Dear …
RE: Leave of Absence for __(Name)__
Please accept this as my formal request for a leave of absence for a __(# week/month)__ period of time from my __(type position)__ position at __(name of organization)__.
On __(date)__, I was notified of __(briefly describe what the situation is)__ and will require time away to __(briefly describe why absence is needed)__. This has been a __(difficult time for me/long awaited opportunity/etc.)__ and I am asking you for your understanding in this matter. If there was any other way I could manage to __(briefly describe why absence is needed)__ without taking time off from work, I would do it.
Therefore, I am asking you to authorize a Leave of Absence for me from __(date)__ to __(date)__. I appreciate your consideration in this matter and look forward to hearing from you soon. Thank you.
Yours truly,