In this article, we investigate the relationship between social capital and employee participation in Gurgan Medical Science University. The results of our study indicate that there is an indirect relationship between employee participation networks and employee participation, an indirect relationship between trust and closeness with employee participation and there is an indirect relationship between employee closeness and employee participation. Our investigation shows that there is a relationship between trust grade and employee participation. In other words, as trust grade increases there is an increase in employee participation. Another observation is that there is an indirect relationship between employee communication networks and participation. Another observation is that there is a direct relationship between communication network and closeness as well as trust, which means that as communicational network increases, trust and closeness grades in organization increase too.