I would not hire a single salesperson without first seeing a writing sample of some sort from them. The information age has made writing a priority skill in communicating with prospects.
This cover letter sentence makes me lose my faith in proofreading:
I relocated down south due to my wifes job and the maeket for my construction managment was not very good so I ventured in to new firlds.
There are different levels of errors within cover letters and resumes. This example would fall in the “very bad” error pile.