This article analyzes the scientific and practical aspects of implementing Kaizen tools as one of the modern methods for improving production efficiency in the mechanical engineering industry. The production system is considered as the research object, where existing losses are identified and mechanisms for their reduction are developed. Approaches for optimizing production processes are proposed based on the 5S system,
the plan–do–check–act (PDCA) cycle, and visual management. Using the developed mathematical models, production efficiency indicators, overall
equipment effectiveness (OEE), and product quality parameters are evaluated. The research results demonstrate that the implementation of
Kaizen tools can increase production efficiency by 25–40%, significantly reduce the defect rate, and improve resource utilization efficiency.