# 健康保険法 / Health Insurance Act — 第百五十七条 (Article 157)

- Law: 健康保険法 (Health Insurance Act), 大正十一年法律第七十号
- English title "Health 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: 第百五十七条 (Article 157)（任意継続被保険者の保険料） — address `art-157`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/en/health-insurance-act/art-157
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/211AC0000000070/art-157
- 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.

---

### 第百五十七条（任意継続被保険者の保険料） — (Insurance Premiums of Insured Persons with Optional and Continued Coverage)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-157 · https://japanlaw.org/en/health-insurance-act/art-157 · https://japanlaw.org/l/211AC0000000070/art-157</sup>

**第一項**  任意継続被保険者に関する保険料は、任意継続被保険者となった月から算定する。
<sup>art-157/par-1 · https://japanlaw.org/en/health-insurance-act/art-157/par-1 · https://japanlaw.org/l/211AC0000000070/art-157/par-1</sup>
Insurance premiums related to an insured person with optional and continued coverage are calculated starting from the month in which the person became an insured person with optional and continued coverage.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第二項**  前項の場合において、各月の保険料の算定方法は、前条の例による。
<sup>art-157/par-2 · https://japanlaw.org/en/health-insurance-act/art-157/par-2 · https://japanlaw.org/l/211AC0000000070/art-157/par-2</sup>
In the case of the preceding paragraph, the method for calculating monthly insurance premiums is governed by the preceding Article.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

---

## Cites
- art-157/par-2: 前項 → 健康保険法 第百五十七条第一項 (Article 157, paragraph (1)), art-157/par-1 — https://japanlaw.org/en/health-insurance-act/art-157/par-1 · https://japanlaw.org/l/211AC0000000070/art-157/par-1
- art-157/par-2: 前条 → 健康保険法 第百五十六条 (Article 156), art-156 — https://japanlaw.org/en/health-insurance-act/art-156 · https://japanlaw.org/l/211AC0000000070/art-156

## Cited by

3 provisions cite this one. No official source publishes this direction.

- 健康保険法 第百五十七条第二項（任意継続被保険者の保険料） — https://japanlaw.org/en/health-insurance-act/art-157/par-2 · https://japanlaw.org/l/211AC0000000070/art-157/par-2
- 健康保険法 附則第七条第一項（特定被保険者） — https://japanlaw.org/en/health-insurance-act/suppl-2111-70/art-7/par-1 · https://japanlaw.org/l/211AC0000000070/suppl-2111-70/art-7/par-1
- 健康保険法 附則第八条第一項（承認健康保険組合） — https://japanlaw.org/en/health-insurance-act/suppl-2111-70/art-8/par-1 · https://japanlaw.org/l/211AC0000000070/suppl-2111-70/art-8/par-1

---

## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 健康保険法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/211AC0000000070/20261001_507AC0000000087), retrieved 2026-10-10
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Health Insurance Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3266/tb), retrieved 2026-10-10
- This site's parser, version 189 — 健康保険法 — structure, counts, cross-references and defined terms, computed 2026-10-10
