Give Form W-4S to the third-party payer of your sick pay, such as an insurance company, if you want federal income tax withheld from the payments. Current Revision Form W-4S PDF Recent Developments None at this time. Other Items You May Find Useful All Form W-4S Revisions About Form W-2, Wage and Tax Statement About Publication 505, Tax Withholding and Estimated Tax About Form 1040, U.S. Individual Income Tax Return About Form 1040-ES, Estimated Tax for Individuals Other Current Products