Final answer:
Dysfunctional turnover is the type of turnover that occurs when top performers leave a company and the costs of their departure exceed potential benefits.
Step-by-step explanation:
When top performers leave a company, and the costs of their departure exceed potential benefits, this type of turnover can be described as dysfunctional turnover. Dysfunctional turnover refers to the loss of valuable employees who are high-performers, and their departure negatively impacts the organization. This type of turnover is problematic as it can lead to a decrease in productivity and performance, increased costs for recruitment and training, and the loss of valuable knowledge and skills.