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Over the last few years, the fourth industrial revolution has attracted academia and practices worldwide, however there are still many gaps related to the Industry 4.0, particularly related to the competences issue, because new concept requires new technology as well as workers with new competences. In the presented research it was assumed that there are Employees competences necessary for the development of Industry 4.0 concept in companies. So the question is, how much are these competences important for Polish companies? If they are meaningful, there will be sought Employees meeting those requirements, which will result in the development of the fourth industrial revolution in Poland. The lack of importance of these competences is interpreted by researchers as a lack of willingness of Polish Employees to develop a new era. The main objective of the presented research was to investigate the importance Employees' competences, key to the development of Industry 4.0 in Poland. The indirect aim was to diagnose the willingness of Polish companies to implement the new concept, in the aspect of obtained results. In research, there was used survey method, on a randomly selected group of companies.

This article presents research implications related to the analysis of current trends occurring in the industry and resulting from the analysis of trends in literature. A new trend is noticeable in the range of computer simulations using digital twin technologies in the optimization of intralogistics processes, the implementation of which is based on Lean philosophy. This article shows the connection of Industry 4.0 with Lean in the context of Digital Twin (simulation) in the area of intralogistics. A three-step methodology of literature research was developed and described. In accordance with the adopted research methodology, research questions were indicated and a detailed list of selection criteria was developed. The research methods included brainstorming and statistical analysis. The research results are presented in three sections: the results of the trend analysis, the results of the quantitative literature research, and the results of the complementary research. The research results confirm the existence of a new trend and form the basis for formulating objectives for further research.