A group is consisted of a number of individuals working towards a common goal, but there is no psychological contract between them; the outcomes are less dependent on all the members working together, and there is usually no shared responsibility and accountability for outcomes. (Clegg et al, 2008) Typically there are two categories of groups in organizations, formal groups and informal groups. Formal groups refer to those groups where people have been specifically selected to complete a task or solve a problem. The characteristics of formal groups are its formal structure and task oriented. Examples could be a surgical team in the hospital, a production team in a factory. On the other hand, informal groups are groups that are not necessarily recognized or accepted by the organization. An informal group is one that forms outside the formal structuring of work roles. For instance, a group of workmates who meet for lunch every week to help achieve their own goals is an informal group as they are not obliged to do it.
A team can be defined as two or more people psychologically contracted together to achieve a common organizational goal in which all individuals involved share at least some level of responsibility and