The direct answer
ISO 9001 addresses quality management, ISO 14001 addresses environmental management and ISO 45001 addresses occupational health and safety management. Start with the business risk or requirement you need to manage.
When quality is the priority
Explore ISO 9001 when you need more consistent products or services, clearer processes and a structured approach to customer requirements.
When environmental impact is the priority
Explore ISO 14001 when you need to identify environmental impacts, manage related controls and review environmental performance.
When workplace risk is the priority
Explore ISO 45001 when a structured approach to hazards, worker participation and occupational health and safety performance is needed.
When integration makes sense
If multiple systems are relevant, a coordinated implementation can share compatible processes such as document control and management review. Retain the controls specific to each standard and assess team capacity before setting the scope.
Sources & editorial information
Prepared by the Standards Advisory editorial team. This guide provides general information and does not reproduce the standards or replace a review of your specific scope.