Before revision: Environment, health and safety (EHS ) is the set that studies and implements the practical aspects of protecting the environment and maintaining health and safety at occupation.
After revision: Environment, health and safety (EHS ; or health, safety and environment –HSE–, or safety, health and environment –SHE–) is an interdisciplinary field focused on the study and implementation of practical aspects environmental protection and safeguard of people's health and safety at occupation.