# 厚生年金保険法 / Employees' Pension Insurance Act — 第四条 (Supplementary Provisions, Article 4) - 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: 第四条 (Supplementary Provisions, Article 4)（用語の定義） — address `suppl-4241-63/art-4` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/329AC0000000115/suppl-4241-63/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. --- ### 第四条（用語の定義） — Definitions of Terms caption: machine translation, not official suppl-4241-63/art-4 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4 **第一項** この条から附則第八十条までの規定において、次の各号に掲げる用語の意義は、それぞれ当該各号に定めるところによる。 suppl-4241-63/art-4/par-1 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1 In the provisions of this Article through Article 80 of the Supplementary Provisions, the meanings of the terms set forth in the following items are as prescribed in those items: machine translation, not official **一** 改正前厚生年金保険法　第一条の規定による改正前の厚生年金保険法をいう。 suppl-4241-63/art-4/par-1/item-1 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-1 pre-amendment Employees' Pension Insurance Act: means the Employees' Pension Insurance Act before the revision by the provisions of Article 1; machine translation, not official **二** 旧厚生年金保険法　国民年金法等の一部を改正する法律（昭和六十年法律第三十四号。以下附則第七十五条までにおいて「昭和六十年国民年金等改正法」という。）第三条の規定による改正前の厚生年金保険法をいう。 suppl-4241-63/art-4/par-1/item-2 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-2 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-2 Former Employees' Pension Insurance Act: means the Employees' Pension Insurance Act before the revision by the provisions of Article 3 of the Act Partially Amending the National Pension Act, etc. (Act No. 34 of 1985; hereinafter referred to as the "1985 National Pension Amendment Act" in the provisions through Article 75 of the Supplementary Provisions); machine translation, not official **三** 改正前国共済法　第二条の規定による改正前の国家公務員共済組合法をいう。 suppl-4241-63/art-4/par-1/item-3 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-3 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-3 pre-amendment National Public Officers Mutual Aid Association Act: means the National Public Officers Mutual Aid Association Act before the revision by the provisions of Article 2; machine translation, not official **四** 改正前国共済施行法　附則第九十七条の規定による改正前の国家公務員共済組合法の長期給付に関する施行法（昭和三十三年法律第百二十九号）をいう。 suppl-4241-63/art-4/par-1/item-4 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-4 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-4 pre-amendment National Public Officers Mutual Aid Enforcement Act: means the Act for Enforcement in Relation to Long-term Benefit under the National Public Officers Mutual Aid Association Act (Act No. 129 of 1958) before the revision by the provisions of Article 97 of the Supplementary Provisions; machine translation, not official **五** 旧国共済法　国家公務員等共済組合法等の一部を改正する法律（昭和六十年法律第百五号。以下附則第四十九条までにおいて「昭和六十年国共済改正法」という。）第一条の規定による改正前の国家公務員等共済組合法をいう。 suppl-4241-63/art-4/par-1/item-5 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-5 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-5 former National Public Officers Mutual Aid Association Act: means the National Public Officers, etc. Mutual Aid Association Act before the revision by the provisions of Article 1 of the Act Partially Amending the National Public Officers, etc. Mutual Aid Association Act, etc. (Act No. 105 of 1985; hereinafter referred to as the "1985 National Public Officers Mutual Aid Amendment Act" in the provisions through Article 49 of the Supplementary Provisions); machine translation, not official **六** 改正前地共済法　第三条の規定による改正前の地方公務員等共済組合法をいう。 suppl-4241-63/art-4/par-1/item-6 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-6 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-6 pre-amendment Local Public Officers, etc. Mutual Aid Association Act: means the Local Public Officers, etc. Mutual Aid Association Act before the revision by the provisions of Article 3; machine translation, not official **七** 改正前地共済施行法　附則第百一条の規定による改正前の地方公務員等共済組合法の長期給付等に関する施行法（昭和三十七年法律第百五十三号）をいう。 suppl-4241-63/art-4/par-1/item-7 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-7 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-7 pre-amendment Local Public Officers Mutual Aid Enforcement Act: means the Act for Enforcement in Relation to Long-term Benefit, etc. under the Local Public Officers, etc. Mutual Aid Association Act (Act No. 153 of 1962) before the revision by the provisions of Article 101 of the Supplementary Provisions; machine translation, not official **八** 旧地共済法　地方公務員等共済組合法等の一部を改正する法律（昭和六十年法律第百八号。以下附則第七十五条までにおいて「昭和六十年地共済改正法」という。）第一条の規定による改正前の地方公務員等共済組合法をいう。 suppl-4241-63/art-4/par-1/item-8 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-8 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-8 former Local Public Officers, etc. Mutual Aid Association Act: means the Local Public Officers, etc. Mutual Aid Association Act before the revision by the provisions of Article 1 of the Act Partially Amending the Local Public Officers, etc. Mutual Aid Association Act, etc. (Act No. 108 of 1985; hereinafter referred to as the "1985 Local Public Officers Mutual Aid Amendment Act" in the provisions through Article 75 of the Supplementary Provisions); machine translation, not official **九** 改正前私学共済法　第四条の規定による改正前の私立学校教職員共済法をいう。 