IS plays a major role in planning, initiating,organising and controlling the operations of systems. Therefore it has a major role in decision making for businesses. Real time data, to the right people, have helped managers to make the right decisions. One such example of this are customers that provide real-time data on customer complaints to the human resource manager. This kind of information is vital for the human resource manager to improve the efficiency of the running of the business and helps improve decision making. there are four stages of decision making- intelligance,design, choice and implementation.these decisions are then made at three levels within the business – operational level, managerial level and executive level. There are different types of decisions made by each level. Information systems are used to help make these decisions.