Call or email the person who made you the written offer. FORMAT. Cover letters should be written in a business format.Parts of a cover letter include job seeker's email address and phone number, date, employer's. Dear ,(the "Company"), is pleased to offer you employment with the Company on the terms described below. Be ready to complete the application in the office or online. Many companies will not let you take the form with you to fill out at home. First, employers should be clear with candidates about any preemployment screenings and other conditions precedent to actual employment that must be satisfied. Found the perfect candidate to hire? We've got 7 types of job offer letter templates to choose from that'll help you seal the deal. (4) Letter of Request—Admitting Evidence.