Formal and Informal Groups

Formal and informal groups are distinguished by how they are created and the basis of their structure. A formal group is deliberately formed by an organisation to achieve specific, stated objectives. Its members are assigned roles, there is a clear hierarchy, and rules of behaviour are explicitly defined. Examples include a school's student council, a company's finance department, or a committee appointed to organise an event. The primary purpose of a formal group is to accomplish the task for which it was created.

An informal group, in contrast, emerges naturally from the interactions, shared interests, or friendships among people. It has no official structure, no formally assigned roles, and its rules are unwritten — they are based on mutual understanding and social norms. Examples include a group of colleagues who eat lunch together every day, a group of friends who play cricket after work, or a cluster of students who share a common hobby. The purpose of an informal group is to satisfy members' social and psychological needs — belonging, companionship, and security.

The textbook highlights that informal groups often develop within formal groups. For instance, within a company's marketing department (a formal group), several smaller informal groups may form based on shared lunch breaks, similar age, or common interests. These informal groups can significantly influence the formal group's functioning — they can boost morale and cooperation, or they can spread rumours and resist official changes. A good manager recognises the existence of informal groups and works with them rather than against them.