# 厚生年金保険法 / Employees' Pension Insurance Act — 第五条 (Supplementary Provisions, Article 5) - 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: 第五条 (Supplementary Provisions, Article 5)（厚生年金保険の被保険者期間等に関する経過措置） — address `suppl-4081-82/art-5` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5 - 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. --- ### 第五条（厚生年金保険の被保険者期間等に関する経過措置） — Transitional Measures Concerning Insured Periods, etc. under Employees' Pension Insurance caption: machine translation, not official suppl-4081-82/art-5 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5 **第一項** 旧適用法人共済組合員期間は、厚生年金保険法第二条の五第一項第一号に規定する第一号厚生年金被保険者期間（以下「第一号厚生年金被保険者期間」という。）とみなす。ただし、次に掲げる期間は、この限りでない。 suppl-4081-82/art-5/par-1 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-1 A period of former applicable corporation mutual aid membership is deemed to be a category I EPI insured period prescribed in Article 2-5, paragraph (1), item (i) of the Employees' Pension Insurance Act (hereinafter referred to as a "category I EPI insured period"); provided, however, that this does not apply to the following periods: machine translation, not official **一** 改正前国共済法附則第十三条の十の規定による脱退一時金の支給を受けた場合におけるその脱退一時金の計算の基礎となった期間 suppl-4081-82/art-5/par-1/item-1 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-1/item-1 in the case where the person received payment of a lump-sum withdrawal payment under the provisions of Article 13-10 of the Supplementary Provisions of the pre-amendment National Public Officers Mutual Aid Act, the period that formed the basis for calculating that lump-sum withdrawal payment; machine translation, not official **二** 旧国共済法第八十条第一項の規定による脱退一時金（他の法令の規定により当該脱退一時金とみなされたものを含む。）の支給を受けた場合におけるその脱退一時金の計算の基礎となった期間 suppl-4081-82/art-5/par-1/item-2 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-1/item-2 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-1/item-2 in the case where the person received payment of a lump-sum withdrawal payment under the provisions of Article 80, paragraph (1) of the former National Public Officers Mutual Aid Act (including one deemed to be that lump-sum withdrawal payment pursuant to the provisions of other laws and regulations), the period that formed the basis for calculating that lump-sum withdrawal payment; machine translation, not official **三** 国家公務員及び公共企業体職員に係る共済組合制度の統合等を図るための国家公務員共済組合法等の一部を改正する法律（昭和五十八年法律第八十二号）附則第二条の規定による廃止前の公共企業体職員等共済組合法（昭和三十一年法律第百三十四号）第六十一条の三第一項の規定による脱退一時金の支給を受けた場合におけるその脱退一時金の計算の基礎となった期間 suppl-4081-82/art-5/par-1/item-3 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-1/item-3 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-1/item-3 in the case where the person received payment of a lump-sum withdrawal payment under the provisions of Article 61-3, paragraph (1) of the Public Corporation Employees, etc. Mutual Aid Association Act (Act No. 134 of 1956) prior to its repeal under the provisions of Article 2 of the Supplementary Provisions of the Act Partially Amending the National Public Officers Mutual Aid Association Act, etc. for the Integration, etc. of the Mutual Aid Association Systems for National Public Officers and Public Corporation Employees (Act No. 82 of 1983), the period that formed the basis for calculating that lump-sum withdrawal payment; or machine translation, not official **四** 昭和六十年国共済改正法附則第六十一条の規定による脱退一時金の支給を受けた場合におけるその脱退一時金の計算の基礎となった期間 suppl-4081-82/art-5/par-1/item-4 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-1/item-4 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-1/item-4 in the case where the person received payment of a lump-sum withdrawal payment under the provisions of Article 61 of the Supplementary Provisions of the 1985 National Public Officers Mutual Aid Amendment Act, the period that formed the basis for calculating that lump-sum withdrawal payment. machine translation, not official **第二項** 前項の規定により第一号厚生年金被保険者期間とみなされた旧適用法人共済組合員期間のうち、昭和六十年国共済改正法の施行の日前の昭和六十年国共済改正法附則第三十二条第一項に規定する旧船員組合員であった期間につき厚生年金保険の被保険者期間を計算する場合には、その期間に三分の四を乗じて得た期間をもって厚生年金保険の被保険者期間とする。 