Training with the use of problem-based learning has become increasingly popular at all levels of education, including business education. An example of this type of learning is case study method. This method allows developing skills and competencies used by managers in their work, for example ability to synthesize, identify problems, and make decisions. Despite many advantages of the case study method and its widespread use in the training of executives and managers, it is used to illustrate the problems of small and medium-sized enterprises (SMEs) relatively rarely. Many business case studies are based on the problems faced by large companies, and not those from the SME sector, which greatly reduces the possibility of using this method of training for managers and owners of SMEs. This paper helps to solve this problem by presenting a model used to create business case studies devoted to the needs of SMEs. Case studies created on the base of this model can be used to train managers, supervisors, owners of such companies and prospective candidates. The model can also be developed and modified, which increases its potential application in other training areas. The model was developed and tested within the INNOCASE project (project website: www.innocase.zie.pg.gda.pl).