# 厚生年金保険法 / Employees' Pension Insurance Act — 第二十一条 (Supplementary Provisions, Article 21) - 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: 第二十一条 (Supplementary Provisions, Article 21)（老齢厚生年金に係る加給年金額等の特例） — address `suppl-4241-63/art-21` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-63/art-21 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-21 - 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. --- ### 第二十一条（老齢厚生年金に係る加給年金額等の特例） — Special Provisions on Additional Pension Amounts, etc. for Employees' Old-Age Pensions caption: machine translation, not official suppl-4241-63/art-21 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-63/art-21 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-21 **第一項** 施行日の前日において附則第十一条第一項各号に掲げる年金たる給付の受給権を有していた者（当該年金たる給付の額の計算の基礎となる期間の月数が二百四十に満たない者に限る。）であって、施行日以後に老齢厚生年金の受給権を取得したものについて、厚生年金保険法第四十四条及び第六十二条の規定その他の法令の規定でこれらの規定に相当するものとして政令で定めるものを適用する場合においては、同法第四十四条第一項中「被保険者期間の月数が二百四十以上」とあるのは「被保険者期間（被用者年金制度の一元化等を図るための厚生年金保険法等の一部を改正する法律（平成二十四年法律第六十三号。以下「平成二十四年一元化法」という。）附則第七条第一項の規定により被保険者期間とみなされた旧国家公務員共済組合員期間（他の法令の規定により当該旧国家公務員共済組合員期間に算入された期間を含む。）、旧地方公務員共済組合員期間（他の法令の規定により当該旧地方公務員共済組合員期間に算入された期間を含む。）又は旧私立学校教職員共済加入者期間と当該老齢厚生年金の額の計算の基礎となる被保険者期間とを合算して得た被保険者期間とする。以下この項において同じ。）の月数が二百四十以上」と、同法第六十二条第一項中「被保険者期間」とあるのは「被保険者期間（平成二十四年一元化法附則第七条第一項の規定により被保険者期間とみなされた旧国家公務員共済組合員期間（他の法令の規定により当該旧国家公務員共済組合員期間に算入された期間を含む。）、旧地方公務員共済組合員期間（他の法令の規定により当該旧地方公務員共済組合員期間に算入された期間を含む。）又は旧私立学校教職員共済加入者期間と当該遺族厚生年金の額の計算の基礎となる被保険者期間とを合算して得た被保険者期間とする。）」とするほか、これらの規定の適用に関し必要な読替えその他必要な事項は、政令で定める。 suppl-4241-63/art-21/par-1 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-63/art-21/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-21/par-1 In the case of applying the provisions of Articles 44 and 62 of the Employees' Pension Insurance Act and other provisions of laws and regulations specified by Cabinet Order as corresponding to those provisions to a person who, on the day preceding the Effective Date, had the right to receive a benefit in the form of a pension set forth in the items of Article 11, paragraph (1) of the Supplementary Provisions (limited to a person for whom the number of months of the period forming the basis for calculating the amount of that benefit in the form of a pension is less than 240) and who has acquired the right to receive an employees' old-age pension on or after the Effective Date, the phrase "an insured period of 240 months or more" in Article 44, paragraph (1) of that Act is deemed to be replaced with "an insured period (meaning the insured period obtained by adding together the former National Public Servants Mutual Aid Association member period deemed to be an insured period pursuant to the provisions of Article 7, paragraph (1) of the Supplementary Provisions of the Act Partially Amending the Employees' Pension Insurance Act, etc. to Unify, etc. the Employees' Pension Systems (Act No. 63 of 2012; hereinafter referred to as the "2012 Pension Unification Act") (including a period counted into that former National Public Servants Mutual Aid Association member period pursuant to the provisions of other laws and regulations), former Local Public Servants Mutual Aid Association member period (including a period counted into that former Local Public Servants Mutual Aid Association member period pursuant to the provisions of other laws and regulations) or former Private School Personnel Mutual Aid participant period and the insured period forming the basis for calculating the amount of that employees' old-age pension; the same applies hereinafter in this paragraph) of 240 months or more", and the phrase "insured period" in Article 62, paragraph (1) of that Act is deemed to be replaced with "insured period (meaning the insured period obtained by adding together the former National Public Servants Mutual Aid Association member period deemed to be an insured period pursuant to the provisions of Article 7, paragraph (1) of the Supplementary Provisions of the 2012 Pension Unification Act (including a period counted into that former National Public Servants Mutual Aid Association member period pursuant to the provisions of other laws and regulations), former Local Public Servants Mutual Aid Association member period (including a period counted into that former Local Public Servants Mutual Aid Association member period pursuant to the provisions of other laws and regulations) or former Private School Personnel Mutual Aid participant period and the insured period forming the basis for calculating the amount of that employees' pension for surviving family)"; in addition, the technical replacement of terms necessary for the application of these provisions and other necessary matters are specified by Cabinet Order. machine translation, not official --- ## Cites - suppl-4241-63/art-21/par-1: 附則第十一条第一項 → 厚生年金保険法 附則第十一条第一項 (Supplementary Provisions, Article 11, paragraph (1)), suppl-4241-63/art-11/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-63/art-11/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-11/par-1 - suppl-4241-63/art-21/par-1: 厚生年金保険法第四十四条 → 厚生年金保険法 第四十四条 (Article 44), art-44 — https://japanlaw.org/en/employees-pension-insurance-act/art-44 · https://japanlaw.org/l/329AC0000000115/art-44 - suppl-4241-63/art-21/par-1: 第六十二条 → 厚生年金保険法 第六十二条 (Article 62), art-62 — https://japanlaw.org/en/employees-pension-insurance-act/art-62 · https://japanlaw.org/l/329AC0000000115/art-62 - suppl-4241-63/art-21/par-1: 同法第四十四条第一項 → 厚生年金保険法 第四十四条第一項 (Article 44, paragraph (1)), art-44/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/art-44/par-1 · https://japanlaw.org/l/329AC0000000115/art-44/par-1 - suppl-4241-63/art-21/par-1: 被用者年金制度の一元化等を図るための厚生年金保険法等の一部を改正する法律（平成二十四年法律第六十三号。以下「平成二十四年一元化法」という。）附則第七条第一項 → 厚生年金保険法 附則第七条第一項 (Supplementary Provisions, Article 7, paragraph (1)), suppl-4241-63/art-7/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-63/art-7/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-7/par-1 - suppl-4241-63/art-21/par-1: 同法第六十二条第一項 → 厚生年金保険法 第六十二条第一項 (Article 62, paragraph (1)), art-62/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/art-62/par-1 · https://japanlaw.org/l/329AC0000000115/art-62/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-20261013T074650-073, translated 2026-10-13 - claude-sonnet-5-5 — Machine translation, batch employees-pension-insurance-act-20261013T074650-074, 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