suppl-4241-63/art-4/par-1/item-9 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-9 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-9 pre-amendment Private School Personnel Mutual Aid Association Act: means the Private School Personnel Mutual Aid Association Act before the revision by the provisions of Article 4; machine translation, not official **十** 旧私学共済法　私立学校教職員共済組合法等の一部を改正する法律（昭和六十年法律第百六号。附則第八条第一項において「昭和六十年私学共済改正法」という。）第一条の規定による改正前の私立学校教職員共済組合法をいう。 suppl-4241-63/art-4/par-1/item-10 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-10 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-10 former Private School Personnel Mutual Aid Association Act: means the Private School Personnel Mutual Aid Association Act before the revision by the provisions of Article 1 of the Act Partially Amending the Private School Personnel Mutual Aid Association Act, etc. (Act No. 106 of 1985; referred to as the "1985 Private School Mutual Aid Amendment Act" in Article 8, paragraph (1) of the Supplementary Provisions); machine translation, not official **十一** 旧国家公務員共済組合員期間　国家公務員共済組合の組合員であった者のこの法律の施行の日（以下「施行日」という。）前における当該組合員であった期間（改正前国共済法又は他の法令の規定により当該組合員であった期間とみなされた期間及び他の法令の規定により当該組合員であった期間に合算された期間を含む。）をいう。 suppl-4241-63/art-4/par-1/item-11 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-11 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-11 period of former national public officers mutual aid membership: means the period during which a person who was a member of a National Public Servants Mutual Aid Association was a member before the day on which this Act comes into effect (hereinafter referred to as the "Effective Date") (including a period deemed to be a period during which the person was a member pursuant to the provisions of the pre-amendment National Public Officers Mutual Aid Association Act or other laws and regulations, and a period added to the period during which the person was a member pursuant to the provisions of other laws and regulations); machine translation, not official **十二** 旧地方公務員共済組合員期間　地方公務員共済組合の組合員であった者の施行日前における当該組合員であった期間（改正前地共済法又は他の法令の規定により当該組合員であった期間とみなされた期間及び他の法令の規定により当該組合員であった期間に合算された期間を含む。）をいう。 suppl-4241-63/art-4/par-1/item-12 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-12 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-12 period of former local public officers mutual aid membership: means the period during which a person who was a member of a Local Public Servants Mutual Aid Association was a member before the Effective Date (including a period deemed to be a period during which the person was a member pursuant to the provisions of the pre-amendment Local Public Officers, etc. Mutual Aid Association Act or other laws and regulations, and a period added to the period during which the person was a member pursuant to the provisions of other laws and regulations); machine translation, not official **十三** 旧私立学校教職員共済加入者期間　私立学校教職員共済法の規定による私立学校教職員共済制度の加入者であった者の施行日前における当該加入者であった期間（改正前私学共済法又は他の法令の規定により当該加入者であった期間とみなされた期間を含む。）をいう。 suppl-4241-63/art-4/par-1/item-13 · https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1/item-13 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1/item-13 period of former private school personnel mutual aid membership: means the period during which a person who was a member of the mutual aid system for private school personnel under the provisions of the Private School Personnel Mutual Aid Association Act was a member before the Effective Date (including a period deemed to be a period during which the person was a member pursuant to the provisions of the pre-amendment Private School Personnel Mutual Aid Association Act or other laws and regulations). machine translation, not official --- ## Cites - suppl-4241-63/art-4/par-1: この条 → 厚生年金保険法 附則第四条 (Supplementary Provisions, Article 4), suppl-4241-63/art-4 — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4 - suppl-4241-63/art-4/par-1/item-10: 附則第八条第一項 → 厚生年金保険法 附則第八条第一項 (Supplementary Provisions, Article 8, paragraph (1)), suppl-4241-63/art-8/par-1 — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-8/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-8/par-1 ## Cited by 7 provisions cite this one. No official source publishes this direction. - 厚生年金保険法 附則第十七条の四第五項（平均標準報酬月額の改定） — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3291-115/art-17-4/par-5 · https://japanlaw.org/l/329AC0000000115/suppl-3291-115/art-17-4/par-5 - 厚生年金保険法 附則第十七条の四第六項（平均標準報酬月額の改定） — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3291-115/art-17-4/par-6 · https://japanlaw.org/l/329AC0000000115/suppl-3291-115/art-17-4/par-6 - 厚生年金保険法 附則第十七条の四第七項（平均標準報酬月額の改定） — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-3291-115/art-17-4/par-7 · https://japanlaw.org/l/329AC0000000115/suppl-3291-115/art-17-4/par-7 - 厚生年金保険法 附則第二十一条第九項 — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4121-18/art-21/par-9 · https://japanlaw.org/l/329AC0000000115/suppl-4121-18/art-21/par-9 - 厚生年金保険法 附則第二十一条第十項 — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4121-18/art-21/par-10 · https://japanlaw.org/l/329AC0000000115/suppl-4121-18/art-21/par-10 - 厚生年金保険法 附則第二十一条第十一項 — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4121-18/art-21/par-11 · https://japanlaw.org/l/329AC0000000115/suppl-4121-18/art-21/par-11 - 厚生年金保険法 附則第四条第一項（用語の定義） — https://japanlaw.org/ja/employees-pension-insurance-act/suppl-4241-63/art-4/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-4/par-1 --- ## 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-20261013T074650-071, 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