The EMS documentation needs not actual contain all operating procedures, instructions, or similar documents but can point users to where the information may be found. The related information can include internal operating procedures, internal standards, process information, work instructions, site emergency plans, and so on. The Annex to ISO 14001 points out that the documentation should be detailed enough to describe the EMS. It can be integrated and shared with other information systems within the organization.

Often, organizations create an EMS manual that provides the basics, such as the environmental policies, objectives, targets, key roles, and major responsibilities. The manual references related documentation and other aspects of the organization's management system.

The tiers in the above picture are presented as a broad-based triangle. The environmental manual would generally contain the basic policies, and other general information about the EMS program. The operating procedures describe the overall flow of activities. Work instructions are more detailed activity-specific guidelines. Records include all documentation needed to demonstrate compliance with the EMS and its requirements.

ISO 14001 implementation does not necessarily require reams of additional documentation, not does it require documenting everything indiscriminately. It does require, however, that an organization documents those aspects of its operations that demonstrate to an auditor that the system is in place and functioning effectively.