Section 17.646 - Obligated service(a)General provision. A participant's obligated service will begin on the date on which the participant begins full-time, permanent employment with VA in the field of psychiatric medicine in a location determined by VA. Obligated service must be full-time, permanent employment and does not include any period of temporary or contractual employment.(b)Duration of service. The participant will agree in the acceptance of conditions to serve for an obligated service period of 2 or more calendar years.(c)Location and position of obligated service. VA reserves the right to make final decisions on the location and position of the obligated service.