- HSE
- About you
- Web Communities
- Discussions
- View Discussion

Rose 7 years ago
Reply

Hi I want to start monitoring the accident frequency rate for our company. I have been given a couple of different ways to do this, usually by multiplying by 100,000. But somehow this confuses me. The book I have been using which is a NEBOSH book states a formula (total number of accidents/number of persons employed x 1000)Simple, but is it enough?. Do I need to have labour hours in here? Can anyone give me a simple formula to work this out?

Regards

Regards

Ian Simms 7 years ago
Reply

Lynette,

As a Client we expect our contractors to report AFR to us using the

following formula:

Accident frequency rate- The overall accident / incident statistics for the

Contractor, but excluding any shareholders of the Contractor. Where the

Contractor is not a holding company these statistics shall include the

statistics for the holding company and all subsidiary companies. Where the

Contractor is a holding company these statistics shall include the

Contractor and all subsidiary companies, all as defined by s.736 of the

Companies Act 1985.

The accident frequency rate will be calculated as follows:

NRA / ANE x 100,000

Where:

Â· NRA is the number of reportable accidents in the previous 12 months.

Â· the number of reportable accidents is defined as the total number of

RIDDOR accidents (as defined by the Health and Safety at Work Act), across

all the Contractorâ??s customers [including its holding company and/or

subsidiaries]; and.

Â· â??In the previous 12 monthsâ?? shall mean the previous 12 month period

relevant to each current month.

Â· ANE is the average number of employees over the previous 12 months

which shall take into account the following:

- Where subcontractors provide part of the service the number of

subcontract workers should be included.

- Head office and management staff should be included.

- The Contractor shall take a reasonable view on the use of

part-time staff and sub-contract workers when calculating the

number of employees.

Regards,

Ian Simms

***********************************************************************

Royal Mail Group Limited registered in England and Wales registered number

4138203 registered office 3rd Floor, 100 Victoria Embankment, London, EC4Y

0HQ

This email and any attachments are confidential and intended for the

addressee only. If you are not the named recipient, you must not use,

disclose, reproduce, copy or distribute the contents of this communication.

If you have received this in error, please contact the sender and then

delete this email from your system.

**********************************************************************

As a Client we expect our contractors to report AFR to us using the

following formula:

Accident frequency rate- The overall accident / incident statistics for the

Contractor, but excluding any shareholders of the Contractor. Where the

Contractor is not a holding company these statistics shall include the

statistics for the holding company and all subsidiary companies. Where the

Contractor is a holding company these statistics shall include the

Contractor and all subsidiary companies, all as defined by s.736 of the

Companies Act 1985.

The accident frequency rate will be calculated as follows:

NRA / ANE x 100,000

Where:

Â· NRA is the number of reportable accidents in the previous 12 months.

Â· the number of reportable accidents is defined as the total number of

RIDDOR accidents (as defined by the Health and Safety at Work Act), across

all the Contractorâ??s customers [including its holding company and/or

subsidiaries]; and.

Â· â??In the previous 12 monthsâ?? shall mean the previous 12 month period

relevant to each current month.

Â· ANE is the average number of employees over the previous 12 months

which shall take into account the following:

- Where subcontractors provide part of the service the number of

subcontract workers should be included.

- Head office and management staff should be included.

- The Contractor shall take a reasonable view on the use of

part-time staff and sub-contract workers when calculating the

number of employees.

Regards,

Ian Simms

***********************************************************************

Royal Mail Group Limited registered in England and Wales registered number

4138203 registered office 3rd Floor, 100 Victoria Embankment, London, EC4Y

0HQ

This email and any attachments are confidential and intended for the

addressee only. If you are not the named recipient, you must not use,

disclose, reproduce, copy or distribute the contents of this communication.

If you have received this in error, please contact the sender and then

delete this email from your system.

**********************************************************************

Rohit 7 years ago
Reply

Average number of personnel, this varies drastically. sometimes we have 300 personnel involved for 90 days followed by 110 for another 2 months in this was what is the acurate way to assess Average Manpower ?

Please advise on above.

Regards

Rohit

Please advise on above.

Regards

Rohit

Essam 7 years ago
Reply

I'm using the following Formula

AFR=Number of LTA* 1,000,000 / Total Mna-hours worked

AFR=Number of LTA* 1,000,000 / Total Mna-hours worked

Keith greenwood 7 years ago
Reply

Hi

There are many different multipliers used to calculate the accident

frequency rate

To determine the accident frequency rate, I use the number of Lost time

incidents or (recordable cases) x 100,000/the total number of man hours

worked.

This approximately equates to the number of hours an individual works in his

life time, based on a 40 hour week.

As a result the safety selling point becomes a personal factor and not a

statistic, since the frequency rate calculated is also the number of lost

time accidents, an individual is likely to have in his working life time.

As an aside, 200,000 hours can be use to the same effect if the working week

is extended to 80 hours

Regards

Keith

There are many different multipliers used to calculate the accident

frequency rate

To determine the accident frequency rate, I use the number of Lost time

incidents or (recordable cases) x 100,000/the total number of man hours

worked.

This approximately equates to the number of hours an individual works in his

life time, based on a 40 hour week.

