Yes. There is no OR state adjustment specifically related to working remotely but you only need to allocate the work actually performed in OR on your OR nonresident state income tax return. So when you are working on the Oregon Income and Adjustments (see screenshot) you will only need to allocate that portion of your wages to OR that was for work actually performed in OR.
If you are a WA resident and you are working remotely from home, then this portion of your earned wages will be considered WA-sourced income (since income is sourced to where the work is performed).
You can divide your wages between OR and WA based on the amount of days you worked in each state.
