## 6 Conclusions  
The author's contribution to the academic literature is the development of a new method of assessing the effectiveness of the use of available resources when implementing production processes and verification of its applicability in the actual production process of the automotive industry. The method was developed in response to the research gap identified in the literature review [2; 14; 16; 17; 27; 28; 29; 30; 31; 35; 36; 37; 38; 39; 40; 41], which showed that there is a lack of a quantitative method for assessing the production processes effectiveness, which, taking into account the categorization of the production losses, would allow at the same time to evaluate the main areas (production and production-related) contribution in the generation of these losses. The literature review of the latest research in the field of manufacturing engineering [7; 19; 20; 21; 22; 23; 24; 25; 26] showed that researchers are currently focusing more on developing digital tools for Industry 4.0 than on assessment methods. Since the method is complex and detailed, it can be used to support the verification of solutions used in multifactor processes--especially in the coming era of Industry 5.0, which emphasizes human collaboration with other resources. The main purpose of the method is to assess the effectiveness, availability, performance and quality in the implementation of production processes by operators, as well as in the execution of production-related processes (logistics, maintenance, organizational) by identifying production losses in given areas. The method is designed to control the effects of production realization, so its main area application area is manufacturing enterprises. Since the measurements carried out for the purposes of the method concern production losses, the method can be applied practically anywhere where such losses may occur. Due to the categorization of losses and the numerical nature of indicators, the method can be applied for any production company, for any level of organization, for any period of time, independently for a selected area, or even for a selected factor in a selected area. A fundamental requirement for the method's success is a standardized scope of duties of the units involved, so that both employees and evaluators know precisely the competencies of each area--the weaknesses of the method, besides the time-consuming process of data collection and analysis and the possibility of human error, are doubts about obtaining reliable results in enterprises with a non-standardized scope of duties. It is recommended to conduct the measurements during the company's standard work period (outside of vacations or external audits) to obtain reliable data. The time for collecting measurements should be adjusted according to the complexity of the processes and the purpose (shorter if there is a general assessment of efficiency after implementing some improvement, longer if there is a need to identify the specific cause of some problem). The application of the method to a company from the automotive industry confirmed the validity of the assumption that its effectiveness is influenced by various factors, and not only the operation of machines. Therefore, the extension of the standard OEE method with loss categorization made it possible to fill the research gap. Further research could include the following:  
* extending the scope of the method to include new areas or assessment of cooperation with suppliers,
* application of the method to other production companies, e.g., to identify the spare capacity or to select the employees for production operations not only based on the competency matrix, but also on the results of the employees' effectiveness within the scope of possible duties,
* integrating production effectiveness results with financial results,
* integrating the method with the Andon system,* combining the method with intelligent optimization algorithms in order to select employees for the relevant tasks in more complex systems. Conceptualization, J.K. and A.B.