This resource includes resignation letter samples you can use to advise your employer that you are resigning from your job. Sample resignation letters include a basic letter to say you are leaving, plus formal resignation letter samples thanking your employer.

Source: About, Inc., A part of The New York Times Company

The purpose of this application is to help employees to ensure that they do not have too much or too little income tax withheld from their pay. It is not a replacement for Form W-4, but most people will find it more accurate and easier to use than the worksheets that accompany Form W-4. You may use the results of this program to help you complete a new Form W-4, which you will submit to your employer.

Source: Internal Revenue Service