Most people in modern society spend more than eight hours a day working. Every employee has a certain job responsibility, but if he does what he is expected to he is usually exempt from bad consequences. He has a stable position. On the other hand, a competent worker may enjoy many promotions, raises and even get privileges like payday advance. These benefits are very important for employees to at least have an additional source of money as a fruit of their labor. This is also a good way of a motivation for them to really give their best shot to whatever task and job they are assigned to.
The reason why many companies should be aware and not deprive their employees of the benefits they really deserve. Because if not because of the hard works of each and every workers, there would be no successful company in this world.