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.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. You can ask your employer to use this sample letter as a template. How to fill out the Employment Letter Template for Home Loan Verification? 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.