ISO 45001

ISO 45001 is an international standard that specifies requirements for an occupational health and safety (OH&S) management system. It provides a structured framework organizations can use to identify and control OH&S risks, reduce the likelihood of work-related injury and ill health, and integrate safety considerations into day-to-day operations.

The standard is applicable to organizations of any size or industry, including manufacturing and other industrial operations with significant shop floor, field, or maintenance activities. It follows a management system approach similar to ISO 9001 and ISO 14001, using a high-level structure based on the Plan-Do-Check-Act (PDCA) cycle.

Key elements in industrial and manufacturing environments

In regulated and industrial settings, ISO 45001 commonly involves:

• Establishing an OH&S policy and defined responsibilities for safety across all levels of the organization
• Systematic identification of hazards and assessment of OH&S risks related to production lines, maintenance work, materials handling, and facility operations
• Operational controls, work instructions, and permitting processes for higher-risk activities such as confined space entry, lockout/tagout, and hot work
• Documented procedures, records, and change management related to equipment, processes, and work environments
• Monitoring, incident reporting, investigation, and corrective actions with traceable evidence
• Worker participation, consultation, and training, including contractors and temporary workers
• Periodic audits, management review, and continual improvement of the OH&S management system

Although ISO 45001 can be used on its own, it is often integrated with other management systems such as ISO 9001 (quality) and ISO 14001 (environment) so that safety requirements are aligned with production, quality, and environmental controls.

Relationship to OHSAS 18001

ISO 45001 replaced the older OHSAS 18001 specification in many organizations. While OHSAS 18001 was widely used, it was not an ISO standard. ISO 45001 introduced a consistent high-level structure with other ISO management system standards and placed stronger emphasis on organizational context, leadership, and worker participation.

Common confusion

• ISO 45001 vs. ISO 9001: ISO 45001 addresses occupational health and safety risks. ISO 9001 focuses on quality management and meeting customer and regulatory requirements for products and services.
• ISO 45001 vs. ISO 14001: ISO 45001 covers health and safety for workers and others under the organization’s control. ISO 14001 focuses on environmental management and impacts on the external environment.
• ISO 45001 vs. regulatory requirements: ISO 45001 is a voluntary international standard. It does not replace applicable workplace safety laws or regulations, but can be used to structure how an organization manages and documents its OH&S processes.

Context for industrial systems and data

In OT/IT and manufacturing systems, ISO 45001 requirements often intersect with:

• Recording and analyzing incident, near-miss, and risk assessment data in EHS, MES, or quality systems
• Managing controlled documents such as safety procedures, lockout/tagout instructions, and job safety analyses
• Linking change management in maintenance, engineering, and process control systems to OH&S risk assessments
• Providing traceable training records and competency evidence for operators, technicians, and contractors

Organizations may use ISO 45001 as a reference framework when designing workflows, data capture, and reporting capabilities across their industrial IT and OT landscape.