Explain what caused the employment gap, and be honest about it. There are lots of reasons why people aren't employed.I am writing to provide an explanation for the gap in my employment history as indicated in my mortgage application. Clearly explain where the money has come from, where it is going, the gaps you have in your employment, or any other issues that your lender might have raised. Mortgage lenders might request a letter of explanation for various red flags that come up in underwriting. Learn how to write one, and download a template. A letter of explanation is included in your mortgage application to help clarify inconsistencies or gaps in your financial records or credit history. Employment gaps are allowed to qualify for a mortgage. You do not have to have two years of continuous full-time employment to qualify. It's best to keep your letter of explanation short and sweet.