After the last unit stopped insurance, the new unit could not pay social security.

Legal analysis: I haven't gone through the formalities of dissolving the labor contract with the unit, but I still have a labor relationship with the unit, and my social security personal information shows that I belong to an on-the-job person, so I can't take up my post with pay in any local unit. Only when you go back to the original unit to go through the formalities of dissolving the labor contract will the labor relationship cease to exist. The unit goes to social security to handle your downsizing procedures, and at the same time gives you a receipt. When you get the receipt and give it to the new unit, the problem will be solved.

Legal basis: Article 58 of the Social Insurance Law of People's Republic of China (PRC) stipulates that the employer shall apply to the social insurance agency for social insurance registration for employees within 30 days from the date of employment. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay. Employees-free individual industrial and commercial households who voluntarily participate in social insurance, part-time employees who do not participate in social insurance in the employing unit and other flexible employees shall apply to the social insurance agency for social insurance registration. The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.