The problem and the solution. A prominent feature of planned training on the job is that it occurs in the actual work context. That working and learning occur in the same location is often viewed as a potential advantage of this training approach. However, the interaction of working and learning in the same context has seldom been explained beyond the claim of increased relevance. This chapter proposes that situated learning constructs can be used to explain how trainees construct knowledge from job performance. Of importance in situated learning are the constructs of work content; the work context; and the availability of a work community to guide and assist in planning, interpreting experience, and constructing learning.