Merchant's Right to Claim Reasonable Compensation

Plain-language explanation

This article establishes that when a merchant performs an act for someone else within the scope of their business, the merchant can claim "reasonable compensation" even if there was no explicit prior agreement on payment. Under general civil law principles, work performed without a clear promise of payment can sometimes be treated as free of charge, but this commercial law provision creates a special rule: because merchants act professionally and for business purposes, their services are presumed to be compensated unless otherwise agreed.

This reflects the reality of commercial transactions — a merchant acting within their trade or profession is not expected to work for free. For example, if a business owner is asked to perform consulting work, repairs, or logistics services without a written fee agreement, this article gives them a legal basis to demand payment based on market rates or the reasonable value of the service, even after the fact. If the parties did agree on a specific fee, that agreement takes priority; this article only fills the gap when no explicit terms exist.

In practice, this is a valuable protection for business owners who take on jobs based on informal requests, phone calls, or verbal agreements, since it prevents clients from arguing "we never agreed to pay." However, because "reasonable compensation" is not a fixed number and can lead to disputes over amount, it's best practice to document fee arrangements in writing whenever possible to avoid disagreements about what counts as "reasonable."

日本語での解説

Common scenarios

• ▸口頭やメールのみで業務委託を受けた事業者が報酬未払いを主張された場合の請求根拠"
• ▸"コンサルティングや仲介サービスを提供したが契約書に報酬額の記載がなかった場合"
• ▸"取引先からの緊急依頼で作業を行ったが事前に金額交渉をしていなかった場合"
• ▸"下請け業者が発注者から「無償のはず」と主張された際の反論根拠"
• ▸"商取引の慣行に基づき相場価格での報酬を請求したいケース