Do you pay social security when you join the company on the 25th?

Legal analysis: the employer shall register social insurance within 30 days from the date of employment, and there may be cross-month situations. If this happens, the unit began to declare and pay social insurance premiums last month. In other words, if you go to work on the 25th, the employer will pay social security from this month.

Legal basis: Article 58 of People's Republic of China (PRC) Social Insurance Law. The employing unit shall handle 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.