This empiric research has virtual work teams as the object of study with their relation with trust as dependent variable to obtain an effective work of individuals who form the team. It has, as independent variables three factors that are thought appropriate for building trust: web conferencing, timely information, and cultural diversity. It is an exploratory and descriptive work with mixed focus. There were established four descriptive hypothesis that, search the communication level, the existence of timely information and the identification of cultural diversity within virtual work teams. This work verified the existence of trust in virtual work teams, proved that the independent variables generate it, and the established hypothesis are correct. It was designed an original instrument for its application to a population of 23 students of a master degree virtual educative program in a private university of Monterrey, Nuevo León. On the instrument questions related to trust and the three appropriate factors for trust building were included. Future researches are possible; even so, this work includes theoretical and practical contributions. It contains innovation in its literature and functionality to the organizational world by helping to understand the new configurations of work done by human resources, their perfection in methods, and working habits in a global environment of geographical and temporal separation.