The subject of research in this paper lies in the fact that it is important what kind of business decisions we make. It concerns a large number of members of the organization, so in the event of a wrong decision, it can have catastrophic consequences for the entire organization as a whole, if it deviates from rational decision-making methods. Managers must be responsible for the decisions they make because they affect not only careers but also people's lives. The aim of the research of this work is to explain, analyze and obtain the necessary information for solving the problem of rationality or irrationality. Rational decision-making requires an informed decision-maker and refers to the part of management that is directly related to scientific decision-making methods. This refers to the stages of the rational decision-making process in which these methods can be applied successfully. Decisions are made in a rational way by systematic thinkers who divide complex problems into elements, or smaller parts. They create a plan of action and look for the necessary information to solve the problem gradually. As is already known, rational decision-making is the most reliable way of decision- making, but it is not suitable for a rapidly changing environment. It is preferred that as many important decisions as possible are made rationally but it is not realistic to expect this. Strategic decisions will continue to be made based on intuition but very rarely, rationally. However, this does not mean that the decisions made by the intuition of some stage will not be according to the model of rational decision-making. The quality of intuitive decision-making is influenced by the number of possibilities for solving the problem and the probability of each possibility occurring. Intuition is a feeling that cannot be explained rationally, it refers to a hunch, to what feels right. Decision-making based on intuition, both in private and business life, should be kept to a minimum. Circumstances in which decisions are made based on intuition are not rare situations in which organizations find themselves.