Researchers at The University of Texas Health Science Center at Houston divided parents into those who had more non-people-oriented jobs (technical) or more people-oriented jobs (non-technical).
Fathers who worked in engineering were two times as likely to have a child with an autism spectrum disorder (ASD).
Those who worked in finance were four times more likely and those who worked in health care occupations were six times more likely to have a child on the autism spectrum.
There was no association with a mother's occupation. However, children who had both parents in technical fields were at a higher risk of having a more severe form of autism.
The findings will be presented at the International Meeting for Autism Research in Atlanta.