Civil Code Article 506
This English translation was last updated on 2021-01-20, but the Chinese text was amended on 2026-08-17. Later amendments may not be reflected in the translation — please refer to the Chinese text.
If, at the time of the making of the contract, only an approximate estimate has been made for remuneration, and if, owing to circumstances for which the proprietor is not responsible, the remuneration will greatly exceed the estimate, the proprietor may rescind the contract either during the execution of the work or after its completion.In the case specified in the preceding paragraph if the contract is for the construction of a building or other works executed on land, or for vital repairs of the said building or works, the proprietor may only demand for a reasonable reduction of the remuneration; or, if the work is not completed, he may notify the undertaker to cease the work and may rescind the contract.When the proprietor rescinds the contract in accordance with the provisions of the two preceding paragraphs, he shall compensate reasonably to the undertaker for the injury.
中文原文 民法第506條
訂立契約時，僅估計報酬之概數者，如其報酬，因非可歸責於定作人之事由，超過概數甚鉅者，定作人得於工作進行中或完成後，解除契約。
前項情形，工作如為建築物或其他土地上之工作物或為此等工作物之重大修繕者，定作人僅得請求相當減少報酬，如工作物尚未完成者，定作人得通知承攬人停止工作，並得解除契約。
定作人依前二項之規定解除契約時，對於承攬人，應賠償相當之損害。
前項情形，工作如為建築物或其他土地上之工作物或為此等工作物之重大修繕者，定作人僅得請求相當減少報酬，如工作物尚未完成者，定作人得通知承攬人停止工作，並得解除契約。
定作人依前二項之規定解除契約時，對於承攬人，應賠償相當之損害。