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Analytics 101: Why People Leave

Source | HCI : By Ankit Poddar

Organizations spend a considerable amount of time, money and effort in hiring the right people. Once the employees are in the system it makes good sense to have the tenure balance the investment cost. However, as any working professional would tell you, the calculation isn’t always that simple. In addition to hiring and training costs, there is also the loss of critical knowledge, impact on customer relationship and many other factors that can’t always be assigned a financial cost. It is thus easy to understand why employee turnover has and will continue to give HR professionals many sleepless nights.

The marriage of attrition and analytics isn’t new. Most organizations have a number of attrition metrics that are reviewed on a monthly basis if not more frequently. How useful are these metrics in providing insight to help tackle the problem? In truth these metrics are agonizingly limited. They might be able to point you in the direction of trouble but rarely do they help provide a solution.

Let us take the top reasons for leaving as an example. In a study carried out by Allen, Bryant and Vardaman, they found that even the strongest correlation is that of 0.25 which isn’t great. What does this tell us? In absolute terms, very little. To dig deeper, it is necessary to understand why people leave.

Inverse Correlation with Turnover

Allen, Bryant & Vardaman (2010)

 

I find the below image useful in helping understand the process that leads to the decision to quit and to understand which metrics may help. Of course, this isn’t all inclusive but gives a pretty good idea of what goes on in the mind of an employee.

Process Perspectives on Turnover

Adapted from Lee & Mitchell, 1994

 

As you can see, there are a number of reasons for why people quit. Any one explanation will only explain what’s happening for a fairly small population. You will find people who love their job but quit anyway. On the other hand, there will be people who hate their job and supervisors but upon comparing with alternatives find that there is nothing better available and decide to stay. Under these circumstances, it becomes extremely difficult to come up with any predictive analysis model that will pass with flying colors when tested for validity.

The good news is that because we deal with the unpredictable nature of human beings, we aren’t extremely hung up on high correlations or high validity. What we are looking for is a model that can help identify the levers that can increase retention. One effective way to come up with a model is to use multivariate regression. Thinking about all the different variables that affect attrition and throwing them into a multivariate regression helps in untangling the effect of these variables. It also helps to understand which variable has the strongest effect on who stays and who leaves.

 

Read On…

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