This article will address how to write a retirement letter of resignation and provide an example that you can use as a template for your own retirement letter. What do you write in a teacher Retirement Letter?Give your employer at least two weeks' notice. Employees with a long tenure at the company typically give a month's notice or more. Resignation to Retire (Complete if you are resigning and immediately retiring). I am writing to you today to inform you all that I am resigning. The voices and concerns of educators and students have been ignored for far too long. 1. If you are applying for retirement, contact your retirement system prior to submitting this form. Information about the. The teacher shall request release from contract at least two weeks in advance of intended date of resignation.