OHSAS 1800:2007 Occupational Health and Safety Management Certification is an international standard which provides a framework to identify, control and decrease the risks associated with health and safety within the workplace. Implementing the standard will send a clear signal to your stakeholders that you view employee’s health and safety as a priority within your organization. BSI cancelled BS OHSAS 18001 to adopt ISO 45001 as BS ISO 45001.