I am a subcontractor on a commercial project in Oregon.
Good afternoon and thank you for reaching out.
That is something you are able to decide to do, but typically you can't legally hold it over them to pay unless you have a judge award that to you in a lawsuit, but it never hurts to ask.
Here is some additional information for Oregon lien law , if you need more.
Please let me know if I can answer or help in any other way.