From "Gulf Coast Slaves"

"Halliburton and its subcontractors hired hundreds of undocumented Latino workers to clean up after Katrina -- only to mistreat them and throw them out without pay.

...
Still, tracing the line from unpaid undocumented workers to their multibillion-dollar employers is a daunting task. A shadowy labyrinth of contractors, subcontractors and job brokers, overseen by no single agency, have created a no man's land where nobody seems to be accountable for the hiring -- and abuse -- of these workers.

...
I was with Cintra when she received phone calls from several Latino workers who complained they were denied, under threat of deportation, the right to leave the base at Belle Chasse. Cintra also took me along on visits to squalid trailer parks -- like the one at Arlington Heights in Gulfport -- where up to 19 unpaid, unfed and undocumented KBR site workers inhabited a single trailer for $70 per person, per week. Workers there and on the bases complained of suffering from diarrhea, sprained ankles, cuts and bruises, and other injuries sustained on the KBR sites -- where they received no medical assistance, despite being close to medical facilities on the same bases they were cleaning and helping rebuild."

Read the rest on Salon.