Us Labor Department 214 Jackson St Sioux City, IA 51101 Phone : (712) 252-2907 Business Category Regulation Licensing & Inspection Of Miscellaneous Commercial Sectors United States Government--labor-dept Of, Employment Standards Administration Wg And Hr Dvsn 214 Jackson St Sioux City, IA 51101 Phone : (712) 252-2907 Business Category Government Offices-Federal Government Offices & Public Schools