As we’ve already mentioned, the industry standard for writing original content is one page per hour (for one writer). A 15000-word dissertation is almost 55 pages long, which means it will take 55 hours to write it. Now, you need to understand that your writer needs some time off to eat, sleep, and rest, like all other people. Therefore, a comfortable deadline for them would be 7 days. You can request a shorter one, but remember that an overworked writer can’t produce high-quality work.