Does the new company need the resignation certificate of the old company to pay social security?

When a new company transfers to social security, it needs a certificate of resignation. After the employee resigns, the employer shall handle the resignation procedures and social security transfer procedures for the employee. After leaving the company, the original company will reduce the number of employees from its company account, and then the workers can continue to pay social insurance as freelancers themselves, or they can transfer to the new company account to let the new company continue to pay social insurance. Provident funds are similar to social security.

Legal basis: Social Insurance Law Article 2 The state establishes social insurance systems such as basic old-age insurance, basic medical insurance, industrial injury insurance, unemployment insurance, maternity insurance, etc., to protect citizens' right to get material help from the state and society according to law in case of old age, illness, industrial injury, unemployment and maternity.