The document discusses the benefits and disadvantages of moving from an ILO OHS 2001 health and safety management system to a BS OHSAS 18001 system. Some potential advantages of switching to the BS OHSAS 18001 system include easier integration with other ISO standards, improved publicity and customer perception, and the availability of external registration and assessment. Potential disadvantages include the regulator being more familiar with the previous ILO OHS 2001 standard and increased costs associated with changing systems and external registration. The document also provides examples of health and safety practitioner roles in a medium-sized organization such as developing policies, advising on risk assessments, delivering training, and investigating accidents.