ISO 45001 is an international standard that specifies requirements for an occupational health and safety management system (OHSMS). This standard was developed by the International Organization for Standardization (ISO). ISO is the world’s largest developer of voluntary International Standards. ISO comprises of members from over 160 countries, one member per country, with a Central Secretariat in Geneva, Switzerland, that coordinates the work of the ISO members. The most recent version of this standard is ISO 45001:2018.