| Nucor Corporation | environmental violation | 2000 | EPA | $98,000,000 |
| Nucor | employment discrimination | 2018 | private lawsuit-federal | $22,500,000 |
| Nucor Corporation Inc. | environmental violation | 2001 | MULTI-AG | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $13,000,000 |
| NUCOR CORPORATION | environmental violation | 2001 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $3,079,123 |
| NUCOR STEEL - HICKMAN | environmental violation | 2001 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $2,039,560 |
| NUCOR CORPORATION | environmental violation | 2001 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $1,539,560 |
| Nucor | employment discrimination | 2009 | private lawsuit-federal | $1,200,000 |
| NUCOR STEEL | environmental violation | 2001 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $1,019,780 |
| GALLATIN STEEL COMPANY | environmental violation | 2002 | EPA | $925,000 |
| Nucor Corporation | environmental violation | 2005 | TX-ENV | $327,500 |
| NUCOR STEEL | environmental violation | 2001 | TX-ENV | $250,000 |
| California Steel Industries, Inc. | environmental violation | 2006 | CA-DTSC | $185,800 |
| NUCOR CORP NUCOR STEEL DIV | environmental violation | 2000 | IN-ENV | $170,740 |
| Nucor Steel | environmental violation | 2001 | AR-ENV | $154,075 |
| Nucor Steel Louisiana, Inc. | environmental violation | 2021 | LA-ENV | $89,760 |
| NUCOR INSULATED PANELS GROUP, LLC | environmental violation | 2022 | EPA | $89,619 |
| ST. LOUIS COLD DRAWN, INC. | workplace safety or health violation | 2015 | OSHA | $85,555 |
| GALLATIN STEEL COMPANY | environmental violation | 2004 | KY-ENV | $85,000 |
| Nucor Corporation | environmental violation | 2017 | SC-ENV | $48,000 |
| ST. LOUIS COLD DRAWN | workplace safety or health violation | 2013 | OSHA | $41,440 |
| CALIFORNIA STEELS INDUSTRIES, INC. | workplace safety or health violation | 2019 | OSHA | $38,500 |
| Metl-Span LLC | energy conservation violation | 2013 | DOE | $31,400 |
| SOUTHLAND TUBE, INC. | workplace safety or health violation | 2013 | OSHA | $29,800 |
| Nucor Corporation | environmental violation | 2017 | SC-ENV | $28,000 |
| CALIFORNIA STEEL INDUSTRIES INC | workplace safety or health violation | 2016 | OSHA | $28,000 |
| Skyline Steel, Inc. | wage and hour violation | 2011 | WHD | $27,560 |
| Nucor Steel Corp. | railroad safety violation | 2004 | FRA | $25,000 |
| Nucor Steel | environmental violation | 2016 | NC-ENV | $21,768 |
| Nucor Steel Decatur | environmental violation | 2007 | AL-ENV | $21,700 |
| Nucor Steel-Arkansas | environmental violation | 2016 | AR-ENV | $20,600 |
| Nucor Steel | environmental violation | 2002 | NC-ENV | $20,361 |
| DAVID J JOSEPH CO. | workplace safety or health violation | 2000 | OSHA | $19,825 |
| SKYLINE STEEL, INC. | workplace safety or health violation | 2016 | OSHA | $19,650 |
| NUCOR CORP NUCOR STEEL DIV | environmental violation | 2017 | IN-ENV | $18,750 |
| NUCOR CORPORATION | environmental violation | 2020 | SC-ENV | $18,500 |
| Nucor-Yamato Steel Company | environmental violation | 2002 | AR-ENV | $18,000 |
| Nucor Corporation | environmental violation | 2019 | AR-ENV | $17,600 |
| NUCOR-YAMATO STEEL, INC. | workplace safety or health violation | 2016 | OSHA | $17,500 |
| INDEPENDENCE TUBE CORPORATION | workplace safety or health violation | 2015 | OSHA | $17,290 |
| NUCOR | workplace safety or health violation | 2016 | OSHA | $16,600 |
| SKYLINE STEEL, LLC | workplace safety or health violation | 2013 | OSHA | $16,445 |
| California Steel Industries Inc. | environmental violation | 2012 | CA-SCAQMD | $15,000 |
| ST. LOUIS COLD DRAWN INC. | workplace safety or health violation | 2018 | OSHA | $14,940 |
