No. He only needs to file a WI state return and include the income in the WI state return. Since he was not physically working in OR they will not tax that income. Here is an OR Department of Revenue source (extracted below).
"Do you work for an Oregon Employer? If you don't live in Oregon, you only have to pay tax on the wages from your job for work you do inside Oregon. Oregon won't tax your wages for work you do at home or some other place outside Oregon."
In TurboTax enter the form 1099-Misc in the "Wages & Income" section using the "Other Common Income" dropdown to find the "Form 1099-Misc" topic.
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