Wayne Overson, 54 of Union City was arrested on suspicion of making criminal threats, battery and vandalism, Lindblom said.
The truck driver, who was blocked from entering the facility by several strikers, got out of his truck and a fight started at about 6:30 a.m., Lindblom said. Hayward police responded to calls of a dispute but the fight had broken up by the time officers arrived, Lindblom said.
Interviews with the driver and others still on the scene led to the arrest of Overson, Lindblom said. Local 853's principal officer Rome Aloise called it a trumped-up incident.
``Sometimes you'll see a company do things to exacerbate a situation,'' he said.
``We preach being peaceful and picketing peacefully,'' he said. ``We are chalking this up to over exuberance by a few people.''
Gillig Corp. had no comment.
The striking Gillig workers perform mechanical and assembly work along with order filling and shipping of parts to transit authorities. They are striking for increased wages, increased contributions from the company for health care costs and a number of non-economic changes, according to the strikers.