Joanna Bugajska, PhD, D.Med.Sc. is the Manager of the Department of Ergonomics at the Central Institute for Labour Protection – National Research Institute in Warsaw. Her scientific, publication and area of expertise includes; assessment of workload and the health effects of excessive loads; type of work, the method of its performance and the occurrence of musculoskeletal overload disorders; individual and professional factors shaping work ability; principles of shaping work requirements to the psychophysical capabilities of the worker; impact of lifestyle, including physical professional and non-professional activity with disabilities. Joanna Bugajska is the author of 120 scientific publications including 92 publications indexed in international scientific databases and many speeches at scientific conferences nationally and abroad. Teresa Makowiec-Dąbrowska, PhD, D.Med.Sc. is a long-term employee of the Nofer Institute of Occupational Medicine in Łódź. She has nearly 50 years of experience in the field of work physiology. Her scientific, publication and area of expertise includes: impact of the circadian rhythm on physiological functions and work ability; assessment of workload and the health effects of excessive loads; the impact of the methods of work performance on the locomotor systems; physiological capabilities related to the requirements of the profession – work ability assessment; principles of shaping loads for employees of changed capabilities; impact of lifestyle, including physical professional and non-professional activity on health, quality of life and work ability. Teresa Makowiec-Dąbrowska is the author of 200 scientific publications (including 92 publications indexed in international scientific databases) and many speeches at scientific conferences nationally and abroad.