Some deviation in performance can be expected in all activities. It is, therefore, important to determine the acceptable range of deviations. Also, deviations in key areas of business need to be attended more urgently as compared to deviations in certain insignificant areas.
Critical Point Control: It is neither economical nor easy to keep a check on each and every activity in an organization. Control should, therefore, focus on key result areas (KRAs) which are critical to the success of an organization.
Management by Exception: Management by exception, which is often referred to as control by exception, is an important principle of management control based on the belief that an attempt to control everything results in controlling nothing.
After identifying the deviations that demand managerial attention, these deviations need to be analyzed for their causes. Deviations may have multiple causes for their origin. These include unrealistic standards, defective process, inadequacy of resources, structural drawbacks, organizational constraints and environmental factors beyond the control of the organization.