Four black construction workers say they were subjected to racial harassment and discrimination while working on the new JPMorgan Chase regional office in Plano's Legacy West.

Dallas-based Beck Co. is among the companies named in the lawsuit filed by Scott Perez LLP on behalf of the four workers: Lerone Boyd, Michael Marshall, Jimmy Allen, and Trojuan Cornett.

After the workers complained about the harassment to Beck, the general contractor of the site, they were fired, according to the lawsuit that was filed Tuesday in the 95th Judicial District Court of Dallas County. They said they also complained about the harassment to Aerotek, Inc., a staffing company on the project, and JR Butler, Inc., a crane operator at the site, and nothing was done.

They were on the job from late 2016 until the summer of 2017. The workers are asking for a jury trial, back pay and damages of $1 million each.

Beck Group said in a statement that it believes the lawsuit is "frivolous and without merit" and it takes "seriously our responsibilities as an equal opportunity employer.

"Similarly, our subcontractors, named above, promptly and thoroughly investigated these complaints and found that the complaints were not substantiated," the Beck statement said.

"The Beck Group core values stress doing the right thing, integrity, honest behavior, lasting relationships and the highest ethical standards," the statement said. "We have lived by these values for over a century and are disheartened by the public allegations of unacceptable behavior."

The four workers claim they were subjected to daily verbal abuse and harassment that included constant use of the "N" word and which also culminated in two assaults on one of the workers. Multiple white co-workers at the site were former members of the Aryan Brotherhood, the lawsuit alleges.

Matt Scott, lead attorney for the workers, said that some of the alleged abusers had numerous racist tattoos, including swastikas. One worker had a tattoo across his entire back that read, "White Pride — Committed to My Culture," said Scott.

He called it one of the "worst cases of workplace race discrimination I've seen."

"What these four went through nobody should have to go through to earn a paycheck," Scott said.

In addition to Beck, Aerotek and JR Butler, defendants listed ML Holdings Company Crane Group, LLC, Crane Service General Partner, Inc. and two individuals, including one supervisor.

The U.S. Equal Employment Opportunity Commission said Friday that 84,254 workplace discrimination charges were filed with the agency in 2017. Charges dealing with race were alleged in 34 percent of the cases.