试论给付不当得利的构成要件及证明责任

On the Elements and Burden of Proof of Unjustified Enrichment by Supply

不当得利是民法中最为抽象的制度之一,其抽象性之所在即为对受益有无法律上原因的探求。不当得利制度的设立有效调整私法上无法律原因的财产变动,平衡受益人与受损人之间的利益冲突,进一步降低交易安全,是我国民事立法的重大发展。当前法律对不当得利的规定仅有一个法条和一个解释,过于笼统,实际操作性不强,以至理论和实务界对"无法律上原因"的证明责任持不同观点。

Unjustified enrichment is one of the most abstract regulations in the Civil Law,its abstract focuses on the seeking in whether the benefit has the legal reason or not.The setting up of regulation of unjustified enrichment effectively adjusts the property changes without the legal reason under the Private Law,balances the interest dispute between beneficiary and impaired people,and further decrease the truncation security,which is a big development in Civil Legislation in our country.In the existing law in China,there is only one article and one explanation about unjustified enrichment,which is also too general and almost inoperable,so that the theorists and practitioners hold the different argument on the 'no legal reason'.