Am sorry to state that perhaps you are not a HR professional or you might have not got your basics right. Can you please tell me, in what way the letters differ from item no.1 to item no. 10 ? Have you classified them into various categories of employees ? This question leads me to another question whether you have any HR policies, procedures, systems in place in your organisation ? Another question, do you have a wage structure, allowance structure for various levels of employees of your organisation ? If you say yes, then the question arises, how those structures came about, who did it and how these were carried out ? The categories can be Managerial, Executive, Supervisory, non-supervisory or workmen levels. The letters vary from band to band and cadre to cadre. Unless you have your foundation which should be strong, my sharing of formats and letters will not help you at all. Because appointment letters (not appoint letters) also contain various terms and conditions of employment. If you need to include those terms and conditions, you should have an employment policy in place. As I see from your query, you must be in accounts department or in sales or marketing ! Please get your fundamentals clear. You can get hundreds of formats from internet itself... why internet... if you see by the side of my response here, you can see Related Files & Downloads... you can download a few of them... but that is not a solution at all. Best wishes