Need help drafting a job offer letter? The email serves as your informal offer letter.The offer letter should provide details on the salary and pay periods. Describe how much they'll make per year or per hour, when they can expect their pay, and payment options, such as checks or direct deposit. Specify the basis for the rate paid, i.e. Salary for varying hours, day rate, etc. What is included in a job offer letter? Excited for the offer, they said yes. Other benefits will be described in more detail in the employee handbook and orientation package. That means providing information on your salary, benefits, and total compensation.