The Clerk of the Disciplinary System shall submit applications for resignation to Bar Counsel, who shall investigate each application and determine whether,. Resignation acceptance letter template.Below is a sample union resignation letter. You should check your union's constitution and bylaws to see if it is specific to whom a resignation must be sent. It is not legally required. Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company.