Why movie theater part-time jobs need social security certificate

Part-time movie theater need social security certificate is because the employees work for the unit, there is an actual labor relationship, if the employees did not pay social security in other units, then the part-time unit is also required to pay social security for the employees, otherwise it is a violation of the law. According to the query related information, the labor law, article 72 of the social insurance fund according to the type of insurance to determine the source of funds, and gradually implement the social integration. Employers and workers must participate in social insurance and pay social insurance premiums according to law.