# 厚生年金保険法 / Employees' Pension Insurance Act — 第五十二条 (Supplementary Provisions, Article 52) - 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: 第五十二条 (Supplementary Provisions, Article 52)（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） — address `suppl-3601-34/art-52` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52 - 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. --- ### 第五十二条（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） — Transitional Measures Concerning Calculation of the Average Standardized Monthly Amount of Remuneration under Employees' Pension Insurance caption: machine translation, not official suppl-3601-34/art-52 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52 **第一項** 厚生年金保険の被保険者であつた期間の一部が、附則第四十七条第二項に規定する第三種被保険者であつた期間（同条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期間を含む。以下この条において「旧第三種被保険者等であつた期間」という。）若しくは同条第四項に規定する第三種被保険者等であつた期間（以下この条において「第三種被保険者等であつた期間」という。）又は平成八年改正法附則第五条第二項若しくは平成二十四年一元化法附則第七条第二項に規定する旧船員組合員であつた期間（以下この条において「旧船員組合員であつた期間」という。）若しくは平成八年改正法附則第五条第三項若しくは平成二十四年一元化法附則第七条第三項に規定する新船員組合員であつた期間（以下この条において「新船員組合員であつた期間」という。）であるときは、国民年金法等の一部を改正する法律（平成十二年法律第十八号。以下「平成十二年改正法」という。）附則第二十条第一項第一号に定める額は、同号の規定にかかわらず、次の各号に掲げる額を合算した額とする。ただし、老齢厚生年金及び遺族厚生年金（厚生年金保険法第五十八条第一項第四号に該当することにより支給されるものに限る。）の額を計算する場合においてその計算の基礎となる厚生年金保険の被保険者期間の月数が二百四十未満であるとき（附則第十二条第一項第四号から第七号までのいずれかに該当するときを除く。）、障害厚生年金の額を計算する場合において同法第五十条第一項後段の規定の適用があるとき又は遺族厚生年金（同法第五十八条第一項第四号に該当することにより支給されるものを除く。）の額を計算する場合において同法第六十条第一項第一号ただし書の規定の適用があるときは、この限りでない。 suppl-3601-34/art-52/par-1 · 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 If a part of the period during which a person was an insured covered by employees' pension insurance is a period during which the person was a class 3 insured person prescribed in Article 47, paragraph (2) of the Supplementary Provisions (including a period deemed to be a category I EPI insured period pursuant to the provisions of paragraph (1) of that Article; hereinafter in this Article referred to as the "period as a former class 3 insured person, etc."), a period as a class 3 insured person, etc. prescribed in paragraph (4) of that Article (hereinafter in this Article referred to as the "period as a class 3 insured person, etc."), a period as a former mariner member prescribed in Article 5, paragraph (2) of the Supplementary Provisions of the 1996 Amendment Act or Article 7, paragraph (2) of the Supplementary Provisions of the 2012 Pension Unification Act (hereinafter in this Article referred to as the "period as a former mariner member"), or a period as a new mariner member prescribed in Article 5, paragraph (3) of the Supplementary Provisions of the 1996 Amendment Act or Article 7, paragraph (3) of the Supplementary Provisions of the 2012 Pension Unification Act (hereinafter in this Article referred to as the "period as a new mariner member"), the amount specified in Article 20, paragraph (1), item (i) of the Supplementary Provisions of the Act Partially Amending the National Pension Act, etc. (Act No. 18 of 2000; hereinafter referred to as the "2000 Amendment Act") is, notwithstanding the provisions of that item, the sum of the amounts listed in the following items; provided, however, that this does not apply where, in calculating the amount of an employees' old-age pension or an employees' pension for surviving family (limited to one paid by reason of falling under Article 58, paragraph (1), item (iv) of the Employees' Pension Insurance Act), the number of months of the insured period covered by employees' pension insurance forming the basis of the calculation is less than 240 (excluding the case of falling under any of Article 12, paragraph (1), items (iv) through (vii) of the Supplementary Provisions), where the provisions of the second sentence of Article 50, paragraph (1) of the Employees' Pension Insurance Act apply in calculating the amount of an employees' disability pension, or where the proviso to Article 60, paragraph (1), item (i) of the Employees' Pension Insurance Act applies in calculating the amount of an employees' pension for surviving family (excluding one paid by reason of falling under Article 58, paragraph (1), item (iv) of the Employees' Pension Insurance Act): machine translation, not official **一** 旧第三種被保険者等であつた期間及び旧船員組合員であつた期間（以下この号及び第三号において「旧第三種被保険者等であつた期間等」という。）の平成十二年改正法第六条の規定による改正前の厚生年金保険法第四十三条第一項に規定する平均標準報酬月額（当該期間が厚生年金保険法及び船員保険法の一部を改正する法律（昭和四十四年法律第七十八号）附則第四条の規定に該当するものである場合にあつては、同条の規定により計算した平均標準報酬月額とし、厚生年金保険法等の一部を改正する法律（昭和五十一年法律第六十三号）附則第三十五条の規定に該当するものである場合にあつては、同条の規定により計算した平均標準報酬月額とする。