Abstract: Back up behaviors in teams are help behaviors among members of a team that enable them to dynamically adjust their resource and energy to improve team performance. In this article, authors first introduce the definition of back up behaviors and some related concepts, as well as some types of back up behaviors. Next they summarize the measurement methods which are mostly used. Then the antecedents and consequences of back up behaviors are discussed. Finally the authors indicate some deficiencies related to the research, and the promising field that the research would be conducted.

Key words: team, back up behaviors, task performance, contextual performance