中华人民共和国劳动合同法 第六十六条

劳动合同用工是我国的企业基本用工形式。劳务派遣用工是补充形式，只能在临时性、辅助性或者替代性的工作岗位上实施。

前款规定的临时性工作岗位是指存续时间不超过六个月的岗位；辅助性工作岗位是指为主营业务岗位提供服务的非主营业务岗位；替代性工作岗位是指用工单位的劳动者因脱产学习、休假等原因无法工作的一定期间内，可以由其他劳动者替代工作的岗位。

用工单位应当严格控制劳务派遣用工数量，不得超过其用工总量的一定比例，具体比例由国务院劳动行政部门规定。

Labor Contract Law of the People’s Republic of China, Article 66

Labor contract employment is the basic form of employment for enterprises in China. Labor dispatch employment is a supplementary form that can only be adopted for temporary, auxiliary or alternative positions.

For the purposes of the preceding provision, the term "temporary position"refers to a position with a term of no longer than six months; the term "auxiliary position" refers to a non-primary business position aimed at providing services to a primary business position; and "alternative position" refers to a position that is filled on a substitute basis to replace a regular employee who cannot work for a given period due to full-time study, vacation or some other reason.

The employer must strictly limit the number of dispatched workers, and dispatched workers may not exceed a certain percentage of its total number of workers as stipulated by the Labor Administration Department of the State Council.