Which department of the Inland Revenue Department handles social security complaints?

Ministry of social labor and social security. According to the inquiry in official website, State Taxation Administration of The People's Republic of China, People's Republic of China (PRC), all social insurance premiums are uniformly collected by the tax authorities, but the implementation of labor security is still the responsibility of local social labor security departments. If you need to complain about social security, you can call the Social Labor and Social Security Department of the Local Taxation Bureau at telephone number 12366.