For the procedures for requesting a health leave of absence, personal leave of absence, pregnancy accommodation, or parental relief, please visit the GSAS section of the University Bulletin. Once you open the "Academic Regulations" accordion, scroll down to item P (Leaves of Absence) for all procedures. Visit the Office of Graduate Affairs website for Frequently Asked Questions and a chart of different leave types. You can also use this job aid for help with requesting a leave of absence.

The policies from the Bulletin are also copied below.

Leaves of Absence 

Personal leaves of absence up to one year will normally be granted to students in good academic standing who present compelling personal reasons. Students can also take a Health Leave of Absence. Returns from leave may be subject to conditions established at the inception of the leave. A student who has been granted a leave of absence is not considered an active student during the leave. Time spent on authorized leaves of absence will not be counted toward the maximum time permitted to complete degree requirements. If, for any reason, a student must extend a leave of absence, he or she must request such an extension in writing before the leave of absence expires. Failure to do so will result in involuntary withdrawal from the Graduate School. Students who extend their leaves of absence beyond one year may lose departmental funding.