If you're planning to quit your job here is the compilation of the best resignation letter samples to help you easily draft your resignation letter. Provide at least two weeks' notice when leaving a job (preferably longer; double check requirements with HR).Specify a date and state your intentions clearly. Example: I'm writing to inform you of my decision to resign from my position as a park ranger with the National Park Service, effective May 1st. Learn how to craft a professional resignation letter for personal reasons. Resignation letter effective immediately due to a new job opportunity: Dear Ms. Carter,. I am writing to formally notify you of my resignation from my position at PQR. Your resignation letter should be to the point, concise, and clear. Please understand that this decision, though tough, is what I believe to be in the best interest of my personal and career growth. Include your last date of employment in this section.