Occupational Illness Frequency Rate (OIFR) : The number of cases of occupational illness per million working hours. This parameter is reportable for employees only
The Association of Petrochemicals Producers in Europe (APPE), The European petrochemical industry, Glossary of Terms on Chemical Safety for Use in IPCS Publications, van Nieuwenhuyse, Brussels 2006. http://www.petrochemistry.eu/glossary.html, (Petrochem Ind - Brit) {473}