Abstract: Labor contract is the treaty which is made by labors and working units in order to set up the working relation and confirm the right and obligation between the two sides. It is also the important safeguarding way to defend the workers rights. The absolution system is an important part in labor contract. It greatly influences the interest of the two sides. Now, we attempt to analyze the 31st item in Labor Law from the following aspects: the quality in law, the problem caused by one side who break the contrac...