Abstract Occupational Health Assessment Series (OHSAS) 18001 was recognized internationally as an auditable system to manage safety and health risks at workplaces since 1999. The purpose of the study was to assess the impact of OSHAS 18001 management system on safety performance at How Mine, a gold mining company in Zimbabwe. The objectives of the study were to analyze the occupational accidents before and after the adoption of OHSAS 18001 and to evaluate occupational injury frequency rate a...