The article considers the possibility of introducing ergonomic indicators of the workplace into the system of lean production of the machine-building enterprise. The feasibility of taking into account ergonomic indicators is proved by the main tool of lean production - mapping of the flow of creation of production of the “shaft” part. Studies have shown that the accounting of ergonomic indicators allows to identify losses related to psychophysical factors affecting the employee, environmental factors of the employee (including production equipment) and eliminate them by planning and developing appropriate measures.