Occupational factors are responsible for a large percentage of cases of asthma in adults of working age. This latest edition of a renowned resource reflects the rapid pace of discovery and research in workplace asthma that has taken place in recent years. This edition has been significantly restructured and places a greater emphasis on the clinical aspects of management and treatment. Several chapters commence with clinical histories and workplace scenarios relevant to the focus of the chapter, making it particularly germane for primary care providers to develop skills in early recognition of the disease.