Q. Does an Oregon non resident worker get all of the state taxes paid refunded?
A. No.
A non resident is subject to tax on his OR source income. In particular, a resident of a neighboring state who works in OR is subject to tax on his wages earned in OR. Your home state will give you a credit, or partial credit, for the tax you paid to OR. If you are a WA resident, there will be no credit, because there is no WA tax. But, you don't get a refund from OR. In other words, living in a state without an income tax does not get you out of paying tax to the work location state.
If you have some other situation, provide more details for a more specific answer.
