Labor and waste management costs are some of the internal factors affecting an environmental management system (EMS). External factors facing an EMS are legislation, environmental impact and customers.
An EMS is a structured program that helps a company reduce its environmental impact. It also helps a company operate in an efficient manner. The International Organization for Standardization's (ISO) standard, 140001 is a criteria that guides an organization's environmental program through five phases: policy setup, planning, checking and correction, implementation and management review. The checking and correction phase and management review provide continuous evaluation and help companies manage internal and external factors