中华人民共和国劳动合同法 第十六条

劳动合同由用人单位与劳动者协商一致，并经用人单位与劳动者在劳动合同文本上签字或者盖章生效。
劳动合同文本由用人单位和劳动者各执一份。

Labor Contract Law of the People’s Republic of China, Article16

A labor contract shall become effective when the employing unit and the worker reach agreement through consultation thereon and both parties sign or affix their seals on the copies of the contract.

The employing unit and the worker shall each keep a copy of the labor contract.