act/art-43 · https://japanlaw.org/l/211AC0000000070/art-43 **第一項** 保険者等は、被保険者が現に使用される事業所において継続した三月間（各月とも、報酬支払の基礎となった日数が、十七日以上でなければならない。）に受けた報酬の総額を三で除して得た額が、その者の標準報酬月額の基礎となった報酬月額に比べて、著しく高低を生じた場合において、必要があると認めるときは、その額を報酬月額として、その著しく高低を生じた月の翌月から、標準報酬月額を改定することができる。 art-43/par-1 · https://japanlaw.org/ja/health-insurance-act/art-43/par-1 · https://japanlaw.org/l/211AC0000000070/art-43/par-1 If the amount obtained by dividing the total amount of remuneration received for three consecutive months at the place of business employing an insured person (in each month, the number of days based on which remuneration is paid must be no less than 17 days) by three is significantly higher or lower than the person's monthly remuneration that is the basis of the standard monthly remuneration amount and the insurer finds it necessary, the insurer may revise the standard monthly remuneration amount by setting the first-mentioned amount as the monthly remuneration amount starting from the month following the months in which the monthly remuneration amount was significantly high or low. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項の規定によって改定された標準報酬月額は、その年の八月（七月から十二月までのいずれかの月から改定されたものについては、翌年の八月）までの各月の標準報酬月額とする。 art-43/par-2 · https://japanlaw.org/ja/health-insurance-act/art-43/par-2 · https://japanlaw.org/l/211AC0000000070/art-43/par-2 A standard monthly remuneration amount revised pursuant to the provisions of the preceding paragraph is the standard monthly remuneration amount for each month until August in that year (until August in the following year for a revision in any month from July to December). Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-43/par-2: 前項 → 健康保険法 第四十三条第一項 (Article 43, paragraph (1)), art-43/par-1 — https://japanlaw.org/ja/health-insurance-act/art-43/par-1 · https://japanlaw.org/l/211AC0000000070/art-43/par-1 ## Cited by 8 provisions cite this one. No official source publishes this direction. - 健康保険法 第四十一条第一項（定時決定） — https://japanlaw.org/ja/health-insurance-act/art-41/par-1 · https://japanlaw.org/l/211AC0000000070/art-41/par-1 - 健康保険法 第四十一条第三項（定時決定） — https://japanlaw.org/ja/health-insurance-act/art-41/par-3 · https://japanlaw.org/l/211AC0000000070/art-41/par-3 - 健康保険法 第四十三条第二項（改定） — https://japanlaw.org/ja/health-insurance-act/art-43/par-2 · https://japanlaw.org/l/211AC0000000070/art-43/par-2 - 健康保険法 第四十四条第一項（報酬月額の算定の特例） — https://japanlaw.org/ja/health-insurance-act/art-44/par-1 · https://japanlaw.org/l/211AC0000000070/art-44/par-1 - 健康保険法 第四十四条第三項（報酬月額の算定の特例） — https://japanlaw.org/ja/health-insurance-act/art-44/par-3 · https://japanlaw.org/l/211AC0000000070/art-44/par-3 - 健康保険法 第四十七条第一項（任意継続被保険者の標準報酬月額） — https://japanlaw.org/ja/health-insurance-act/art-47/par-1 · https://japanlaw.org/l/211AC0000000070/art-47/par-1 - 健康保険法 第二百四条第一項第五号（機構への厚生労働大臣の権限に係る事務の委任） — https://japanlaw.org/ja/health-insurance-act/art-204/par-1/item-5 · https://japanlaw.org/l/211AC0000000070/art-204/par-1/item-5 - 健康保険法 附則第三条第四項（特定健康保険組合） — https://japanlaw.org/ja/health-insurance-act/suppl-2111-70/art-3/par-4 · https://japanlaw.org/l/211AC0000000070/suppl-2111-70/art-3/par-4 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 健康保険法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/211AC0000000070/20261001_507AC0000000087), retrieved 2026-10-10 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Health Insurance Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3266/tb), retrieved 2026-10-10 - This site's parser, version 189 — 健康保険法 — structure, counts, cross-references and defined terms, computed 2026-10-10