Learn how to write a resignation letter due to family reasons with our stepbystep guide and sample letters. Here are two examples of letters resigning for family or personal reasons.The first is a formal business letter, and the second is an email sample. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation. Browse our collection of free, professionally crafted resignation letters tailored for family reasons. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. This decision has not come easily. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude. I have decided to resign due to personal reasons that require my immediate attention.