The Transport Workers Union said it plans to deliver a petition with 8,000 signatures on it to the Justice Department offices in Tulsa on Thursday.
The union, who represents mechanics, ground workers and other employees at American Airlines, is asking the government to drop its anti-trust lawsuit against American's merger with US Airways.
"We put this on the Internet a couple of weeks ago, and it’s spread like wildfire," said TWU Local 514 President Dale Danker in a statement. "People just can’t understand why our own government is trying to block a merger that’s pro-competition, pro-consumer and that protects good-paying U.S. jobs."
American operates its only remaining aircraft maintenance base in Tulsa, employing about 6,000 workers at the facility.
"If this merger goes through, it will protect the jobs of our members and allow us to give consumers excellent service and real choice," Danker said.