Such differences are questionable not only in terms of fairness; they are also economically inefficient, because they tend to limit labor mobility across firms and sectors. Employees may think twice before leaving a company if they are set to lose valuable perks as a consequence.
而这种差异状况需要被质疑的地方不仅是公平；这在经济学上这也是低效率的，因为它们往往​​限制了劳动力在企业和行业间的流动。在离开一个公司之前员工可能会反复权衡，因为他们将失去丰厚的各类津贴，但这也就无法实现雇主所需技能的积极匹配并限制了相应的供应，使得小型企业很难聘请到一流的人才。