Provide the date of your last working day: In the same paragraph, provide the date of your last working day. Clarity Is King In your letter, clearly state your intention to resign and your last working day.It's important to avoid ambiguity. Below, you'll find a suggested outline, examples for different scenarios, and tips on writing a resignation letter that works for you. Please accept this letter as my formal resignation. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation. If you want to hand in your notice on Monday 9th and count that as "Day 1" of your notice period so that your last day is Friday 20th, then just do that. Look up your state labor laws. Most have laws as to vacation time payout. 2 weeks notice period.