With the Paid Time-Off (PTO) Purchase Program, full-time, non-bargaining employees can purchase up to 40 hours of additional PTO per calendar year, in 4-hour increments. Part-time employees can purchase a prorated amount of PTO based on their average hours worked during the year. The cost is deducted on a before-tax basis from the employee's paycheck and spread out over the pay periods in the year.