第三号において同じ。）の千分の七・一二五に相当する額に旧第三種被保険者等であつた期間等に係る厚生年金保険の被保険者期間の月数を乗じて得た額 suppl-3601-34/art-52/par-1/item-1 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-1 the amount obtained by multiplying the amount equivalent to 7.125/1,000 of the average standardized monthly amount of remuneration prescribed in Article 43, paragraph (1) of the Employees' Pension Insurance Act prior to amendment by the provisions of Article 6 of the 2000 Amendment Act for the period as a former class 3 insured person, etc. and the period as a former mariner member (hereinafter in this item and item (iii) referred to as the "periods as a former class 3 insured person, etc., or as a former mariner member") (in the case where that period falls under the provisions of Article 4 of the Supplementary Provisions of the Act Partially Amending the Employees' Pension Insurance Act and the Mariners Insurance Act (Act No. 78 of 1969), the average standardized monthly amount of remuneration calculated pursuant to the provisions of that Article, and in the case where it falls under the provisions of Article 35 of the Supplementary Provisions of the Act Partially Amending the Employees' Pension Insurance Act, etc. (Act No. 63 of 1976), the average standardized monthly amount of remuneration calculated pursuant to the provisions of that Article; the same applies in item (iii)) by the number of months of the insured period covered by employees' pension insurance pertaining to the periods as a former class 3 insured person, etc., or as a former mariner member; machine translation, not official **二** 第三種被保険者等であつた期間及び新船員組合員であつた期間（以下この号及び次号において「第三種被保険者等であつた期間等」という。）の平均標準報酬月額の千分の七・一二五に相当する額に第三種被保険者等であつた期間等に係る厚生年金保険の被保険者期間の月数を乗じて得た額 suppl-3601-34/art-52/par-1/item-2 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1/item-2 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-2 the amount obtained by multiplying the amount equivalent to 7.125/1,000 of the average standardized monthly amount of remuneration for the period as a class 3 insured person, etc. and the period as a new mariner member (hereinafter in this item and the following item referred to as the "periods as a class 3 insured person, etc., or as a new mariner member") by the number of months of the insured period covered by employees' pension insurance pertaining to the periods as a class 3 insured person, etc., or as a new mariner member; machine translation, not official **三** 旧第三種被保険者等であつた期間等及び第三種被保険者等であつた期間等以外の厚生年金保険の被保険者であつた期間の平均標準報酬月額の千分の七・一二五に相当する額に旧第三種被保険者等であつた期間等及び第三種被保険者等であつた期間等以外の期間に係る厚生年金保険の被保険者期間の月数を乗じて得た額 suppl-3601-34/art-52/par-1/item-3 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1/item-3 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-3 the amount obtained by multiplying the amount equivalent to 7.125/1,000 of the average standardized monthly amount of remuneration for the period during which the person was an insured covered by employees' pension insurance, other than the periods as a former class 3 insured person, etc., or as a former mariner member and the periods as a class 3 insured person, etc., or as a new mariner member, by the number of months of the insured period covered by employees' pension insurance pertaining to the periods other than the periods as a former class 3 insured person, etc., or as a former mariner member and the periods as a class 3 insured person, etc., or as a new mariner member. machine translation, not official --- ## Cites - suppl-3601-34/art-52/par-1: 附則第四十七条第二項 → 厚生年金保険法 附則第四十七条第二項 (Supplementary Provisions, Article 47, paragraph (2)), suppl-3601-34/art-47/par-2 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-47/par-2 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-47/par-2 - suppl-3601-34/art-52/par-1: 同条第一項 → 厚生年金保険法 附則第四十七条第一項 (Supplementary Provisions, Article 47, paragraph (1)), suppl-3601-34/art-47/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-47/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-47/par-1 - suppl-3601-34/art-52/par-1: この条 → 厚生年金保険法 附則第五十二条 (Supplementary Provisions, Article 52), suppl-3601-34/art-52 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52 - suppl-3601-34/art-52/par-1: 同条第四項 → 厚生年金保険法 附則第四十七条第四項 (Supplementary Provisions, Article 47, paragraph (4)), suppl-3601-34/art-47/par-4 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-47/par-4 