
Staff turnover could be costing you £40m a year
Put a number on regrettable turnover. Even at the low estimate of half a salary per leaver, a 10,000-person firm losing 20% a year spends £40m.
This session looked at how to keep the people you have: building a culture people want to stay in, the part line managers play, and how to work out what staff turnover really costs. Host James Marsh of HRreview was joined by Adithi Jagannathan, Charlotte Schaller and Alex Cass of Aon Human Capital Solutions.
Adithi Jagannathan, Charlotte Schaller and Alex Cass, Aon Human Capital Solutions. Hosted by James Marsh, HRreview.
Alex Cass said research estimates the cost of each leaver at 50 to 150% of the role's annual salary. Cass's worked example used 10,000 staff on an average of £40,000 and a 20% regrettable turnover rate. At the low 50% estimate that comes to £40 million a year, and cutting turnover by one percentage point saves £2 million.
The overall figure hides teams where people never leave and teams where they leave fast. Slice the data by length of service, seniority, gender, age, the leader in charge and timing, such as a wave of leavers after bonuses are paid. Then check whether those pockets match high sick leave, low take-up of annual leave or stress-related claims.
Cass runs stay interviews once a year with people across the team, not only direct reports, asking what keeps them at work, what is not working and what would make them leave. With enough trust, people give concrete things you can act on.
Charlotte Schaller said many reasons people leave can be avoided with the right manager: feeling uninspired, wanting more feedback, clearer direction or a path to progress. Review your managers' skills gaps first, using anecdotal evidence, 360 feedback or assessments, before deciding where to invest in training.
Doing well in a current role does not always lead to success as a people manager, because the skills are different. Schaller said many organisations promote on performance data and gut instinct without a clear idea of what high potential means.
Adithi Jagannathan often finds leaders can describe the employee value proposition while staff have no idea what it is: a communication gap more than a definition gap. An EVP should be authentic, hard to copy and ready for the future, and communicated differently to different groups of employees.

Put a number on regrettable turnover. Even at the low estimate of half a salary per leaver, a 10,000-person firm losing 20% a year spends £40m.

Exit interviews ask the right questions too late. Ask your people what would make them leave while they are still here.
Alex Cass's full list of costs to include when calculating turnover, the story of a 400-person firm losing 270 staff a year, and the Q&A on stay interviews.
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