W-4 form is a tax form that employees in the United States use to provide their employers with information about their tax situation. The form includes information such as the employee's name, address, social security number, number of dependents, and filing status. Therefore, I can say that you would need to include all of this information on a W-4 form except for information that is not related to your tax situation or employment, such as your favorite color or hobbies.