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.1. Download the employment letter template. You can ask your employer to use this sample letter as a template. A mortgage lender might ask you to write a letter of explanation to better understand your finances when deciding whether to approve you for a loan. Need to provide proof of employment status? Use this sample employment verification letter to create your own. Some buyers can use an offer letter mortgage to qualify for a home loan before starting their new job. Here's how offer letter loans work. A mortgage lender might ask you to write a letter of explanation to better understand your finances when deciding whether to approve you for a loan.