Attrition

Attrition is reducing headcount by not hiring replacements when people quit.

Definition

According to Managing Quality by Foster (6th edition),

Attrition. Reducing headcount by not hiring replacements when people quit.

According to the HRBoK Guide,

Attrition. Reduction, decrease in numbers of employees. The number of employees who leave the organization for any reason: resignation, termination, end of agreement, retirement, sickness, or death.