Occupational health is a multidisciplinary field that deals with the safety, health and welfare of people at work. Fostering a safe and healthy work environment is the primary goal of this domain. It also aims to protect co-workers, family members, employers, etc., who have chances of getting affected by the workplace environment. Occupational health has a strong focus on primary prevention of physical, biological and psychosocial hazards. Environmental health is the domain of public health that deals with all types of the natural and built environment that affect the human health. Environmental epidemiology, toxicology, exposure science, environmental engineering and environmental law are the five basic sub-sets that contribute to the branch of environmental health. The objective of this book is to give a general view of the different areas of these fields and its applications. It explores all the important aspects of occupational and environmental health in the present day scenario. This book with its extensive content provides the readers with a thorough understanding of the subject.