Abstract: | This article reports some findings from a broader study concerning the development of professional expertise. The aim of the part that is described in this article was to find out whether certain job-related factors situated in the domain of socio-technical systems design (STSD), that is, control capacity, job satisfaction, and learning value of the job, influence the development of professional knowledge, skills, and capabilities throughout the career. The sample consisted of 559 middle- and higher-level employees working in eight large Dutch companies. Theoretical contributions from learning theory, human resource management and work, and organizational psychology are used to conceptualize the phenomenon of professional expertise and to develop a theory of expertise development in careers. By providing insight into the relationships between several job-related factors, on the one hand, and the development of professional expertise, on the other, this research is intended to contribute to theory building in adult development and learning. Influential job characteristics that are situated in the domain of STSD seem to be of high importance in view of a further human resource development. Paying close attention to an individual's job and its content is indispensable in order to guide growth throughout the career and to enable life-long development of professional expertise. |