(1 RC) - This document presents the symptoms of asthma and the possible means of dealing with it in order to provide information for workers who have developed respiratory problems due to their work environment. The brief includes the most common causes of work-related asthma, typically exposure to a group of chemicals called isocyanates, as well as listing jobs in which exposure to such negative chemicals often occurs. Also included are resources and guides for clinics to aid both the patient and the doctor in handling the effects of chemical exposure.