Work and Travel W-4 Form
You must complete the W-4 form with your employer before you start working within the Program. This document is used to calculate the amount of tax deduction during your time in the United States. The US tax law is quite extensive and flexible, so you need to fill in the form carefully. Since the program participants are counted as non-resident aliens, most of the instructions in the W-4 form are not relevant to you. If you do not fill out the W-4 form properly, you will have to pay more than the amount you would normally pay.
In addition, serious problems may arise when issuing visas for people who fill in inappropriate, incomplete or incorrect information from the US tax authority. There are a few important information you just need to know;
do not request exemption, leave this line blank,
If you are married in the part where your marital status is asked, you should mark the single section.
One of the most important issues is that if you start a second job in the program, you will need to fill out a new w-4 form.