OHSAS in its full form stands for Occupational Health and Safety Assessment Series. It is an internationally recognised assessment specification for occupational health and safety management systems, and was set up to through management help organisations control occupational health and safety risks, reduce accidents to promote healty and safe working environment.
Differing from ISO 14001, OHSAS 18001 is not established by one organization. It's the result of a collaborative effort between international certification bodies, standardizing organisations, and specialist consultantancies and was published in 1999 for the first time. Based on the PDCA (Plan-do-check-act)-model, OHSAS 18001 has the same basic structure as other international management system standards such as ISO 14001. It can also be intergrated with ISO 9001 and ISO 14001, to help the organizations fulfill the obligations on health and safety.
OHSAS 18001 requires organization to identify occupational health and safety requirements, establish policy, objectives and targets, determine significant occupational health and safety aspects, plan and control its operation, implement corrective actions and conduct management review.
Getting the renowned international standard enables the guarantee of both quality and reliability of the organization.