If you work remote, it's important to know what you'll need when applying for a mortgage, and where you can apply for one. An employment letter is a crucial document you need to secure a home loan.Read about how to write a winning employment letter for mortgage. 1. Download the employment letter template. Employment verification is relatively straightforward. The process begins as you fill out your employment information on your loan application. When you are buying a home, you will want to know the details of the loan process in Arizona from application to closing. Looking for an employment verification letter? Mortgage lenders may request a letter to verify your employment. Here's a simple template you can give to your employer to speed things up.