Be direct and to the point and, in the first sentence, acknowledge the receipt of their letter of resignation and formally accept it. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation.The employer is not legally obligated to accept that offer and may immediately accept the resignation or accept shorter than the offered notice. Employment contracts typically set out the term or length of employment, compensation and benefits, job duties, and circumstances for termination. It is with regret that I formally acknowledge receipt of your resignation notice on July 18th. Assuming there is no contract or agreement to the contrary, you're not required to keep an employee on during their resignation notice period. Addressed to their manager, the letter provides official notice that the employee plans to leave their position. If you do not have enough wages from employment in the base period, TWC cannot pay you benefits.