Any contemporary work system should have and continuously develop its adaptive capacity. This is prerequisite to not only existence, but primarily development in a difficult and complex environment. The adaptability of various work systems is not the same. It is determined by many factors: personnel, technology, organization, and the economy. They all can facilitate or impede the undertaking of adaptation effort by the individual work systems. Bearing in mind the co-existence and mutual interdependence of these factors, the article concentrates on the role of human resources in molding the adaptive capacity of work systems. It also undertakes an effort to demonstrate how to build adaptive capacity in work systems on the basis of the adaptability of workers.