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publish: incident-rate formulas reference v1
191656e verified
id,name,full_name,formula,multiplier,output_unit,jurisdiction,authority,source,source_url
trir,TRIR,OSHA Total Recordable Incident Rate,TRIR = (recordable cases × 200000) / total hours worked,200000,cases per 100 full-time employees per year,United States,OSHA,29 CFR 1904,https://www.osha.gov/recordkeeping
ltifr,LTIFR,Lost Time Injury Frequency Rate,LTIFR = (LTI cases × 1000000) / total hours worked,1000000,lost-time injuries per million hours,International (ILO/UK/GCC/AU),"ILO, UK HSE",ILO 16th ICLS Resolution III,https://www.ilo.org/global/statistics-and-databases/lang--en/index.htm
dart,DART,"Days Away, Restricted, or Transferred Rate",DART = (DART cases × 200000) / total hours worked,200000,DART cases per 100 full-time employees per year,United States,OSHA,29 CFR 1904.7,https://www.osha.gov/recordkeeping/RKforms.html
afr,AFR,Accident Frequency Rate,AFR = (accidents × 1000000) / total hours worked,1000000,accidents per million hours,"United Kingdom, GCC, generic",UK HSE,HSE Methods Statement,https://www.hse.gov.uk/statistics/sources.htm
severity_rate,Severity Rate,Severity Rate (days lost per million hours),Severity = (days lost × 1000000) / total hours worked,1000000,days lost per million hours,International (ILO),ILO,ILO 16th ICLS Resolution III,https://www.ilo.org/global/statistics-and-databases/lang--en/index.htm
trifr,TRIFR,Total Recordable Injury Frequency Rate,TRIFR = (recordable injuries × 1000000) / total hours worked,1000000,recordable injuries per million hours,"Australia, NZ, IOGP global oil & gas","Safe Work Australia, IOGP",Safe Work Australia WHS Code; IOGP Safety Performance Indicators,https://www.iogp.org/bookstore/product/iogp-report-2023s-safety-performance-indicators-2022-data/
ltir,LTIR,Lost Time Incident Rate (OSHA basis),LTIR = (LTI cases × 200000) / total hours worked,200000,LTI per 100 FTE per year,United States,OSHA,29 CFR 1904,https://www.osha.gov/recordkeeping