How to Use a Police Officer Resignation Letter (5 steps). Notify the Chief of Police; Give Reasons; Date of Resignation; Submit Letter; Return Items. 1.It is much better to have resign from a job than to be terminated. List the employment and list it as a resignation. One way to leave on good terms is to write a polite, professional resignation letter in which you thank your employer for your time at the company. Here, we provide tips, templates, and sample formats to craft a polished Resignation Letter that effectively communicates your intentions. The intent of this letter is to notify you of my resignation from the Commissioner's Staff at the U.S. Customs and Border Protection. An exempt monthly-paid staff member is expected to give at least four (4) weeks notice. Notice should be in writing. Here, we provide tips, templates, and sample formats to craft a polished Resignation Letter that effectively communicates your intentions.