(AP) -- A Jet Propulsion Laboratory worker who passed out religious DVDs on the job is suing the JPL for discrimination after he was demoted.

David Coppedge's lawsuit filed last week in Los Angeles County says he was demoted last April for discussing his views in the workplace. He wants a court order allowing him to discuss his beliefs.

Coppedge is an information technology specialist on the Cassini space mission exploring . He's also a Christian who promotes the concept that an intelligent being created the universe.

Defendants in the lawsuit include his supervisor, JPL and the California Institute of Technology, which runs JPL.

A call left for a JPL spokeswoman Monday wasn't immediately returned.