Of course. As soon as South Koreans know that this guy is a North Korean refugee, they think he's not smart, that he's passive, that he's not responsible. I mentioned the prejudice. These things affect their ability to get a job.
Actually, I have experience of this. When I got to South Korea, I wanted to work at a gas station. Of course, at that time I had a North Korean accent. I had an interview, and he asked me my name. I gave him my name and then he didn't ask me any questions, because he knew that I was a North Korean refugee because of my strong North Korean accent.