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Clarification on Attrition Formula
Human Resources » Attrition and Retention

Chrm Message From: poojasharma Total Posts: 55 Join Date: 14/08/2006
Rank: Manager Post Date: 08/09/2008 22:10:41 Points: 275 Location: United States


I have been reading that the formula for calculating Attrition Rate is : [ (No. of Attrition) * 100 ] / Average Strength

I need some clarification as to what constitutes the Average Strength for an organization.

Awaiting for response



Chrm Message From: kaushik Total Posts: 61 Join Date: 14/08/2006  
Rank: Manager Post Date: 08/09/2008 22:12:16 Points: 305 Location: United States

Hi pooja

I guess average strength comprises of on board employee's + new joinee's in the period in which you are calculating attrition.



Chrm Message From: Srihari Raju Total Posts: 4 Join Date: 14/08/2006  
Rank: Beginner Post Date: 20/06/2009 10:35:01 Points: 20 Location: United States

Hi Pooja,

We are also practicing same formula in my organization. By the way Strengh is opening strength of employees + closing strength of employees/2




Chrm Message From: aishu.jegan Total Posts: 2 Join Date: 14/08/2006  
Rank: Beginner Post Date: 11/11/2010 12:38:37 Points: 10 Location: United States

Hi Everyone,

Yes I do agree with Mr.Srihari for the formula that he has given for the calculation of average strength. I have also interned in a company where my focus was on calculating the level of attrition.

Chrm Message From: sonal chouhan Total Posts: 7 Join Date: 14/08/2006  
Rank: Beginner Post Date: 04/01/2011 04:14:03 Points: 35 Location: United States

Dear All,

can you please confirm if this is most used formula of attrition in the industry, there are multiple formulae doing the rounds, and we need to finalise the formula that is most common in the industry.

How many of us are using the formula of :-

no. of resignation/avg manpower of the month*(12/no of month for which we are calcualting)*100,

where avg manpower is (Opening Bal+Closing Bal)/2

Pl do revert,


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