1. Enter the current date. Here are the 5 steps to get 147c.Need to provide proof of employment status? Use this sample employment verification letter to create your own. "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. 1. Enter the date the letter was written. This job confirmation letter of employment sample can help guide your steps as you draft and edit a similar document of your own. Download Illinois Employment (Income) Verification Letter template, modify and send for signing using BoloForms Signature. You should type the letter and make sure to print it out on paper with your company letterhead.