My client is a traveling nurse based in one state where he receives a W-2 with all income for the year under federal and AND state.  Then he got 3 other w-2's with only the state amounts filled in.  The state amounts of income add to the total income, but the state taxes do not.  All of the states DO have state income tax.. One W-2 has not state tax on it.  Should I have him contact payroll to see why, or is there another way to figure this out?

Thank you