Outsourcing companies pay social security.

Legal analysis: Who will buy workers' social security after labor outsourcing? Generally speaking, enterprises (actual employers) do not need to buy social security for outsourced employees. Because usually in enterprises and outsourcing services, when the company (actual employer) signs an agreement, it will stipulate that the labor outsourcing company will buy social security for the outsourced employees, so the enterprise does not need to buy social security for the workers. Of course, if there is no clear agreement between the two parties when signing the outsourcing contract, then the actual employer must provide social security for the employees.

Legal basis: Article 29 of the Social Insurance Law of People's Republic of China (PRC) stipulates that the part of the medical expenses of the insured who should be paid by the basic medical insurance fund shall be directly settled by the social insurance agency, medical institution and pharmaceutical business unit. The administrative department of social insurance and the administrative department of health shall establish a settlement system for medical expenses in different places to facilitate the insured to enjoy the basic medical insurance benefits.