Attrition rate is the number of employees who left divided by the total number of employees, expressed as a percentage. To calculate this rate accurately, you should use the average number of employees in the denominator. This means adding the opening balance and closing balance together and then dividing by 2 to get the average number of employees.
There are two practices being followed by organizations to calculate the attrition rate:
1) Number of exits in the month / (number of employees at the beginning of the month + new joinings) * 100
2) Number of exits in the month / {(number of employees at the beginning + number of employees at the end of the month) / 2} * 100
In both cases, you will find very little difference in the attrition rate. Just for your information, many MNCs and big companies follow formula number 2 to determine their attrition rate.
The attrition rate for a month can be calculated by dividing the headcount at the beginning of the month by the headcount at the end of the month, then multiplying the result by 100. This formula provides a percentage that indicates the rate of employee turnover within that specific month.
Attrition rate can be calculated either quarterly or yearly. It would be better if it is calculated at the year-end, mostly the financial year, so that the company gets a fair idea of how many employees have been disassociated with the organization in the year.
The formula: number of resignations / total number of employees as of the date * 100 will give the attrition rate. This is what we use in our organization.
I have a query - When we talk about attrition in a software company, for example, do we consider the total number of employees to include non-engineering employees, such as staff and salespeople, or do we only take into account engineering employees in the calculation?
Regards,
Pinaki Das
Interra Information Technologies
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