What phone calls do migrant workers make to complain about accidents at the construction site?

If migrant workers on the construction site have an accident and want to make a phone call to complain, they can call the local labor inspection brigade, the labor dispute arbitration committee, the police station of the Public Security Bureau, the Human Resources and Social Security Bureau, the complaint hotline 12345 and the legal aid hotline 12348. These calls are made by relevant government departments, and they should be a thorny matter to help migrant workers solve accidents at construction sites. Remember: the government can only help if the complaint is supported by factual evidence. For example, the video, video and audio recording of the accident scene, the punch-in record of the day's work, the work order of the day's assignment, the medical record of hospitalization, the original (or copy) of the receipt of medical expenses, the written materials such as hospitalization checklist and laboratory test sheet, etc., all belong to factual evidence.