One in a series of core instructional materials for apprentices to use during the first or second years of apprenticeship-related subjects training, this booklet deals with working in organizations. The first section consists of an outline of the content and scope of the core materials as well as a self-assessment pretest. Covered in the three instructional chapters included in the booklet are the nature of organizations, work behaviors and rules, and pride in work. Each chapter contains an overview; an introduction and objectives; principles, examples, and applications; additional information; and self-test exercises. Appended to the booklet are answers to the self-assessment pretest, answers to the self-test exercises, a posttest, and answers to the posttest. (MN)