Measuring Performance

With the aid of the above described, standardized incident reporting and recording system, a variety of relevant information is gathered. This data is received and collected from different sources (like site inspections, information disclosure of financial or human resources department), passed on to the responsible positions in the company (Safety Department) and summarized there. The preparation and conversion of the absolute numbers (simple key figures) into meaningful indicators is done by using the relevant formulas for the corresponding key performance indicators (KPIs). The following overview shows a few relevant indicators for the OHS-performance evaluation.

Simple Key figures   
Days Lost DLRestricted Work InjuriesRWI
Medically treated injuriesMITRestricted work caseRWC
Permanent total disability PTDPermanent partial disabilityPPD
Medical treatment case MTCExposure hoursEH
Hours workedWH
Based on the simple key figures, the following KPIs can be evaluated
Lost time injuriesLTI Fatalities + PTD + PPD + LWC
LTI Frequency RateLTIFLTI x 200.000/Exposure Hours
Total Recordable InjuriesTRIsNumber of (Fatalities + LTI + RWI + MT
Total recordable casesTRCLTI + RWC + MTC
Total Recordable Case FrequencyTRCF(LTIs + RWCs + MTCs) x 1,000,000/Exposure Hours
Injury Frequency RateIFRNumber of injuries * 1,000,000 / hours worked
Fatality Frequency RateFFRFatalities * 1,000,000 / hours worked
Lost Time Injury Frequency RateLTIFRLTIs * 1,000,000 / hours worked
Total Recordable Injury Frequency RateTRIFR(Fatalities + LTIs + RWIs + MTIs) * 1,000,000 / hours worked
Severity RateSR(Days lost to LTIs and RWIs) * 1,000,000 / hours worked
Duration RateDR(Days lost to LTIs and RWIs) / Number of (Fatalities + LTIs + RWIs)
Absentee Rate or ARTotal days lost * 1,000,000 / hours worked
Lost Work Day RateLWDR
Number of PersonnelTotal personnel = hours worked per year / 2000
[2000 hours per year = 50 weeks x 40 hours and is an approximation of an average number of hours per year per person exposed]