You must require an employee to agree to the terms of a service agreement:

(a) Within the continental United States for a period of service of not less than 12 months following the effective date of your transfer;

(b) Outside the continental United States for an agreed upon period of service of not more than 36 months or less than 12 months following the effective date of transfer;

(c) Department of Defense Overseas Dependent School System teachers for a period of not less than one school year as determined under chapter 25 of Title 20, United States Code; and

(d) Renewal agreement travel for a period of not less than 12 months from the date of return to the same or different overseas duty station.