Us Labor Department 365 Smoketree Business Park North Aurora, IL 60542 Phone : (630) 896-8700 Business Category Regulation Licensing & Inspection Of Miscellaneous Commercial Sectors Occupational Safety And Health--occupational Safety And Health Administration-osha, Chicago North Area Offices 365 Smoke Tree Plz N Aurora, IL 60505 Phone : (630) 896-8700 Business Category Government Offices-Federal Government Offices & Public Schools United States Government--labor Dept, Occupational Safety & Health Administration, Area Office 365 Smoke Tree Plz North Aurora, IL 60542 Phone : (630) 896-8700 Business Category Government Offices-Federal Government Offices & Public Schools United States Government--occupational Safety And Health, Occupational Safety And Health Administration-osha Aurora, IL 60505 Phone : (630) 896-8700 Business Category Government Offices-Federal Government Offices & Public Schools