Psychiatric epidemiology has gone through various stages of growth over the past five decades in IndiaWork environments are known to influence the psychological functioning of the individual. Psychiatric disorders constitute the leading occupational health problems. Epidemiological studies can explore the relationship between psychiatric morbidity. Prevalence rates for psychiatric disorders according to epidemiological studies in the general population in India varied from 0.95-13%. Some common psychiatric disorders are Obsessive-compulsive Disorder, Post-traumatic stress disorder, Depressive & Anxiety disorders, Bipolar disorder, Attention Deficit Hyperactivity Disorder, Autism, Drug abuse, Alcohol abuse, Schizophrenia.