He will feature in an Unreal Films documentary being made for Works4Us, the employment advocacy service for people with learning disabilities which is believed to be the first in the world.
Works4Us manager Dave Wickham, of Wellington, said the footage featuring Mr Stevens would show how a person like him could work in open employment.
Mr Stevens, who works three days a week in the produce section of Countdown in Cumberland St, has been employed for 11 years.
He hoped that by taking part in the film he would be able to help break down the barriers to work for others.
People should not be afraid to ask for work and employers should look at people's abilities not their disabilities, he said.
The best thing about having a job was getting real money, not just "dribs and drabs".
Working also made him feel good about himself. He could go home and be "really happy because I have enjoyed the day. I can be positive about my day."
Mr Wickham said the ultimate aim of the service was to get people with intellectual disability into paid work.
Part of the service's work to date has been training advocates, including two in Dunedin, although Mr Stevens would not need one - "he knows enough about it already".
The film will be used to help educate people about what is possible for workers and add to information already in its booklet Work and Your Rights in New Zealand, which has been widely popular because of its plain-language approach.
Other sections of the film will look at a worker in open employment who needs support and someone in a business enterprise (previously known as a sheltered workshop) going through the minimum wage exemption process.
This procedure has to include fair, good-faith bargaining between employers and properly represented and advised workers.
Mr Wickham said the advocacy service was set up by the Ministry of Social Development through the People First organisation in 2008 following a law change in 2007 which meant that sheltered workshops were renamed business enterprises and were expected to be profitable in their own right.
Many sheltered workshops closed after the law change, including 125 run by IHC.
Across the country there were only 21 business enterprises, and the recession had made an impact, but Mr Wickham was hopeful that new opportunities would arise as the economic position improved.
