ISO 45001, finalized in 2018, replaces a previous standard, OHSAS 18001, which was developed by auditors as a health and safety complement to quality and environmental standards (ISO 9001 and ISO 14001). ISO 45001 is a conformance standard, intended for use with third-party certification.

This is a voluntary consensus standard. It uses recognized management system principles in order to be compatible with quality and environmental management system standards such as ISO 9001, ISO 14001 and ISO 45001.