Haas has been working together closely with large international producers since the 1980s. High tech and modern products usually evolve from these collaborations. Products from Haas always focus on the functionality for the end user. The forms and materials he uses are clear and diverse. He also gives guest lectures about industrial design at different universities. Furthermore, Haas is a member of several (Dutch) design groups and jury panels. His contemporary work has received many awards, such as the “ID Award”, “iF product design award” and “best of the best”. The latter is the highest possible award at the Red Dot Design Awards. In 2011, Haas also received the Design Plus Material Vision award.