The unit deferred payment of social security for one month.

Legal analysis: if the employer delays the payment of social security for one month, it can make a supplementary payment, and the amount to be paid is determined according to 1 10% of the amount paid by the unit last month. After the payer completes the declaration procedures, the social insurance fee collection agency shall settle the account according to the regulations.

Legal basis: Article 62 of People's Republic of China (PRC) Social Insurance Law. If the employer fails to declare the amount of social insurance premiums that should be paid according to the regulations, the amount that should be paid shall be determined according to 1 10% of the amount paid by the employer last month. After the payment unit completes the declaration procedures, the social insurance fee collection agency shall make settlement in accordance with the provisions.