Lost-time injury frequency rate

Lost time injury frequency rate converted to 3 days ... 

Lost time accidents the lost time injuries frequency rate for employees in 1999 was unchanged from 1998, at 4 per million hours worked. The target figure is 3. The equivalent rate for contractors was 5.5. 

LTI-rate - lost time injury frequency rate is defined as the number of lost-time injuries per one million hours of work. A lost-time injury is an injury resulting from an accident at work, where the injured person does not return to work on the next shift (Kjell6n, 2000)... 

The lost time injury frequency rate (LTIFR) is the most commonly used indicator of HSE performance, and it is defined as the number of lost time injuries per one million hours of work. A lost time injury is an injury due to an accident at work, where the injured person does not return to work on the next shift. However, LTIFR has some deficiencies as a safety performance indicator. It is insensitive to the severity of the injuries, it is possible to manipulate the registration and classification of injuries, use of alternative job (i.e. restricted work), and for small companies LTIFR is fluctuating and sensitive to changes (Kjellen 2000). 

This case provides relatively little support for Worksafe s claims. There was a dramatic drop in the total number of injuries and total injury costs, but this was largely a consequence of the big cut in the workforce. Most of the safety data presented in the study do not take account of this reduction in employee numbers and so are essentially uninterpretable. The one exception is the lost-time injury frequency rate which does show a decline. The new technology played a part in this decline since it is inherently safer than the old. Presumably, attention to OHS also played a part. Finally, it must be stressed that the very substantial increase in productivity which the mill has experienced has nothing to do with improved safety and everything to do with the state-of-the-art technology installed. Any suggestion that the productivity gains at the plant were due to a focus on health and safety would be entirely fallacious. 

Some of the data which apparently support the productivity claim relate to NSW coal mines over the decade of the 1980s and into the 1990s. Figure 10.1, which presents the data relied on by Mathews (1993, p. 48), shows that during the period 1982-1989 the lost-time injury frequency rate, i.e. the number of lost-time injuries per million hours worked, went steadily down while productivity went steadily upwards. 

Figures 10.2 and 10.3 show that from 1972 to 1992 the L i tFR (lost-time injury frequency rate) and productivity (measured in terms of output of saleable tonnes of coal per employee per year) followed unrelated trajectories.

Figure 10.2 Lost-time injury frequency rates for underground and all NSW coal mines...

The preceding analysis raises the question of just how safety performance is to be measured. Lost-time injury frequency rates are entirely unsatisfactory for at least three reasons. First, as has already... 

Injury experience from workplace accidents can be foimd in mar official pirblica-tions. For a fuller pictirre, the average lost time injury frequency rate and the drrration rate for the injttries need to be cortsidered. You can usually obtain more information from yotu occupational health and safety authority. 

Establishing lost-time injury frequency rate for an industry... 

Figure 3.3 Developments of the lost-time injury frequency rate at an aluminium plant after the introduction of a formal SHE management system. The lost-time injury frequency rate (LTI-rate) is defined as the number of injuries resulting in absence from work per one million hours of work.

Figure 16.1 presents an overview of different SHE performance indicators. This overview is based on the framework for accident analysis in Chapter 6. Loss-based SHE performance indicators will be our starting point. Among these we find the most commonly used indicator, the lost-time injury frequency rate. We proceed by reviewing process-based indicators, similar to those developed in the fertiliser-plant case in Chapter 4. Finally, we will look into indicators relating to causal factors, i.e. indicators based on information about the organisation and SHE management system. 

Figure 17.1 Control chart showing the development of the lost-time injury frequency rate for a steel mill for ten consecutive periods. UCL=Upper Control Limit LCL=Lower Control Limit.

LTI-rate Lost-time injury frequency rate, i.e. the number of lost-time injuries at work per one million hours of work. 

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