Two Atlanta law firms, Sutherland, Asbill & Brennan and Kilpatrick Townsend & Stockton, have filed human trafficking suits in federal court in Texas for 50 Indian guest workers whom they allege were treated like modern-day slaves by Signal International LLC, a marine fabricator based in Mobile, Ala.

Signal recruited the men to work as pipe fitters and welders at its shipyards in Orange, Texas, after Hurricanes Katrina and Rita scattered its local labor force, according to the complaints.