Decisions in wood processing are still made based on experience. In the conditions of high dynamism of the production systems, this inevitably leads to negative consequences. The consequences are great disturbances, which in turn cause low efficacy and profitability of the production systems. The solution of disturbances in production systems should be searched in the transition from the experience, to modern decision making. One of the many applications is the definition of the optimal production plan. In the conditions of interrupted production, when several criteria should be satisfied, and if there are different goals, the production plan optimization has a high significance. Modern decision making includes a series of mathematical methods, which allow the making of optimal decisions in different segments of production and business systems. In the situations where there are several criteria and different goals, as in the case of defining the optimal production plan, multicritera decision making is the recommended method. The criteria for the study production system were defined and the different goals were set. The optimal production plan was defined by the Analytical Hierarchy Process-AHP. Based on the decision diagram, it can be concluded that the optimal alternative of the plan is Alternative 3. For the production systems in wood processing to be efficacious and profitable, the quality of decisions should be good. This means that decision making from the sphere of experience, should be transferred to the sphere of modern decision making. Modern decision making is a set of mathematical methods which belong to different spheres of decision making.