How to calculate the limited overtime pay of Kunshan Chang Ying cemented carbide?

Chang Ying, Kunshan implements a five-and-a-half-day working system, and the salary is ostensibly high, so all meals and accommodation fees should be deducted. There are 150 food subsidies and housing subsidies in the salary, and more than 500 yuan will be deducted for living in the factory. In fact, the money subsidized to employees has long been deducted, and the working environment inside is not very good, and there is a lot of black ash (that is, the dust of tungsten steel raw materials is particularly large). For the sake of health, it is best not to work in it; The salary inside is not very high, and the requirement for low salary is particularly high; Working in it depends entirely on relationships, and it is easy to get rid of others without relationships; Chang Ying is an associate of the company.