Organization models and organization structures as well as its applications in practice on the example of the company AD Plastik ltd. are presented in this thesis. AD Plastik ltd. with its headquarters in Solin is a leading company for production and development of interior and exterior car components in Croatia and one of the leading companies in Eastern Europe. The well-known organization modes and organization structures most frequently used in the process of company organization design are described in the introductory, theoretical part, along with the car industry peculiarities and the challenges that industry is facing. AD Plastik organizational structure, product range and production qualities important for the product range realization, is given in the second part. Special attention is dedicated to the quality demands and delivery JIT (just in time) control. Interior and exterior parameters of quality control results have been scrutinized in detail. The third part comprises organizational structure presentation of the planning and dispatch department, and document flow of a product order realization (on a bumper example). A list of complete documentation is explained; software used in issuing and surveying a work order as well as product control mechanism are described. Communication models buyer-supplier in case of a faulty product are given as well. Improvement options, organization level increase and the possible tools needed to achieve them in the production process are presented in the last part