A good job offer letter should note that hiring is contingent upon the new hire completing all of the new hire paperwork. A written, official acknowledgment of your acceptance of the job offer.Learn what to include in a job offer letter and use our ready made template. You'll need to formally accept your offer. An offer letter provides a brief overview of the position and company and includes specific job details, like start date, salary, work schedule and benefits. If you decide to accept the job offer, it's advisable to communicate your acceptance in writing using an employment acceptance letter. It acts as a written confirmation of the employer's job offer and typically requires the candidate to sign it to accept the role. Customer: Who should sign an offer letter first? The employer or employee?