# 社会保険労務士法 / Act on Public Consultants on Social and Labour Insurance — 第二十五条の十八 (Article 25-18)

- Law: 社会保険労務士法 (Act on Public Consultants on Social and Labour Insurance), 昭和四十三年法律第八十九号
- English title "Act on Public Consultants on Social and Labour Insurance": Ministry of Justice translation database, which lists the title
- 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: 第二十五条の十八 (Article 25-18)（社員の競業の禁止） — address `art-25-18`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/labor-and-social-security-attorney-act/art-25-18
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/343AC1000000089/art-25-18
- 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.

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### 第二十五条の十八（社員の競業の禁止） — Prohibition of Competition by Members
<sup>caption: machine translation, not official</sup>
<sup>art-25-18 · https://japanlaw.org/ja/labor-and-social-security-attorney-act/art-25-18 · https://japanlaw.org/l/343AC1000000089/art-25-18</sup>

**第一項**  社会保険労務士法人の社員は、自己若しくは第三者のためにその社会保険労務士法人の業務の範囲に属する業務を行い、又は他の社会保険労務士法人の社員となつてはならない。
<sup>art-25-18/par-1 · https://japanlaw.org/ja/labor-and-social-security-attorney-act/art-25-18/par-1 · https://japanlaw.org/l/343AC1000000089/art-25-18/par-1</sup>
A member of a labor and social security attorney corporation must not engage, for the member or a third party, in business falling within the scope of the business of that labor and social security attorney corporation, or become a member of another labor and social security attorney corporation.
<sup>machine translation, not official</sup>

**第二項**  社会保険労務士法人の社員が前項の規定に違反して自己又は第三者のためにその社会保険労務士法人の業務の範囲に属する業務を行つたときは、当該業務によつて当該社員又は第三者が得た利益の額は、社会保険労務士法人に生じた損害の額と推定する。
<sup>art-25-18/par-2 · https://japanlaw.org/ja/labor-and-social-security-attorney-act/art-25-18/par-2 · https://japanlaw.org/l/343AC1000000089/art-25-18/par-2</sup>
When a member of a labor and social security attorney corporation has, in violation of the preceding paragraph, engaged for the member or a third party in business falling within the scope of the business of that labor and social security attorney corporation, the amount of profit obtained by that member or third party through that business is presumed to be the amount of damage incurred by the labor and social security attorney corporation.
<sup>machine translation, not official</sup>

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## Cites
- art-25-18/par-2: 前項 → 社会保険労務士法 第二十五条の十八第一項 (Article 25-18, paragraph (1)), art-25-18/par-1 — https://japanlaw.org/ja/labor-and-social-security-attorney-act/art-25-18/par-1 · https://japanlaw.org/l/343AC1000000089/art-25-18/par-1

## Cited by

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

- 社会保険労務士法 第二十五条の十八第二項（社員の競業の禁止） — https://japanlaw.org/ja/labor-and-social-security-attorney-act/art-25-18/par-2 · https://japanlaw.org/l/343AC1000000089/art-25-18/par-2
- 社会保険労務士法 第二十五条の二十五第一項（一般社団法人及び一般財団法人に関する法律及び会社法の準用等） — https://japanlaw.org/ja/labor-and-social-security-attorney-act/art-25-25/par-1 · https://japanlaw.org/l/343AC1000000089/art-25-25/par-1

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 社会保険労務士法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/343AC1000000089/20261001_507AC0000000063), retrieved 2026-10-18
- Japanese Law Translation Database System, Ministry of Justice (法務省) — 社会保険労務士法 — its English title as the Ministry of Justice's translation database lists it (https://www.japaneselawtranslation.go.jp/en/laws/view/903), retrieved 2026-09-18
- claude-sonnet-5-5 — Machine translation, batch labor-and-social-security-attorney-act-20261018T204223-010, translated 2026-10-19
- This site's parser, version 209 — 社会保険労務士法 — structure, counts, cross-references and defined terms, computed 2026-10-18
