In the formal offer letter, provide comprehensive details about the position, compensation, benefits, and other pertinent terms. Employment Offer Letter Instructions.I just started a job at an employer in Georgia. I signed an offer letter, which stated the employment was "at will. Offer letters aren't considered legal documents because these documents just propose a position to potential candidates. What should be included in an offer letter? Learn what to include in a job offer letter and use our ready made template.