If the company fails to pay insurance for its employees, does it violate Shanghai's new social security policy? What should I do in this situation?

Yes, you can complain to the labor and social security department.

People's Republic of China (PRC) social insurance law

Chapter VII Collection and Payment of Social Insurance Fees

Article 57 An employing unit shall, within 30 days from the date of its establishment, apply to the local social insurance agency for social insurance registration with its business license, registration certificate or unit seal. The social insurance agency shall, within fifteen days from the date of receiving the application, examine and issue the social insurance registration certificate.

Where the social insurance registration items of the employing unit are changed or the employing unit is terminated according to law, it shall, within 30 days from the date of change or termination, go to the social insurance agency to handle the change or cancellation of social insurance registration.

The administrative department for industry and commerce, the civil affairs department and the organization management organ shall promptly notify the social insurance agency of the establishment and termination of the employing unit, and the public security organ shall promptly notify the social insurance agency of the birth, death, household registration, transfer and cancellation of an individual.

Article 58 An employing unit shall, within 30 days from the date of employment, apply to the social insurance agency for social insurance registration for its employees. 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.

Chapter II XI Legal Liability

Eighty-fourth employers do not apply for social insurance registration, the social insurance administrative department shall order them to make corrections within a time limit; If no correction is made within the time limit, the employer shall be fined between one and three times the amount of social insurance premiums payable, and the directly responsible person in charge and other directly responsible personnel shall be fined between 500 yuan and 3,000 yuan.

Article 85 Where an employer refuses to issue a certificate of termination or dissolution of labor relations, it shall be handled in accordance with the provisions of the Labor Contract Law of People's Republic of China (PRC).

Article 86 If an employer fails to pay social insurance premiums in full and on time, the social insurance premium collection agency shall order it to pay within a time limit or make up for it, and from the date of default, an overdue fine of 5/10000 shall be added daily; Failing to pay within the time limit, the relevant administrative departments shall impose a fine of more than one time and less than three times the amount owed.