The company underpays social insurance.

Legal analysis: you can negotiate with the unit first. If negotiation fails, report to the local human resources and social security bureau at telephone number 12333, and ask the unit to pay social security fees.

Legal basis: Article 82 of People's Republic of China (PRC) Social Insurance Law. Any organization or individual has the right to report and complain about violations of social insurance laws and regulations.

Social insurance administrative departments, health administrative departments, social insurance agencies, social insurance fee collection agencies, financial departments and audit institutions shall, within the scope of their respective functions and duties, handle reports and complaints according to law; If it is not within the scope of responsibilities of the department or institution, it shall be informed in writing and handed over to the department or institution that has the right to handle it. Departments and institutions that have the right to deal with it shall deal with it in time and shall not shirk it.