Casey Lartigue is the co-founder of the volunteer organisation Teach North Korean Refugees (TNKR), an NGO that connects North Korean refugees with people who can help them.
Mr Lartigue told Sky News many defectors struggle to adjust to South Korean society.
They have made it to South Korea – a challenging process, not everyone survives – and they often suffer hardship along the way,” he said.
“From what I hear, South Korea certainly welcomes them, but after getting out of North Korea, they don’t consider themselves to be limited to South Korea.
“While saying they are thankful to have escaped North Korea and to have been accepted by South Korea, they will still say that South Korea is more of a struggle than they imagined.”