suppl-4081-82/art-5/par-2 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-2 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-2 With regard to the period of former applicable corporation mutual aid membership that is deemed to be a category I EPI insured period pursuant to the provisions of the preceding paragraph, when calculating the insured period under employees' pension insurance for the period during which the person was a former mariner member prescribed in Article 32, paragraph (1) of the Supplementary Provisions of the 1985 National Public Officers Mutual Aid Amendment Act before the day on which the 1985 National Public Officers Mutual Aid Amendment Act came into effect, the period obtained by multiplying that period by 4/3 is treated as the insured period under employees' pension insurance. machine translation, not official **第三項** 第一項の規定により第一号厚生年金被保険者期間とみなされた旧適用法人共済組合員期間のうち、昭和六十年国共済改正法の施行の日以後平成三年三月三十一日までの間の昭和六十年国共済改正法附則第三十二条第二項に規定する新船員組合員であった期間につき厚生年金保険の被保険者期間を計算する場合には、その期間に五分の六を乗じて得た期間をもって厚生年金保険の被保険者期間とする。 suppl-4081-82/art-5/par-3 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-3 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-3 With regard to the period of former applicable corporation mutual aid membership that is deemed to be a category I EPI insured period pursuant to the provisions of paragraph (1), when calculating the insured period under employees' pension insurance for the period during which the person was a new mariner member prescribed in Article 32, paragraph (2) of the Supplementary Provisions of the 1985 National Public Officers Mutual Aid Amendment Act, from the day on which the 1985 National Public Officers Mutual Aid Amendment Act came into effect through March 31, 1991, the period obtained by multiplying that period by 6/5 is treated as the insured period under employees' pension insurance. machine translation, not official --- ## Cites - suppl-4081-82/art-5/par-1: 厚生年金保険法第二条の五第一項第一号 → 厚生年金保険法 第二条の五第一項第一号 (Article 2-5, paragraph (1), item (i)), art-2-5/par-1/item-1 — https://japanlaw.org/en/employees-pension-insurance-act/art-2-5/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/art-2-5/par-1/item-1 - suppl-4081-82/art-5/par-2: 前項 → 厚生年金保険法 附則第五条第一項 (Supplementary Provisions, Article 5, paragraph (1)), suppl-4081-82/art-5/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-1 - suppl-4081-82/art-5/par-3: 第一項 → 厚生年金保険法 附則第五条第一項 (Supplementary Provisions, Article 5, paragraph (1)), suppl-4081-82/art-5/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-1 ## Cited by 7 provisions cite this one. No official source publishes this direction. - 厚生年金保険法 附則第四条第一項 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3441-78/art-4/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-3441-78/art-4/par-1 - 厚生年金保険法 附則第三十五条第三項（厚生年金保険法による平均標準報酬月額の計算の特例） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3511-63/art-35/par-3 · https://japanlaw.org/l/329AC0000000115/suppl-3511-63/art-35/par-3 - 厚生年金保険法 附則第六十三条第一項（厚生年金保険法による年金額の計算の特例） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3551-82/art-63/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-3551-82/art-63/par-1 - 厚生年金保険法 附則第五十二条第一項（厚生年金保険の平均標準報酬月額の計算に関する経過措置） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1 - 厚生年金保険法 附則第五十九条第二項第二号イ（老齢厚生年金の額の計算の特例） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-59/par-2/item-2/sub-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-59/par-2/item-2/sub-1 - 厚生年金保険法 附則第五条第二項（厚生年金保険の被保険者期間等に関する経過措置） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-2 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-2 - 厚生年金保険法 附則第五条第三項（厚生年金保険の被保険者期間等に関する経過措置） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4081-82/art-5/par-3 · https://japanlaw.org/l/329AC0000000115/suppl-4081-82/art-5/par-3 --- ## 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-20261013T074650-049, 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