# 厚生年金保険法 / Employees' Pension Insurance Act — 第二十条 (Supplementary Provisions, Article 20) - 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: 第二十条 (Supplementary Provisions, Article 20)（厚生年金保険の産前産後休業期間中の被保険者及び加入員の特例に関する経過措置） — address `suppl-4241-62/art-20` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-62/art-20 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/329AC0000000115/suppl-4241-62/art-20 - 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. --- ### 第二十条（厚生年金保険の産前産後休業期間中の被保険者及び加入員の特例に関する経過措置） — Transitional Measures concerning Special Provisions on Insureds and Members during the Period of Insured's Maternity Leave under Employees' Pension Insurance caption: machine translation, not official suppl-4241-62/art-20 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-62/art-20 · https://japanlaw.org/l/329AC0000000115/suppl-4241-62/art-20 **第一項** 第四号施行日前に産前産後休業に相当する休業を開始した者については、第四号施行日をその産前産後休業を開始した日とみなして、厚生年金保険法第八十一条の二の二又は公的年金制度の健全性及び信頼性の確保のための厚生年金保険法等の一部を改正する法律（平成二十五年法律第六十三号）附則第五条第一項の規定によりなおその効力を有するものとされた同法第一条の規定による改正前の厚生年金保険法第百三十九条第九項若しくは第百四十条第十項の規定を適用する。 suppl-4241-62/art-20/par-1 · https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-62/art-20/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-62/art-20/par-1 With regard to a person who began leave equivalent to insured's maternity leave before the item (iv) Effective Date, Article 81-2-2 of the Employees' Pension Insurance Act, or Article 139, paragraph (9) or Article 140, paragraph (10) of the Employees' Pension Insurance Act before amendment by the provisions of Article 1 of the Act Partially Amending the Employees' Pension Insurance Act, etc. for Ensuring the Soundness and Reliability of the Public Pension System (Act No. 63 of 2013), which remain in force pursuant to the provisions of Article 5, paragraph (1) of the Supplementary Provisions of that Act, is applied by deeming the item (iv) Effective Date to be the day on which the person began the insured's maternity leave. machine translation, not official --- ## Cites - suppl-4241-62/art-20/par-1: 厚生年金保険法第八十一条の二の二 → 厚生年金保険法 第八十一条の二の二 (Article 81-2-2), art-81-2-2 — https://japanlaw.org/en/employees-pension-insurance-act/art-81-2-2 · https://japanlaw.org/l/329AC0000000115/art-81-2-2 - suppl-4241-62/art-20/par-1: 公的年金制度の健全性及び信頼性の確保のための厚生年金保険法等の一部を改正する法律（平成二十五年法律第六十三号）附則第五条第一項 → 厚生年金保険法 附則第五条第一項 (Supplementary Provisions, Article 5, paragraph (1)), suppl-4251-63/art-5/par-1 — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4251-63/art-5/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4251-63/art-5/par-1 ## Cited by 2 provisions cite this one. No official source publishes this direction. - 厚生年金保険法 附則第一条第一項第四号（施行期日） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-62/art-1/par-1/item-4 · https://japanlaw.org/l/329AC0000000115/suppl-4241-62/art-1/par-1/item-4 - 厚生年金保険法 附則第十八条第一項（厚生年金保険の産前産後休業を終了した際の改定に関する経過措置） — https://japanlaw.org/en/employees-pension-insurance-act/suppl-4241-62/art-18/par-1 · https://japanlaw.org/l/329AC0000000115/suppl-4241-62/art-18/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-20261013T074650-070, 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