BREAK IN SERVICE — The time when an employee is no longer on the payroll of an agency. (In computing creditable service for benefits, e.g., leave accrual and reduction in force retention, a separation of 1, 2, or 3 calendar days is not considered to be a break in service; a separation of 4 or more calendar days is considered to be a break in service and the days of separation are subtracted from the employee's total creditable service.)