1. Migrant workers are highly mobile and often leave after working in a city or enterprise for a period of time. It is difficult for enterprises to track their contact information.
2. Some enterprises have not paid social security and provident fund for migrant workers, and have not signed formal labor contracts, so the cost of wage arrears is relatively low, and the risk of wage arrears is relatively small.
3. Some enterprises have financial difficulties and capital turnover is ineffective, which leads to the inability to pay migrant workers' wages on time.
4. The supervision of some local governments is relatively weak, and the punishment for enterprises that are in arrears with wages is not severe enough.
It is not difficult for migrant workers to implement the "monthly salary system". As long as enterprises standardize, sign formal labor contracts with migrant workers, pay social security and provident fund on time, and pay wages regularly, the "monthly salary system" can be realized. At the same time, the government should strengthen the supervision of enterprises, attach importance to the protection of the rights and interests of migrant workers, severely punish enterprises that maliciously default on wages, and safeguard the legitimate rights and interests of migrant workers.