Registration to an Occupational Health and Safety Management System means that a 3rd party, such as SWISO Certification Body has checked that it conforms to the specifications laid out in the document OHSAS 18001. It was developed in response to the need for organizations to meet their health and safety obligations in an efficient manner.

In addition, OHSAS 18001 is designed to be compatible with other management systems standards and specifications such as ISO 9001 (Quality) and ISO 14001 (Environment). They can be integrated seamlessly through SWISO's integrated assessment service. They share many principles so choosing an integrated management system can give excellent value for money.