Employment Offer Letter Instructions. Your offer letter needs to contain anything that is unique to this position like wages, start date, duties, and supervisor.Provide the employee with an employment agreement or offer letter. This should outline the terms and conditions of their employment. This form will express the terms of the purchase (purchase price, closing date, etc.) that you are proposing to the seller. A sample letter offering a job contingent upon the results of a background check or other criteria. INTRODUCTION: These guidelines are provided to assist Broker and attorneys who are completing the Offer to Purchase and. Offer a job in writing to set out the terms of your employment relationship. With Nolo's Offer Letter, you can include the following important details:. The conditions should never include statements about job security, promises of future employment or contractual agreements.