I am filing on behalf of my boyfriend, who was here on a H2B worker visa, non professional. Do i file his return on 1040NR? he qualified as Oregon resident?

When did he first enter the US with the H-2B visa?  How long has he been staying in the US?

If he has met the Substantial Presence Test  SPT, he will be considered as a US resident for tax purposes and will be filing a Form 1040.  If he did not meet, he would be a nonresident and file a Form 1040-NR.  As TurboTax does not support 1040-NR, he is advised to contact Sprintax. 

To file as resident of Oregon, he needs to meet certain requirements.  To check , click here:  Oregon residents