At the moment you hand the letter of resignation to your employer and it is official that you are leaving your present job.
Before doing this be sure that you have received a letter confirming that your new job is definite and meets all of your requirements. At this point it is safe to put your letter of resignation into work.
Writing the actual letter of resignation may one of the hardest parts of making the decision to change the job. In today's market many employers and employees do not fall it necessary to write a formal letter of resignation. Sometimes a brief conversation with your boss may suffice. Keep it simple because you have accepted a new job and you are leaving. Let them know exactly when you will be leaving and impress upon them that the date that you have given them is a form date. Tell them how very much you have enjoyed working for the company and that you will be more than happy to make your departure as convenient as possible.
If you feel it is necessary to write a letter of resignation make sure you keep it simple and let the know when you will be leaving and how very much you have appreciated the work experience that they have given you. After telling your manager about your departure this would be a good time to hand them your letter of resignation. Shortly after this is done the news will quickly spread that you are leaving. Always handle conversations with fellow employees with dignity. You are leaving because you have found a job that is better for and you do not need to trash the present employer.
Many employers conduct what is called, "An Exit Interview", were you asked to have your thoughts about the company. They may even ask what it will take to make you stay, what they can do to make there company a better place and the most asked question, "Why did you look for another job?" It is best to smile and answer the question simply and honestly then thank them for there time and then leave. You want to leave with them thinking goods things about you.