A formal letter that is sent to the employees from the company is called the job offer letter. After making the verbal job offer, the hiring manager typically calls the selected candidate to inform them that they are being offered the job. These letters are usually given to the employees on the first day of work. This letter is also called the employment offer letter. It lists down the things that were discussed during the job offer process and interview. Offer letters are considered as legal documents. Click here to read more.