# 遺失物法 / Lost Property Act — 第三十一条 (Article 31)

- Law: 遺失物法 (Lost Property Act), 平成十八年法律第七十三号
- English title "Lost Property Act": 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: 第三十一条 (Article 31)（遺失者の費用償還義務等の免除） — address `art-31`
- Text in force since: 2025-06-01
- URL (the page that opens at this provision): https://japanlaw.org/ja/lost-property-act/art-31
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/418AC0000000073/art-31
- 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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### 第三十一条（遺失者の費用償還義務等の免除） — Exemption of Persons Who Lost from the Obligation to Reimburse Expenses, etc.
<sup>caption: machine translation, not official</sup>
<sup>art-31 · https://japanlaw.org/ja/lost-property-act/art-31 · https://japanlaw.org/l/418AC0000000073/art-31</sup>

**第一項**  遺失者は、物件についてその有する権利を放棄して、第二十七条第一項の費用を償還する義務及び第二十八条第一項又は第二項の報労金を支払う義務を免れることができる。
<sup>art-31/par-1 · https://japanlaw.org/ja/lost-property-act/art-31/par-1 · https://japanlaw.org/l/418AC0000000073/art-31/par-1</sup>
A person who lost property may, by waiving the rights the person holds in the property, be released from the obligation to reimburse the expenses referred to in Article 27, paragraph (1) and the obligation to pay the reward referred to in Article 28, paragraph (1) or (2).
<sup>machine translation, not official</sup>

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## Cites
- art-31/par-1: 第二十七条第一項 → 遺失物法 第二十七条第一項 (Article 27, paragraph (1)), art-27/par-1 — https://japanlaw.org/ja/lost-property-act/art-27/par-1 · https://japanlaw.org/l/418AC0000000073/art-27/par-1
- art-31/par-1: 第二十八条第一項 → 遺失物法 第二十八条第一項 (Article 28, paragraph (1)), art-28/par-1 — https://japanlaw.org/ja/lost-property-act/art-28/par-1 · https://japanlaw.org/l/418AC0000000073/art-28/par-1
- art-31/par-1: 第二項 → 遺失物法 第二十八条第二項 (Article 28, paragraph (2)), art-28/par-2 — https://japanlaw.org/ja/lost-property-act/art-28/par-2 · https://japanlaw.org/l/418AC0000000073/art-28/par-2

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 遺失物法 — the text in force from 2025-06-01 (https://laws.e-gov.go.jp/law/418AC0000000073/20250601_504AC0000000068), retrieved 2026-10-11
- Japanese Law Translation Database System, Ministry of Justice (法務省) — 遺失物法 — its English title as the Ministry of Justice's translation database lists it (https://www.japaneselawtranslation.go.jp/en/laws/view/1640), retrieved 2026-10-11
- claude-sonnet-5-5 — Machine translation, batch lost-property-act-20261011T093710-004, translated 2026-10-11
- This site's parser, version 186 — 遺失物法 — structure, counts, cross-references and defined terms, computed 2026-10-11