In accordance with Section of 17-13-0107-A of the Chicago Zoning Ordinance, Title 17 of the Municipal. "Do You Swear (Or Affirm) That The Statements In This Document Are True?" Verification upon oath may be taken in an individual capacity or in a representative. Discover 7 different employment verification letter templates with different details for proof of employment or future job opportunities. In this article, we discuss how to write a conformational letter, look at sample templates for formal and informal confirmation letters and share some tips. I am writing to confirm my acceptance of your employment offer on April 20 and to tell you how delighted I am to be joining XYZ Corporation in Chicago. An employment verification letter is a document that confirms an employee is currently or was previously employed at a certain company.