The article is focusing on an analysis of the importance of foreign workers at the Czech labor market in the context of current pandemic and economic competitiveness sustainability in the field of features of 4.0 industry’s development as current security highlight issue. There are analyzed possibilities and limits of automation a robotization with the emphasis on current trend in replacing lack of home ground working forces by economic foreign migration. The article is based on the theory of labor market segmentation, which is a basis for analyzing of the Czech labor market’s structure. The analysis is pursued in two interconnected levels - in the increasing of foreign population in the Czech Republic. Further in the branch structure of labor market with significant rate of foreign workers in context of present needs of industry automation.