The USPTO Maternity/Paternity Program permits a parent to use any combination of annual leave, sick leave (where appropriate), compensatory time, credit hours and leave without pay for the first 6 months after the birth or adoption of a child. This time off can be used intermittently or continuously during the 6 months. An additional 12 weeks beyond the 6 months may be used under the Family Medical Leave Act (for employees with at least one year of Federal Government service) for up to 12 months after the birth or adoption. An employee may earn and have a balance of up to 160 hours for maternity/paternity purposes. Rest periods are available when a health provider requires an employee to have a rest period for a medical complication. These periods are recurring brief absences of up to one hour per day.