# 健康保険法 / Health Insurance Act — 第四十二条 (Article 42) - 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: 第四十二条 (Article 42)（被保険者の資格を取得した際の決定） — address `art-42` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/ja/health-insurance-act/art-42 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/211AC0000000070/art-42 - 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. --- ### 第四十二条（被保険者の資格を取得した際の決定） — (Determination upon Acquisition of Eligibility as an Insured Person) caption: Ministry of Justice translation — Japanese Law Translation Database System art-42 · https://japanlaw.org/ja/health-insurance-act/art-42 · https://japanlaw.org/l/211AC0000000070/art-42 **第一項** 保険者等は、被保険者の資格を取得した者があるときは、次に掲げる額を報酬月額として、標準報酬月額を決定する。 art-42/par-1 · https://japanlaw.org/ja/health-insurance-act/art-42/par-1 · https://japanlaw.org/l/211AC0000000070/art-42/par-1 When a person who obtains eligibility as an insured person, the insurer determines the standard monthly remuneration amount with the amounts listed below as the monthly remuneration amount: Ministry of Justice translation — Japanese Law Translation Database System **一** 月、週その他一定期間によって報酬が定められる場合には、被保険者の資格を取得した日の現在の報酬の額をその期間の総日数で除して得た額の三十倍に相当する額 art-42/par-1/item-1 · https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-1 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-1 if the wages are determined on the basis of a monthly, weekly or other fixed period, the amount equivalent to thirty times the amount obtained by dividing the amount of the remuneration as of the day on which eligibility as an insured person is obtained by the total number of days in that period; Ministry of Justice translation — Japanese Law Translation Database System **二** 日、時間、出来高又は請負によって報酬が定められる場合には、被保険者の資格を取得した月前一月間に当該事業所で、同様の業務に従事し、かつ、同様の報酬を受ける者が受けた報酬の額を平均した額 art-42/par-1/item-2 · https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-2 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-2 if the remuneration is determined on the basis of working days or hours, or in accordance with a piece rate or other contract price, the average of the amounts of remuneration received by persons engaged in similar work at the place of business for one month preceding the month in which eligibility as an insured person is obtained and who receive similar remuneration; Ministry of Justice translation — Japanese Law Translation Database System **三** 前二号の規定によって算定することが困難であるものについては、被保険者の資格を取得した月前一月間に、その地方で、同様の業務に従事し、かつ、同様の報酬を受ける者が受けた報酬の額 art-42/par-1/item-3 · https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-3 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-3 if it is difficult to calculate pursuant to the provisions of the preceding two items, the amount of remuneration received by a person engaged in similar work in the region for one month preceding the month in which eligibility as an insured person is obtained and who receives similar remuneration; or Ministry of Justice translation — Japanese Law Translation Database System **四** 前三号のうち二以上に該当する報酬を受ける場合には、それぞれについて、前三号の規定によって算定した額の合算額 art-42/par-1/item-4 · https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-4 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-4 in the case of receiving remuneration corresponding to two or more of the preceding three items, the total sum of the amounts calculated for each pursuant to the provisions of the preceding three items. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項の規定によって決定された標準報酬月額は、被保険者の資格を取得した月からその年の八月（六月一日から十二月三十一日までの間に被保険者の資格を取得した者については、翌年の八月）までの各月の標準報酬月額とする。 art-42/par-2 · https://japanlaw.org/ja/health-insurance-act/art-42/par-2 · https://japanlaw.org/l/211AC0000000070/art-42/par-2 A standard monthly remuneration amount determined pursuant to the provisions of the preceding paragraph is the standard monthly remuneration amount of each month since the day on which the person obtained eligibility as an insured person until August in that year (August in the following year if the person obtained eligibility as an insured person between July 1 to December 31). Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-42/par-1/item-3: 前二号 → 健康保険法 第四十二条第一項第一号 (Article 42, paragraph (1), item (i)), art-42/par-1/item-1 — https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-1 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-1 - art-42/par-1/item-3: 前二号 → 健康保険法 第四十二条第一項第二号 (Article 42, paragraph (1), item (ii)), art-42/par-1/item-2 — https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-2 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-2 - art-42/par-1/item-4: 前三号 → 健康保険法 第四十二条第一項第一号 (Article 42, paragraph (1), item (i)), art-42/par-1/item-1 — https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-1 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-1 - art-42/par-1/item-4: 前三号 → 健康保険法 第四十二条第一項第二号 (Article 42, paragraph (1), item (ii)), art-42/par-1/item-2 — https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-2 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-2 - art-42/par-1/item-4: 前三号 → 健康保険法 第四十二条第一項第三号 (Article 42, paragraph (1), item (iii)), art-42/par-1/item-3 — https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-3 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-3 - art-42/par-2: 前項 → 健康保険法 第四十二条第一項 (Article 42, paragraph (1)), art-42/par-1 — https://japanlaw.org/ja/health-insurance-act/art-42/par-1 · https://japanlaw.org/l/211AC0000000070/art-42/par-1 ## Cited by 9 provisions cite this one. No official source publishes this direction. - 健康保険法 第四十二条第一項第三号（被保険者の資格を取得した際の決定） — https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-3 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-3 - 健康保険法 第四十二条第一項第四号（被保険者の資格を取得した際の決定） — https://japanlaw.org/ja/health-insurance-act/art-42/par-1/item-4 · https://japanlaw.org/l/211AC0000000070/art-42/par-1/item-4 - 健康保険法 第四十二条第二項（被保険者の資格を取得した際の決定） — https://japanlaw.org/ja/health-insurance-act/art-42/par-2 · https://japanlaw.org/l/211AC0000000070/art-42/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 - 健康保険法 附則第八条の三の二第一項（適用除外の特例） — https://japanlaw.org/ja/health-insurance-act/suppl-2111-70/art-8-3-2/par-1 · https://japanlaw.org/l/211AC0000000070/suppl-2111-70/art-8-3-2/par-1 --- ## 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