I have social security still need to pay pension

Social security only buy old age is not allowed, because social insurance includes medical insurance, work injury insurance, pension insurance, unemployment insurance and maternity insurance, they are a whole, is necessary to buy at the same time. This is for the employer. Individuals can only constitute pension insurance as well as medical insurance.

Article 23 of the Social Insurance Law of the People's Republic of China*** Employees shall participate in the basic medical insurance for employees, and shall pay the basic medical insurance premiums by the employing unit and the employees in accordance with the state regulations***. Individual industrial and commercial households without employees, part-time workers who do not participate in the basic medical insurance of employees in the employing organization, and other flexibly employed persons may participate in the basic medical insurance of employees, and individuals shall pay the basic medical insurance premiums in accordance with the state regulations.