"Oregon income includes income shown on your federal return for services performed in Oregon."
https://www.oregon.gov/DOR/forms/FormsPubs/publication-or-40-np_101-045_2017.pdf
As @DoninGA implied, if you never actually (physically) work in Oregon for that income, it is not Oregon-source income, and therefore not taxable to an Oregon non-resident.
A small handful of states tax non-resident remote workers, but Oregon is not one of them.
Your employer should not withhold Oregon taxes from your pay.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
