Posted By Thos G
Could some enlightened person answer me this.

AIR of 9.92 per 1000 employees and 18 reportable accidents.

Is this AIR high, low, average? for construction?
Thanks
Tom

Posted By Dave Wilson
What's the equation for this guys?

Posted By Ian Waldram
Note that the US AFR definition, widely used by others outside US, is per 200,000 hours. This is pretty near to the annual worked hours of 100 persons - so it's easy to compare hourly rates with people rates if you use the US system.

Also HSE don't quote any data using hours, just rates per 100,000 people. That may be OK for national statistics, but most of us don't know what a 100,000 people organisation looks like - though we can all visualise 100! (and so can the average manager who are the ones we are trying to communicate with).

For that reason (and also because very few organisations nowadays actually record all hours worked, but they do usually know how many people are working for them, expressed as full-time equivalent - FTE), it's a very good good idea to use the rate per 100 people. If you want to compare with published HSE data for UK, or a particular sector, just divide their data by 1000 - you will find most of their figures are around that number anyway, i.e. UK average is a bit less than 1 LTA per 100 workers per year.

Posted By Jay Joshi
There are various accident rates used to compare accident statistics.

The most important factor is to ensure that you use the same multiplying factor as used in the data you are comparing. There is no fixed or standard multiplication factor (MF). The choice can be influenced by either the MF used in the data you are comparing or for the purpose trend analysis/projections, the rates have manageable “numbers”, i.e. not having too many zeros or decimal places!



INCIDENT RATE= TOTAL NUMBER OF ACCIDENTS X 1000/ NUMBER OF PERSONS EMPLOYED
( i.e. accidents per 1000 employees )

Definition:- number of accidents per 1000 employees

A factor of 100,000 is used by HSE for the “AIR” i.e. number of accidents per 100000 employees

Definition:- number of accidents per 100 000 employees



FREQUENCY RATE =TOTAL NUMBER OF ACCIDENTS X 1000000/TOTAL NUMBER OF MAN HOURS WORKED
i.e. number of accidents per 1 000 000 hours worked)

Definition:- number of accidents per 1 000 000 hours worked

(Note:- Some tend to use a multiplication factor of 2000000 as this figure is the hours worked in a year by 1000 employees assuming they work 40 hours per week for 50 weeks in a year)




SEVERITY RATE=TOTAL NUMBER OF DAYS LOST X 1000/TOTAL NUMBER OF MAN HOURS WORKED (i.e. average number of days lost per 1000 hours worked)

Definition:- average number of days lost per 1000 hours worked



MEAN DURATION RATE = TOTAL NUMBER OF DAYS LOST/TOTAL NUMBER OF ACCIDENTS(i.e. average number of days lost per accident)

Definition:- average number of days lost per accident




DURATION RATE=NUMBER OF MAN HOURS WORKED/TOTAL NUMBER OF ACCIDENTS(i.e. average number of man hours between accidents)

Definition:- average number of man hours between accidents

Posted By Alexander Falconer
I am also with both Jay & Alex on this one too.

These are the formulas that I have always utilised as part of my monthly reports irrespective of whom or size of company I have worked for in the past. The formulas are intended to provide a like for like indication for all types and sizes of organisation, and makes it easier for comparison.

Whilst I havent really come across any form of benchmark indicator as to what is considered an acceptable AIR ratio, I do review the guidelines which are listed in the RoSPA & BSC awards application form guidelines. Whilst these both differ, they will at least give some indication as to how you are performing within your specific industry and you can draw your conclusions from that.

Alex