OHSAS 18000 is an international occupational health and safety management system specification. It comprises two parts, 18001 and 18002 and embraces a number of other publications.

For the record, the following other documents, amongst others, were used in the creation process:

BS8800:1996 Guide to occupational health and safety management systems

DNV Standard for Certification of Occupational Health and Safety Management Systems (OHSMS):1997

Technical Report NPR 5001: 1997 Guide to an occupational health and safety management system

Draft LRQA SMS 8800 Health and safety management systems assessment criteria

SGS and ISMOL ISA 2000:1997 Requirements for Safety and Health Management Systems

BVQI SafetyCert: Occupational Safety and Health Management Standard

Draft AS/NZ 4801 Occupational health and safety management systems Specification with guidance for use

Draft BSI PAS 088 Occupational health and safety management systems

UNE 81900 series of pre-standards on the Prevention of occupational risks

Draft NSAI SR 320 Recommendations for an Occupational Health and Safety (OH and S) Management System

OHSAS 18001 is an Occupation Health and Safety Assessment Series for health and safety management systems. It is intended to help organizations to control occupational health and safety risks. It was developed in response to widespread demand for a recognized standard against which to be certified and assessed.