The identification of scientific issue and the circadian rhythm research concept for ATCO work performance

The article deals with the work conception and methodology, which is used for the analyzing, testing and evaluating the measured values during the research. The circadian rhythm is the most important contributor factor, which can impact the physiological and mental condition, work performance and health care of the individual. The jobs, where is need to work in shift, is the best example that the desynchronization of the biological rhythms causes more frequent health care and mental problems that other type of jobs. Consequently, it leads to the worst work performance. The article analyzes the possible optional methods for testing the individual circadian rhythms of air traffic controller's students.