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Compare ISO 14001 and OHSAS 18001

ISO 14001 is an Environmental Management System (EMS) which provides a structure for measuring and improving an organization's environmental impact.

OHSAS 18001 is an Occupational Health and Safety Management System (OHSMS) which provides a system for measuring and improving an organization's health and safety impact.

When you compare ISO 14000 & 18000, you will see that they are very similar to each other and share these elements:

  • Policy
  • Targets & Objectives
  • Roles & Responsibilities
  • Training
  • Supplier Control / Purchasing
  • Document Control
  • Operational Control
  • Calibration
  • Corrective and Preventive Action
  • Records
  • Auditing
  • Management Review

The main difference between ISO 14001 and OHSAS 18001 is that:

  • ISO 14001 focuses on managing your organization's impact on the external environment, to reduce pollution and comply with regulations
  • OHSAS 18001 focuses on managing your organization's internal environment to ensure a safe and healthy workplace.

Structurally, the two standards are the same and the requirements are very similar. Consequently, the processes and documentation needed to implement and certify to ISO 14001 and OHSAS 18001 are essentially the same. Only the intent and focus are different.

Download the ISO 14001/OHSAS 18001 Comparison Table

Compare ISO 14001 to OHSAS 18001: The following table provides a direct clause-by-cause comparison of OHSAS 18001 & ISO 14001:

OHSAS 18001:2007 Clause ISO 14001:2004 Clause
4.1 General Requirements 4.1 General Requirements
4.2 OH&S Policy 4.2 Environmental Policy
4.3 Planning 4.3 Planning
4.3.1 Hazard Identification, Risk Assessment, & Determining Controls 4.3.1 Environmental Aspects
4.3.2 Legal and Other Requirements 4.3.2 Legal and Other Requirements
4.3.3 Objectives and Programs 4.3.3 Objectives, Targets and Program(s)
4.4 Implementation and Operation 4.4 Implementation and Operation
4.4.1 Resources, Roles, Responsibility, Accountability and Authority 4.4.1 Resources, Roles, Responsibility and Authority
4.4.2 Competence, Training and Awareness 4.4.2 Competence, Training and Awareness
4.4.3 Communication, Participation, and Consultation NA
4.4.3.1 Communication 4.4.3 Communication
4.4.3.2 Participation and Consultation NA
4.4.4 Documentation 4.4.4 Documentation
4.4.5 Control of Documents 4.4.5 Control of Documents
4.4.6 Operational Control 4.4.6 Operational Control
4.4.7 Emergency Preparedness and Response 4.4.7 Emergency Preparedness and Response
4.5 Checking 4.5 Checking
4.5.1 Performance Measurement and Monitoring 4.5.1 Monitoring and Measurement
4.5.2 Evaluation of Compliance 4.5.2 Evaluation of Compliance
4.5.3 Incident Investigation, Nonconformity, Corrective Action and Preventive Action NA
4.5.3.1 Incident Investigation NA
4.5.3.2 Nonconformity, Corrective and Preventive Action 4.5.3 Nonconformity, Corrective and Preventive Action
4.5.4 Control of Records 4.5.4 Control of Records
4.5.5 Internal Audit 4.5.5 Internal Audit
4.6 Management Review 4.6 Management Review

The OHSMS and the EMS can effectively be combined in one management system where the common clauses and procedures are shared. We have considered this when creating the documentation to simplify the implementation for an organization.

Rather than have parallel (duplicate) Manuals and other Documentation we note where the user can just incorporate the OH&S and EMS requirements to the manual, procedures and instructions.

ISO 14001 and OHSAS 18001 as a combined management system

We offer six versions of the Documentation Package to simplify the process for organizations that already have other management systems (ISO 9001, ISO 14001, etc.) in place or want to deal with more than one standard at a time.

Learn more about which version is best for you.