ISO 45001 Internal Auditor Training Course Any Occupational Health and Safety (OHSMS) Management system specifies processes to continuously improve your OH&S performance and at the same time, comply with legislation. ISO 45001 Internal Auditor Training provides the framework to seamlessly integrate the OHSMS management system with your overall business plan. ISO 45001 Internal Auditor Training Course is an international occupational health and safety management system specification that empowers an organization to control its OH&S risks and improve its performance.