Anyone using multiple management system standards alongside each other has undoubtedly noticed that the requirements from that standard are similar but not entirely the same.
The ISO has also noticed this and has therefore developed the High Level Structure: a so-called 'plug-in model'. The basis (HLS) with core requirements is expanded with 'modules' for, for example, environmental, quality or health and safety management with the corresponding requirements. Sector standards or guidelines can also be 'plugged in'. All this with the aim of creating more overview and coherence.
The HLS structure itself is no reason to make changes to an existing management system. It is primarily about new or changing requirements in the standard. Everything therefore starts with a 'gap analysis' compared to the current standard. Depending on how the organization has set up the system, more or less will have to be supplemented or changed. In a set-up that follows the primary process, fewer changes are expected to be required compared to a system based on the chapters or elements of the current standard.
Based on the HLS, the ISO management systems standards are set up according to a fixed classification. Another chapter classification for the management system does not mean that the structure of the management system itself must also be changed. It is important for certification that it is clear where or how the requirements from the new standard have been met.