On the one hand, there is a common benefit when people have a stable lifelong career. The employee will have carefree life and certain incomes to cover the expenses such as housing, foods and transportation cost that regular-changing worker are rarely received. It's also suitable for people who want to experience a leisurely normal life without having to struggle to find work. For example, teachers who are already the payroll state, don not need to nervous about being fired, ensuring a regular monthly salary even they are retired and can have time with their family and experiencing social life.