ISO 45001 standard replaced OHSAS 18001 and was developed to integrate more easily with other ISO standards such as 14001 and 9001.
The standard has been developed to provide a framework for an organisation to manage risks and opportunities to help prevent ill health and work-related injuries. All of its requirements are designed to be integrated into an organisation's systems and processes.
Every employer is under a statutory duty to arrange for a "competent person" to assess all risks arising at the workplace, or created by work activities.