Sample Letter Of Expiration How Can I Write A Letter Of Non - Extension Of Employment Contract For Myself. I Do Not Want To Renew My Contr?

How can I write a letter of non - extension of employment contract for myself. I do not want to renew my contr? - sample letter of expiration

I work for a company in Oman for 21 months and my two - permanent contract one year. I agree with my employer one month before the due date of my contract. I would also like the reasons for the decision expressed. Is there a template letter to that effect?