Employee: Give this form to your employer and keep a copy for your records. Remember to review this form once a year and update it if needed.Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. The Payroll Office is responsible for ensuring that employees are paid accurately and on time. They also handle employee time sheets, tax forms, and more. A W4 form, or "Employee's Withholding Certificate," is an IRS tax document that employees fill out and submit to their employers. Employees who work in a locality with state income tax must fill out a withholding form. Learn which state W-4 form your employees must use. Use this form to determine employee's federal income tax withholding. This form requires Adobe PDF Reader.