Start a job offer letter with "Dear" and the candidate's first and last name. Let them know that your company is enthusiastic about the job offer.What is included in an offer letter? Offer Letter Templates. Templates are updated periodically and the most up-to-date template should be used for each hire. It contains basic details such as the candidate's designation, total compensation, benefits, and employment start date. What format should your job offer letter be in? An appointment letter is a formal document that a hiring manager uses to present a candidate with a job offer and outline the aspects of the role. A job offer letter is a crucial document that outlines the details of a job opportunity to a candidate. Offer letters are used to inform a prospective employee that he or she is being offered a position.