Many national occupational hygiene organisations feel that occupational hygiene is an international issue, not just the business and interest of just a few developed countries. In fact, globalisation highlights this situation even more now. There is much to be gained by sharing knowledge internationally, particularly when some regulatory systems cross national borders, such as EU REACH (European Union Regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals), and Global Harmonisation Scheme (GHS) for labelling.
A key element of interest for many national organisations is the recognition of its national accreditation scheme. IOHA is particularly sensitive to local academic, legislative and cultural conditions. The IOHA National Accreditation Recognition (NAR) Committee officially recognizes national organisation certification schemes which comply with the Model Process accreditation scheme.