This document discusses work teams and groups. It defines groups and work teams, and explains the benefits of working in teams for both organizations and individuals. Some key factors that influence group behavior are discussed, such as norms, cohesion, and social loafing. The stages of group formation and characteristics of mature groups are also outlined. The document describes task and maintenance functions that influence group performance and the factors that determine group effectiveness. It discusses self-managed teams and the importance of diversity and upper management teams.