The book is exhaustively upgraded and improved to incorporate the syllabi of various universities in India. It is specifically designed to serve the basic text for undergraduate course in “Industrial Safety and Environment” of Punjab Technical University, Jalandhar. Preparation of the first edition was strongly motivated with the objective that the students should be comfortable with the basic concept of industrial safety. The second objective was that the students should find the text interesting, which makes them grasp the subject by self-study. In present edition, the above objectives are kept intact, but the suggestions from users have led us to make the small changes that have improved the overall quality of the book. To make the book more useful new chapter on Ergonomics have been added and existing chapters have been thoroughly revised and enlarged.