This report is on "Philosophies and concepts of organization behaviour". The organization's power, culture, and politics are a few of these aspects which ensure that the organizational practices motivate employees. The report will discuss culture in organizational context can be defined as shared values, beliefs or practices that employees working in a same workplace adopt and implement to interact with each other. In this report, effective versus ineffective team has been discussed and different group development theories will be discussed. This report will also highlight the various philosophies that can be applied in Waitrose in order to improve a business situation.