特定商取引法第9条
Cooling-Off Right for Door-to-Door Sales Contracts
訪問販売における契約の解除（クーリング・オフ）
Plain-language explanation
Article 9 of Japan's Act on Specified Commercial Transactions establishes the "cooling-off" system for door-to-door sales (including in-home visits, street solicitation "catch sales," and appointment-based sales). It gives consumers who sign a contract through these methods the unconditional right to cancel within 8 days of receiving the legally required written contract document, without needing to give any reason.
Critically, if the seller fails to provide the mandatory disclosure document, or provides one that is missing required information, the 8-day clock never starts — meaning the consumer can cancel at any time, even months or years later. Cancellation can be communicated in writing (e.g., certified mail) or electronically (e.g., email), and Japanese law uses the "dispatch principle," so simply sending the cancellation notice within the period is sufficient to make it effective. Once cancelled, the consumer owes no penalty or damages, must be refunded any payments already made, and the seller must retrieve any delivered goods at its own expense. This is a mandatory rule — any contract clause attempting to waive or restrict cooling-off rights is legally void.
For business owners, the practical takeaway is clear: contract documents given to customers in door-to-door sales must strictly comply with the format and content requirements under the law, or the cancellation window effectively never closes. Sales teams should also be trained to handle cooling-off requests promptly and without resistance, since disputing a valid cooling-off notice can expose the company to regulatory action and reputational risk.
日本語での解説
特定商取引法第9条は、いわゆる「クーリング・オフ」制度を定めた条文で、訪問販売（自宅や職場への訪問、キャッチセールス、アポイントメントセールスなど）によって商品やサービスの契約を結んだ消費者に対し、一定期間内であれば無条件で契約を解除できる権利を保障するものです。事業者から交付される法定の書面（契約書面）を受け取った日から原則として8日間、この解除権を行使することができます。事業者が法定の記載事項を満たさない書面を交付した場合や、書面を交付しなかった場合には、この8日間のカウントが始まらないため、消費者はいつまでも解除できる状態が続くことになります。
解除の意思表示は書面（内容証明郵便等）または電磁的記録（メールなど）で行うことができ、発信主義が採られているため、期間内に発信すれば効力が生じます。解除がなされた場合、消費者は違約金や損害賠償を支払う必要がなく、既に支払った代金があれば全額返還を受けられ、引き渡された商品は事業者の負担で引き取ってもらえます。これは訪問販売特有の「不意打ち性」（消費者が十分検討する時間がないまま契約させられるリスク）に対応するための強行規定であり、事業者側がクーリング・オフを制限する特約を結んでも無効となります。
事業者側にとっては、契約書面の交付義務を厳格に履行すること、そしてクーリング・オフ期間中の解除申し出には迅速かつ適切に対応することが、法令遵守とトラブル回避の両面で極めて重要です。書面不備を放置すると、契約から何年経ってもクーリング・オフされるリスクが残るため、実務上は書面のフォーマットチェックが必須となります。
Common scenarios
- ▸A door-to-door salesperson signs up a homeowner for a water purifier contract, and the customer wants to cancel three days later
- ▸A company selling home renovation services fails to provide a proper written contract, and a customer cancels the contract two months after signing
- ▸A consumer who was approached on the street and taken to a cafe to sign up for an English conversation course wants to exercise cooling-off rights
- ▸A business receives a cooling-off cancellation notice by email and must determine whether to accept it as valid
- ▸A sales company disputes a customer's right to cancel by pointing to a no-cancellation clause in the contract
Related statutes
- 特定商取引法第4条"
- "特定商取引法第5条"
- "特定商取引法第9条の2"
- "特定商取引法第60条
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