The article is devoted to a comprehensive analysis of the role of artificial intelligence and machine learning algorithms in optimizing production processes and transforming employment models in the industrial sector labor market within the context of Industry 4.0. The aim of the study is to quantitatively assess the impact of investments in AI and ML on operational efficiency, cost structure, value added per employee, and the redistribution of labor functions across personnel categories. The empirical base consists of depersonalized financial and managerial reporting data from 458 large enterprises in mechanical engineering, metallurgy, and the chemical industry for 2018–2023 more than 125,000 observations , supplemented by macroeconomic statistics and a corpus of job descriptions and vacancies. The methodology relies on multiple regression methods with fixed effects, Difference-in-Differences for comparing "digital" and traditional enterprises, k-means cluster analysis of personnel strategies, as well as analysis of the dynamics of operational indicators OEE, downtime, defects, energy consumption and employment structure by cognitive complexity of functions. It is shown that the implementation of AI systems for predictive analytics and computer vision increases the OEE coefficient, drastically reduces unplanned downtime by more than 70% and the defect rate by more than 70% , while simultaneously decreasing process variability and the entropy of the production system. It is established that digitalization is accompanied by a reduction in the share of operators performing routine tasks and an increase in the number and remuneration of data specialists and engineering-technical personnel, which leads to internal income polarization and increases the importance of human capital management. Comparative analysis of investment projects demonstrates higher IRR, NPV, and ROI values for enterprises implementing full digital ecosystems compared to partial automation, with a characteristic "J-curve" payback pattern and a time lag of 18–24 months before the maximum effect is realized. It is concluded that AI serves not only as a source of productivity and profitability growth but also as a factor of deep structural transformation of the labor market, requiring adaptation of corporate strategies, education policy, and social protection mechanisms.