In the mortgage loan business there is person who plays a key role in the mortgage approval of a borrower. This important person, who is known as a mortgage underwriter, is appointed by the mortgage lender, and that person can not be seen or interacted by the borrower. Usually, a lender does not approve a loan to a borrower without the consent of the underwriter. In fact, an underwriter is responsible for assessing the risks associated with a real estate loan. An underwriter judges the creditworthiness of a mortgage applicant.