Does anyone have experience helping a person with a disability with paperwork?

I'm from a red state, and when I worked in social services there a person's IEP (Individual Education Plan) from ther special education department of their high school would qualify as gov't proof of disability. This would allow them to get discounted bus fare, help with utility bills, a job coach etc. Does this work similarly in Oregon? My coworker is struggling hard, any advice appreciated.