You have a good case in violation of state and federal wage and hour laws. Put simply, employer must pay the agreed rate.It's best practice for an offer letter to cover compensation, benefits and other key job details — including PTO. The salary that I mentioned in the HR round and salary that is mentioned in the offer letter is different. How can I tackle this issue? Employment Offer Letter Instructions. The short answer is no. Need help drafting a job offer letter? Make a job offer and outline the responsibilities of the role. A job offer letter should be detailed with company and job information, including what the job entails, responsibilities and reporting structure.