Activities and Achievements of the WGOIA: The WGOIA identified priority issues related to infectious agents as: "Fitness for work", "Risk assessment" and "Health surveillance" with the priority groups of workers being health care workers, occupational travellers, and all workers exposed to global epidemics. An ICOH guide for preparing an HIV workplace policy has been finalised with the Ethics task group and guidelines for health care workers and for travelling for work are being completed. Prioritising Occupational Infectious Diseases: As any infectious agent affecting humans can potentially cause an occupational disease and the range of affected occupations constantly increases, it is necessary to prioritise the infectious agents and occupational groups. The public health approach was used by the WGOIA and based on best available evidence of prevalence of exposure to infection, the morbidity and mortality of specific diseases, the effect on productivity and absenteeism in the workplace, stakeholder concern and the availability and cost-effectiveness of interventions. In addition to the priorities addressed by 2012, the WGOIA will target zoonoses and agricultural workers and evaluate training tools for occupational health professionals.