generally refers to a gradual, natural reduction in numbers—usually of people—often occurring because those who leave are not replaced . In a business context, it is most commonly applied to employees or customers, but it can also refer to the erosion of strength in military or social science contexts. Employee Attrition
In Human Resources, attrition is the rate at which employees leave an organization due to resignation, retirement, or position elimination. Unlike "turnover," where a departed employee is typically replaced, attrition often results in a permanent reduction in headcount.
Attrition Definition, Types, Causes & Mitigation Tips - SHRM
