His expertise is ergonomics in design. He has been teaching ergonomics for industrial design students, interior Architecture for about two decades. He is also the deputy of Iranian Association of Industrial design lecturers. During the last two decades, he has presented some of his research works at some international conferences and workshops. During 2009-2011 he was hired by UPM (an international university) in Malaysia, and last year he was working at KTH-Stockholm as a visiting researcher. His current research focuses on ergonomics and sustainability. Hassan has been managing some sorts of industrial ergonomics projects at some well-known manufacturing companies in Iran in which cost-benefit studies are the core of his ergonomics interventions.