And if they refuse at first, they will often accept if you offer to pay the first few months of rent in advance. Here's a template you can use for your proof of employment letter: Download the TemplateTemplate PDF.Also include the recipient's name and address in your acceptance letter. 4. Write a clear subject line. Welcome to Cochise County! This letter serves to confirm your recent acceptance of employment with Cochise County. Learn how to write a proof of income letter with our stepbystep guide and use our fillintheblanks template as an example. Applicant(s) have received and accepts the attached qualifying criteria and rental instructions. This letter serves as a pivotal tool in commencing your new role with confidence, setting forth clear expectations, and offering reassurance to the company.