ISO 45001:2018 defines Management system as “set of interrelated or interacting elements of an organization to establish policies and objectives and processes to achieve those objectives”.
A management system can address a single discipline or several disciplines. For example a management system can focuses on quality which is known as the quality management system, or it can also focus on environment and thus is known as environmental management system. In the case of ISO 45001, it is the occupational health and safety management system.
The system constituents incorporates the company’s organizational structure, roles, responsibilities and authorities. Moreover management system also comprises of planning part for operations, operation itself, evaluation of operational performance and of course the ultimate objective of management system is improvement.
See list of documents required by management system for ISO 45001:2018 and OHSAS 18001:2007
The scope of a management system may incorporate the complete or whole organization, particular and specified functions of the organization, particular and specified organization’s sections, or scope can be a singular or multiple functions around a group of organizations.