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-47/par-4 - suppl-3601-34/art-52/par-1: 平成八年改正法附則第五条第二項 → 厚生年金保険法 附則第五条第二項 (Supplementary Provisions, Article 5, paragraph (2)), 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 - suppl-3601-34/art-52/par-1: 平成二十四年一元化法附則第七条第二項 → 厚生年金保険法 附則第七条第二項 (Supplementary Provisions, Article 7, paragraph (2)), suppl-4241-63/art-7/par-2 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-63/art-7/par-2 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-7/par-2 - suppl-3601-34/art-52/par-1: 平成八年改正法附則第五条第三項 → 厚生年金保険法 附則第五条第三項 (Supplementary Provisions, Article 5, paragraph (3)), 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 - suppl-3601-34/art-52/par-1: 平成二十四年一元化法附則第七条第三項 → 厚生年金保険法 附則第七条第三項 (Supplementary Provisions, Article 7, paragraph (3)), suppl-4241-63/art-7/par-3 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-63/art-7/par-3 · https://japanlaw.org/l/329AC0000000115/suppl-4241-63/art-7/par-3 - suppl-3601-34/art-52/par-1: 国民年金法等の一部を改正する法律（平成十二年法律第十八号。以下「平成十二年改正法」という。）附則第二十条第一項第一号 → 厚生年金保険法 附則第二十条第一項第一号 (Supplementary Provisions, Article 20, paragraph (1), item (i)), suppl-4121-18/art-20/par-1/item-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4121-18/art-20/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/suppl-4121-18/art-20/par-1/item-1 - suppl-3601-34/art-52/par-1: 厚生年金保険法第五十八条第一項第四号 → 厚生年金保険法 第五十八条第一項第四号 (Article 58, paragraph (1), item (iv)), art-58/par-1/item-4 — https://japanlaw.org/en/employees-pension-insurance-act/art-58/par-1/item-4 · https://japanlaw.org/l/329AC0000000115/art-58/par-1/item-4 - suppl-3601-34/art-52/par-1: 同法第五十条第一項 → 厚生年金保険法 第五十条第一項 (Article 50, paragraph (1)), art-50/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/art-50/par-1 · https://japanlaw.org/l/329AC0000000115/art-50/par-1 - suppl-3601-34/art-52/par-1: 同法第六十条第一項第一号 → 厚生年金保険法 第六十条第一項第一号 (Article 60, paragraph (1), item (i)), art-60/par-1/item-1 — https://japanlaw.org/en/employees-pension-insurance-act/art-60/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/art-60/par-1/item-1 - suppl-3601-34/art-52/par-1/item-1: この号 → 厚生年金保険法 附則第五十二条第一項第一号 (Supplementary Provisions, Article 52, paragraph (1), item (i)), suppl-3601-34/art-52/par-1/item-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-1 - suppl-3601-34/art-52/par-1/item-1: 第三号 → 厚生年金保険法 附則第五十二条第一項第三号 (Supplementary Provisions, Article 52, paragraph (1), item (iii)), suppl-3601-34/art-52/par-1/item-3 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1/item-3 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-3 - suppl-3601-34/art-52/par-1/item-1: 当該期間が厚生年金保険法及び船員保険法の一部を改正する法律（昭和四十四年法律第七十八号）附則第四条 → 厚生年金保険法 附則第四条 (Supplementary Provisions, Article 4), suppl-3441-78/art-4 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3441-78/art-4 · https://japanlaw.org/l/329AC0000000115/suppl-3441-78/art-4 - suppl-3601-34/art-52/par-1/item-1: 厚生年金保険法等の一部を改正する法律（昭和五十一年法律第六十三号）附則第三十五条 → 厚生年金保険法 附則第三十五条 (Supplementary Provisions, Article 35), suppl-3511-63/art-35 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3511-63/art-35 · https://japanlaw.org/l/329AC0000000115/suppl-3511-63/art-35 - suppl-3601-34/art-52/par-1/item-2: この号 → 厚生年金保険法 附則第五十二条第一項第二号 (Supplementary Provisions, Article 52, paragraph (1), item (ii)), suppl-3601-34/art-52/par-1/item-2 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1/item-2 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-2 - suppl-3601-34/art-52/par-1/item-2: 次号 → 厚生年金保険法 附則第五十二条第一項第三号 (Supplementary Provisions, Article 52, paragraph (1), item (iii)), suppl-3601-34/art-52/par-1/item-3 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-52/par-1/item-3 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-3 ## Cited by 4 provisions cite this one. No official source publishes this direction. - 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 附則第五十二条第一項第一号（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/item-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-1 - 厚生年金保険法 附則第五十二条第一項第二号（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/item-2 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-52/par-1/item-2 - 厚生年金保険法 附則第七十九条第一項第一号（厚生年金保険事業に要する費用の負担の特例） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-3601-34/art-79/par-1/item-1 · https://japanlaw.org/l/329AC0000000115/suppl-3601-34/art-79/par-1/item-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-20261013T074650-031, 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