Use oneinch margins for all sides of the letter. Use one of our resignation letter templates.The complete guide to writing your resignation letter including expert tips, free copyable samples, and templates. How to write a resignation letter that's effective immediately? Start with a two weeks notice letter. This will serve as a formal, written documentation of your intent to leave and your transition timeline. A good resignation letter is brief, succinct, and expresses gratitude to your employer. Use this sample to part ways amicably. Template and guide for control simple and professional resignation letter maze find out crap to avoid trouble in yours. You should include your title, company name, and last day of employment with them.