As a result the safety selling point becomes a personal factor and not a

statistic, since the frequency rate calculated is also the number of lost

time accidents, an individual is likely to have in his working life time.

As an aside, 200,000 hours can be use to the same effect if the working week

is extended to 80 hours

Regards

Keith

kiran 6 years ago
Reply

Dear Sir,

Please share Safety Activities & new Safety & EHS related ideas in different organisation.

Truely Yours.

Kiran Karande.

Essam 7 years ago
Reply

Greetings

Accident Frequency Rate

This can be calculated for any time period (month, year):

No. of lost-time accidents x 1000,000 / No. of man hours worked

This gives a measure of the no. of accidents per 1000,000 hours worked.

And you should also monitor the sevirity rate

Severity Rate

Total no. of days lost x 1,000 / Total no. of man-hours worked

This measures average no. of days lost per 1000 hours worked

Regards

Accident Frequency Rate

This can be calculated for any time period (month, year):

No. of lost-time accidents x 1000,000 / No. of man hours worked

This gives a measure of the no. of accidents per 1000,000 hours worked.

And you should also monitor the sevirity rate

Severity Rate

Total no. of days lost x 1,000 / Total no. of man-hours worked

This measures average no. of days lost per 1000 hours worked

Regards

ESS 7 years ago
Reply

Lynette

The formula you have found is for Incidence rate rather than frequency rate which is where the time element comes in.

The HSE have described both of these in their publication HSG 65 Successful Health and Safety Management, Appendix 6.

Accident Frequency Rate is [(Number of injuries in the period)/(Total hours worked during the period)] x 1,000,000. ie the number of injuries per million hours worked.

Annual Injury Incidence Rate is [Number of reportable injuries in financial year)/(average number employed during the year)] x 100,000. ie the number of injuries per 100,000 workers.

A lot of larger companies have their own way of allowing for numbers of employees to be included and hours worked to make it representative. These methods are devised to suit their own circumstances, which may include for instance an allowance for the average time a delivery driver is on site.

It also depends what you are comparing it with. If it is just for internal use it doesn't really matter, but needs to be the same each year. If you are going to compare figures outside your organisation eg with a trade body, it is best to follow common guidelines otherwise you are comparing apples and pears.

Hope that helps

DT

The formula you have found is for Incidence rate rather than frequency rate which is where the time element comes in.

The HSE have described both of these in their publication HSG 65 Successful Health and Safety Management, Appendix 6.

Accident Frequency Rate is [(Number of injuries in the period)/(Total hours worked during the period)] x 1,000,000. ie the number of injuries per million hours worked.

Annual Injury Incidence Rate is [Number of reportable injuries in financial year)/(average number employed during the year)] x 100,000. ie the number of injuries per 100,000 workers.

A lot of larger companies have their own way of allowing for numbers of employees to be included and hours worked to make it representative. These methods are devised to suit their own circumstances, which may include for instance an allowance for the average time a delivery driver is on site.

It also depends what you are comparing it with. If it is just for internal use it doesn't really matter, but needs to be the same each year. If you are going to compare figures outside your organisation eg with a trade body, it is best to follow common guidelines otherwise you are comparing apples and pears.

Hope that helps

DT

Steve 7 years ago
Reply

I am following the formulars for AIRS & AFRs and they seem pritty High for last year, ie 3 reported out of 375 employees, based on 720000 hrs total. I get a AIR or 800 and AFR of 4.1 . Am I right or have I gone off track and what do I do with these figures in the past they have been 1.1's ect

AFC1903td 6 years ago
Reply

Steve,

You are correct in your calculations. I am just back from the US after having worked there for 5 years and hav ebeen used ot the OSHA reporting structure so to come back and us the Uk method and start seeing numbers in the hundereds and thousands is misleading.

Regards,

Greig.

David Bird 6 years ago
Reply

Base it on 100,000hrs (which is what anybody would approximately work
in their life) this helps in explaining the figures to employees in a
more friendly/ understandable manner.

You can either do it weekly,
monthly or whatever.

The formula is:

(Number of accidents x 100,000 hrs) / hrs worked. your example 60
employees would work 140400 hrs in the year (45hrs per person per
week) and you have 5 reportable accidents.

(5 x 100,000) / 140400 = 3.56. your reportable accident rate for
the year based on 100,000 hrs worked is 3.56, which means that an
employee working in your company is likely to have 3.56 reportable
accidents during their life if they worked there all their life.

To improve readability, some repeated lines have been removed. Show the removed lines.

HSE aims to reduce work-related death, injury and ill health.

- Shqip / Albanian
- / Arabic
- / Bengali
- Balgarski / Bulgarian
- / Chinese
- Čeština / Czech
- / Farsi
- Français / French
- Ελληνικά / Greek
- / Gujarati
- / Hindi
- Italiano / Italian
- / Kurdish
- Latviešu / Latvian
- Lietuviskai / Lithuanian
- / Pashto
- Polski / Polish
- Português / Portuguese
- / Punjabi
- Românâ / Romanian
- Русский / Russian
- Slovensky / Slovak
- Español / Spanish
- Tagalog / Tagalog
- / Tamil
- ไทย / Thai
- Türçke / Turkish
- Українська / Ukrainian
- / Urdu
- Cymraeg / Welsh leaflets