The term "voluntary separation" as used in the statute means leaving employment of one's own free will. Complete a Withdrawal of Resignation Form; Photocopy the form for your records.The CF-18 form is a request for treasurer resignation. These resignation letter templates would help you write yours in no time, and learn how generative AI can help too. Learn how to write a professional resignation letter with our helpful guide. Add contact details, company name, and date. Menendez sent a resignation letter to New Jersey Gov.