Enter the salary amount being offered to the employee. The salary may be entered as an annual, monthly or hourly basis.We appreciate you taking the time to meet with Human Resources to fill out this essential paperwork so you can start your new position. In the offer letter, include their starting salary or hourly rate. Use salary calculators and job boards to get a sense of what you should be earning. 2. We'll help you along the way and build a document that fits your needs. What is included in an offer letter?