Some students choose to hire someone to word-process the dissertation.
Such matters as method of payment, paper supply, and deadlines, including the possibility of revisions, should be agreed upon in advance. Make sure the person you hire has the stamina, time, and professionalism to see the project through to completion. If a word processor quits in mid-project and you are up against tight deadlines, it will cost you both time and money, as well as interrupt your work on the dissertation itself. GSAS recommends a written agreement stating that payment or final payment will be made upon completion of the project.