The quiet cost of promoting your best performer.

It feels obvious. Sarah is your top biller. The team respects her. There's an opening for a manager. Promote Sarah.

Six months later, Sarah is unhappy, her old numbers are gone, and two of her direct reports are interviewing elsewhere.

The issue isn't Sarah. The issue is that we treat management as a reward for great individual work, instead of a different job that requires different training.

In our SME programmes we see this pattern almost weekly. The fix isn't to stop promoting top performers — it's to stop promoting them without support.

Three practical moves:

• Make management an explicit choice, not the only growth path. Senior individual contributor tracks matter.

• Train before, not after. Give new managers a 4–6 week runway with coaching before they have a team.

• Measure the right thing. New managers should be judged on team outcomes within six months, not on their old individual metrics.

The best performer rarely becomes the best manager by accident. They become one by design.