# 厚生年金保険法 / Employees' Pension Insurance Act — 第四十二条 (Supplementary Provisions, Article 42)

- Law: 厚生年金保険法 (Employees' Pension Insurance Act), 昭和二十九年法律第百十五号
- English title "Employees' Pension 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 (Supplementary Provisions, Article 42)（厚生年金保険の被保険者資格の取得及び喪失の経過措置） — address `suppl-3601-34/art-42`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3601-34/art-42
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/329AC0000000115/suppl-3601-34/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.

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### 第四十二条（厚生年金保険の被保険者資格の取得及び喪失の経過措置） — Transitional Measures for Acquisition and Loss of Status as an Insured Covered by Employees' Pension Insurance
<sup>caption: machine translation, not official</sup>
<sup>suppl-3601-34/art-42 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3601-34/art-42 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-42</sup>

**第一項**  大正十年四月二日以後に生まれた者であり、かつ、施行日の前日において旧船員保険法第十七条の規定による船員保険の被保険者であつた者であつて、施行日において新厚生年金保険法第六条第一項第三号に規定する船舶に使用されるもの（同日に同法第十三条の規定により厚生年金保険の被保険者の資格を取得する者を除く。）は、同日に、厚生年金保険の被保険者の資格を取得する。この場合において、同法第十八条の規定による都道府県知事の確認を要しない。
<sup>suppl-3601-34/art-42/par-1 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3601-34/art-42/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-42/par-1</sup>
A person who was born on or after April 2, 1921, and who, on the day preceding the Effective Date, was an insured under Mariners Insurance pursuant to the provisions of Article 17 of the former Mariners Insurance Act, and who, on the Effective Date, is employed on a ship prescribed in Article 6, paragraph (1), item (iii) of the new Employees' Pension Insurance Act (excluding a person who acquires the status of an insured covered by employees' pension insurance on that day pursuant to the provisions of Article 13 of that Act), acquires the status of an insured covered by employees' pension insurance on that day. In this case, confirmation by the prefectural governor under the provisions of Article 18 of that Act is not required.
<sup>machine translation, not official</sup>

**第二項**  大正十年四月一日以前に生まれた者であつて、施行日の前日において旧厚生年金保険法第九条又は第十条第一項の規定による厚生年金保険の被保険者であつたものは、施行日に、当該被保険者の資格を喪失する。
<sup>suppl-3601-34/art-42/par-2 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3601-34/art-42/par-2 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-42/par-2</sup>
A person who was born on or before April 1, 1921, and who, on the day preceding the Effective Date, was an insured covered by employees' pension insurance pursuant to the provisions of Article 9 or Article 10, paragraph (1) of the former Employees' Pension Insurance Act, loses the status of that insured on the Effective Date.
<sup>machine translation, not official</sup>

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## Cites
- suppl-3601-34/art-42/par-1: 新厚生年金保険法第六条第一項第三号 → 厚生年金保険法 第六条第一項第三号 (Article 6, paragraph (1), item (iii)), art-6/par-1/item-3 — https://japanlaw.org/ja/employees-pension-insurance-act/art-6/par-1/item-3 · https://japanlaw.org/l/329AC0000000115/art-6/par-1/item-3
- suppl-3601-34/art-42/par-1: 同法第十三条 → 厚生年金保険法 第十三条 (Article 13), art-13 — https://japanlaw.org/ja/employees-pension-insurance-act/art-13 · https://japanlaw.org/l/329AC0000000115/art-13
- suppl-3601-34/art-42/par-1: 同法第十八条 → 厚生年金保険法 第十八条 (Article 18), art-18 — https://japanlaw.org/ja/employees-pension-insurance-act/art-18 · https://japanlaw.org/l/329AC0000000115/art-18

## Cited by

1 provision cites this one. No official source publishes this direction.

- 厚生年金保険法 附則第四十三条第二項第二号（第四種被保険者に関する経過措置） — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3601-34/art-43/par-2/item-2 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-43/par-2/item-2

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 厚生年金保険法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/329AC0000000115/20261001_507AC0000000074), retrieved 2026-10-13
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Employees' Pension Insurance Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3554/tb), retrieved 2026-10-13
- claude-sonnet-5-5 — Machine translation, batch employees-pension-insurance-act-20261013T074650-029, translated 2026-10-13
- This site's parser, version 190 — 厚生年金保険法 — structure, counts, cross-references and defined terms, computed 2026-10-13