| CALIFORNIA STEEL INDUSTRIES INC | workplace safety or health violation | 2015 | OSHA | $13,965 |
| SOUTHLAND TUBE, INC. | workplace safety or health violation | 2012 | OSHA | $13,000 |
| INDEPENDENCE TUBE CORP. INC. | workplace safety or health violation | 2015 | OSHA | $11,000 |
| AMBASSADOR STEEL, LLC | workplace safety or health violation | 2017 | OSHA | $10,865 |
| SOUTHLAND TUBE, INC. | workplace safety or health violation | 2015 | OSHA | $10,676 |
| NUCOR VULCRAFT | workplace safety or health violation | 2018 | OSHA | $10,163 |
| SKYLINE STEEL, INC. | benefit plan administrator violation | 2010 | EBSA | $10,001 |
| SKYLINE STEEL, INC. | benefit plan administrator violation | 2022 | EBSA | $10,001 |
| Metl-Span I, Ltd. | environmental violation | 2004 | EPA | $10,000 |
| NUCOR STEEL TUSCALOOSA, INC. | workplace safety or health violation | 2017 | OSHA | $9,423 |
| SOUTHLAND TUBE, INC. | workplace safety or health violation | 2011 | OSHA | $9,000 |
| SKYLINE STEEL INC. | workplace safety or health violation | 2017 | OSHA | $8,990 |
| Nucor Corp. | environmental violation | 2021 | AL-ENV | $8,800 |
| INDEPENDENCE TUBE CORPORATION | workplace safety or health violation | 2009 | OSHA | $8,775 |
| NUCOR STEEL | environmental violation | 2013 | IN-ENV | $8,750 |
| Skyline Steel, LLC | environmental violation | 2011 | AR-ENV | $8,600 |
| NUCOR-YAMATO STEEL, INC. | workplace safety or health violation | 2016 | OSHA | $8,500 |
| NUCOR STEEL CORP | workplace safety or health violation | 2002 | OSHA | $8,450 |
| NUCOR CORP NUCOR STEEL DIV | environmental violation | 2016 | IN-ENV | $8,000 |
| ST. LOUIS COLD DRAWN, INC. | workplace safety or health violation | 2017 | OSHA | $7,986 |
| NUCOR STEEL CORPORATION | railroad safety violation | 2017 | FRA | $7,500 |
| NUCOR CASTRIP ARKANSAS, LLC | workplace safety or health violation | 2018 | OSHA | $7,500 |
| NUCOR STEEL TUSCALOOSA, INC. | workplace safety or health violation | 2014 | OSHA | $7,000 |
| NUCOR STEEL - BERKELEY DIVISION | workplace safety or health violation | 2000 | OSHA | $6,950 |
| NUCOR CORPORATION DBA VULCRAFT NEBRASKA | workplace safety or health violation | 2009 | OSHA | $6,438 |
| Nucor Corporation | environmental violation | 2006 | TX-ENV | $6,400 |
| NUCOR STEEL CONNECTICUT INCORPORATED | workplace safety or health violation | 2012 | OSHA | $6,300 |
| NUCOR BUILDING SYSTEMS-IN | workplace safety or health violation | 2022 | OSHA | $6,300 |
| METL-SPAN, LLC | workplace safety or health violation | 2012 | OSHA | $6,265 |
| NUCOR STEEL | environmental violation | 2016 | IN-ENV | $6,250 |
| NUCOR STEEL CORPORATION | railroad safety violation | 2016 | FRA | $6,000 |
| INDEPENDENCE TUBE CORPORATION | workplace safety or health violation | 2018 | OSHA | $6,000 |
| THE DAVID J. JOSEPH COMPANY | workplace safety or health violation | 2018 | OSHA | $5,500 |
| ST. LOUIS COLD DRAWN INC. | workplace safety or health violation | 2015 | OSHA | $5,445 |
| Nucor Steel | environmental violation | 2010 | NC-ENV | $5,412 |
| NUCOR STEEL CORPORATION | railroad safety violation | 2011 | FRA | $5,400 |
| BIRMINGHAM STEEL CORPORATION | workplace safety or health violation | 2002 | OSHA | $5,200 |
| Ambassador Steel Fabrication, LLC | labor relations violation | 2007 | NLRB | $5,084 |
| California Steel Industries Inc | environmental violation | 2018 | CA-SCAQMD | $5,000 |
| California Steel Industries Inc. | environmental violation | 2002 | CA-SCAQMD | $5,000 |
| NUCOR YAMATO STEEL, INC. | workplace safety or health violation | 2018 | OSHA | $5,000 |
| AMBASSADOR STEEL FABRICATION, LLC DBA HARRIS REBAR | workplace safety or health violation | 2020 | OSHA | $5,000 |
| Nucor-Yamato Steel | environmental violation | 2005 | EPA | $5,000 |