Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last.Use one of our resignation letter templates. Your letter should formally acknowledge the employee's resignation, confirm their last day of employment and wish them the best. This signed settlement agreement serves as a resignation letter. The University agrees to accept Employee's voluntary resignation. Genesis Gonzales submitted a letter of resignation to Sutherland Global Services informing them that her last day would be March 11, 2013. Please accept this message as my formal notice of resignation. I am fortunate to have received a long awaited opportunity that I cannot pass up. District 3 Councilmember Omar Torres to resign immediately "in light of information revealed in an ongoing police investigation into his alleged conduct."