Final answer:
Employers are responsible for ensuring employee tax forms W-4 and, if applicable, DE-4 are properly completed and updated. These forms dictate federal and state income tax withholding.
Step-by-step explanation:
The question "ER's responsible for the EE to make sure the W4/DE 4 is ___________________." pertains to employer responsibilities in handling employee tax documents. Specifically, the employer (ER) is responsible for ensuring that the employee (EE)'s Form W-4 (Federal Income Tax Withholding Certificate) and, if applicable, Form DE-4 (State Tax Withholding Certificate) are properly completed and updated as necessary. These forms determine the amount of federal and state income tax to be withheld from employees' paychecks. It is crucial for compliance with tax regulations that these forms are filled out accurately and kept up-to-date to reflect any changes in the employees' personal or financial situation that could affect their withholding allowances.