This student guide is intended to assist persons employed as supervisors in improving their ability to control output. Discussed in the first three sections are the following topics: the control process (stages in control, control and planning, the supervisor and control, and ways of choosing areas to control); ways of controlling output (general and specific techniques for controlling work flow, materials, quality, plant and equipment, and work methods); and the workteam and control (motivation and training and development). Each of these sections contains an introduction, sections of instructional text that are interspersed with reinforcing learning activities, and a section summary. The fourth part of the guide includes a series of performance checks (an end check, a tutor check, and a work-based project). A unit review, which also includes a description of related extension courses and resources, concludes the guide. (MN)