Why do hotels stop employees from eating leftovers from their guests without economic losses?

The first guest can guarantee that there is no infectious disease. In the second hotel, several boxes of meat were broken and the water deteriorated too quickly. It is said that it is a waste for employees to eat the third leftovers. Obviously disorderly and unruly. Fourth, it is better to give leftovers to employees than to eat them yourself. Don't eat after eating. Don't spray them with emotional work ideas-