BJ Davis' allegation includes misbehavior by a co-worker with the stuntman's age in mind, said The Hollywood Reporter.
Davis, 63, worked in stunts from 1978 until 2013. In the latter year, he said, mistreatment on the set of Sony's film ended his career.
He said, he nearly could not get work on the superhero sequel, despite his formidable career.
He alleged that stunt coordinator James Armstrong of Armstrong Action told him the production would only hire New York stuntmen, so he moved from Los Angeles to New York, only to learn when the production hired him that numerous nonlocal stuntmen were flown in to work on the set.
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On set, Davis said Armstrong consistently assigned younger stuntmen the "premium" stunts that were worth more pay.
He added younger stuntmen made disparaging remarks about Davis' age, and Armstrong "shared the same discriminatory view, and his attitude actually encouraged the harassment."
"Then, things got even uglier," continued the complaint.
He claims USD 50,000 on 13 clauses.
Director Marc Webb is not a defendant, but production companies Sony, Columbia, Arad Productions and Matt Tolmach Productions are.