Section 1 People at work - an interactive relationship: origins; a systems viewpoint. Section 2 The work environment: work, skill and fatigue; a guideline to manual materials handling; repetitive strain injury; human stress, circadian rhythms and shift work; job satisfaction and work humanization. Section 3 Design for human use and function: the industrial work station; the office work station; equipment design for human use; hand tools. Section 4 Physical agents in the work environment: vibration; sound and noise; heat gain and heat tolerance; heat loss and cold tolerance; vision, illumination and visual hazards; the atmosphere, respiration and barometric pressure; the effects of barometric pressure. Section 5 Chemical agents and aerosols in the work environment: review of organic chemical terminology; review of principles of industrial toxicology; toxicity in the work environmment - some selected chemicals; dusts and other solid particles; control of chemical agents and aerosols in the work environment; review of principles of vetilation for contaminant control.