Final answer:
Stress usually affects functional turnover in the workplace as it can lead to burnout and voluntary departure of competent and productive employees.
Step-by-step explanation:
Stress usually affects functional turnover in the workplace. Functional turnover refers to the voluntary departure of employees who are competent and productive in their roles. Stress can lead to burnout, which is a sense of emotional exhaustion and cynicism in relation to one's job. This emotional exhaustion can eventually result in employees deciding to leave their job, leading to functional turnover.