Is it legal for units to link social security with other places collectively?

The law does not clearly stipulate that it is illegal to "affiliate" a company to pay social security.

Labor law, social insurance law, etc. It is clear that employers and their employees must participate in social insurance.

Although the Social Insurance Law forces employers to pay social security fees for employees, which is a mandatory obligation of employers, it does not prohibit employers from paying social security fees for employees who are not in their own units. This behavior does not harm the interests of the state and the third party. Workers and enterprises create conditions that meet the requirements of paying social insurance premiums and do not harm the interests of others.

Therefore, paying social security is not explicitly prohibited by our laws.