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Measure and Evaluate

 The following provide some simple ideas on how workplace health and safety might be assessed:

Total Injury Rates – Recordable (TIR), i.e. total injuries/ total hours worked x 200,000. This formula is used by Operational Health and Safety (OSH) in the United States; it measures injuries that generally require medical treatment beyond fi rst aid, and must be recorded in an organisation’s injury log. TIR includes injuries resulting in lost time from work and also those involving no lost time.

Time Lost Due to Accidents or Injuries (LTI), i.e. the number of man days lost due to accidents or injury at work or the total number of days lost due to injury per year/total hours worked per year. This measures time lost due to accidents and injuries at work (commonly known as LTIs). This may provide input into any analysis associated with an organisation’s health and safety programme. Some organisations publicise these fi gures widely as part of an awareness strategy for improving individual care in the workplace.

Worker’s Compensation Claims Cost, i.e. the total value of claims per period as a percentage of total wages. This provides a measure of worker compensation claims, which may be an indicator of other employee-related issues such as satisfaction, morale, health and safety programme effectiveness and overwork. The measure could be segmented to represent, among other things, role types of employees, length of employment or age.

Occupational Health and Safety (OHS) Assessment, i.e.:

  • accidents – number of
  • time lost due to accidents or injuries (LTIs)
  • safety audits - number of
  • number of disabling injuries, or
  • number of hours worked without disabling injury.

This is a multi-dimensional assessment of OHS performance and consists of a battery of measures.

Cost of Safety, i.e. cost of prevention + cost of failure (i.e. accidents and ill health). These costs will be broadly determined by the safety standards and the management strategy implemented within an organisation. As safety standards within the organisation rise, the cost of prevention increases to cover the additional cost of the management, physical and HR-related controls required to achieve the higher standards. Ideally, these increased costs should be counterbalanced by reduced costs related to accidents and illness, as a result of the higher standards and resulting improvements in safety performance.

Safety Audits – Number of, i.e. the number of hazard inspections or safety programme audits per year, or the number of hazard inspections or safety programme audits completed versus numbers planned per year. This a measure of the number of safety related audits completed, and may be useful in the analysis of overall OHS assessments.



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