Why can cliques be harmful?
But sometimes groups of employees form cliques at work. When this happens, it is detrimental to employee morale and can lead to workplace bullying. Cliques cause employees on the outside to feel like they are less important or worthy than those on the inside. And, that's just bad for business.
Why do adults form cliques?
Cliques attract people for different reasons: For some people, being popular or cool is the most important thing, and cliques give them a place where they can get this social status. Other people want to be in cliques because they don't like to feel left out.