Company or Employer — Enter the name of the person's company or employer. Address — Enter the address of the person's company or employer.Learn what an employment verification letter is, with examples and templates. Discover key components, tips, and sample letters. Need to provide proof of employment status? Use this sample employment verification letter to create your own. What should be included in a proof of income letter? Employment verifications go through the work number. This request should only be submitted if you need additional information not included in the work number. Learn how to write a proof of income letter with our stepbystep guide and use our fillintheblanks template as an example.