Secondly, as group A students are contributing less, they surely get less benefit. Moreover, many companies which employ people in group A have to train them from ground-up. These companies take this cost from group A’s salary to reduce the risk of their employees leaving to other companies after being trained. So, less benefits are unavoidable and certain, group B members are more loyal and effective workers. They also have useful experience and skills. Besides, their education is the same as or even higher than that of group A. As the result, group B gets more benefits absolutely.