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476 manufacturing — heavy employers in Illinois have substantive broker records on their Form 5500 filings. Median disclosed broker cost in this group runs about $20 per participant per month. Open any company to see its broker of record, disclosed compensation, and benefit lines — or step back to all Illinois employers.
| Company | Industry | Plan type | Participants | Latest filing | Broker comp |
|---|---|---|---|---|---|
| NEHRING ELECTRICAL WORKS COMPANY | Manufacturing — Heavy | Self-funded | 167 | 2022 | Disclosed |
| SERFILCO FILTRATION CORPORATION | Manufacturing — Heavy | Self-funded | 165 | 2025 | Disclosed |
| TEMPCO ELECTRIC HEATER CORPORATION | Manufacturing — Heavy | Fully insured | 165 | 2025 | Disclosed |
| A. L. HANSEN MANUFACTURING | Manufacturing — Heavy | Self-funded | 165 | 2025 | Disclosed |
| ALP LIGHTING & CEILING PRODUCTS | Manufacturing — Heavy | Self-funded | 164 | 2025 | Disclosed |
| UNITED MACHINING NORTH AMERICA, LLC | Manufacturing — Heavy | Fully insured | 161 | 2025 | Disclosed |
| DUDEK & BOCK SPRING MFG. CO. | Manufacturing — Heavy | Self-funded | 161 | 2024 | Disclosed |
| THE CHICAGO FAUCETS | Manufacturing — Heavy | Self-funded | 161 | 2024 | Disclosed |
| ACME INDUSTRIAL COMPANY | Manufacturing — Heavy | Fully insured | 160 | 2025 | Disclosed |
| ELECTRI-FLEX COMPANY | Manufacturing — Heavy | Self-funded | 160 | 2025 | Disclosed |
| MARTIN AUTOMATIC, INC. | Manufacturing — Heavy | Self-funded | 160 | 2025 | Disclosed |
| VIKING PUMP, INC., A UNIT OF IDEX CORPORATION | Manufacturing — Heavy | Self-funded | 159 | 2025 | Disclosed |
| ELGIN INDUSTRIES, INC. | Manufacturing — Heavy | Self-funded | 158 | 2025 | Disclosed |
| MENNIES MACHINE COMPANY | Manufacturing — Heavy | Self-funded | 157 | 2024 | Disclosed |
| HARGER INC. | Manufacturing — Heavy | Fully insured | 156 | 2025 | Disclosed |
| CONSERVATION TECHNOLOGY OF IL, LLC DBA | Manufacturing — Heavy | Fully insured | 156 | 2024 | Disclosed |
| BISCO INC | Manufacturing — Heavy | Self-funded | 155 | 2025 | Disclosed |
| ESTWING MANUFACTURING CO, INC. | Manufacturing — Heavy | Self-funded | 154 | 2024 | Disclosed |
| FABRICATION TECHNOLOGIES, LLC | Manufacturing — Heavy | Self-funded | 153 | 2024 | Disclosed |
| METROPOLITAN INDUSTRIES, INC. | Manufacturing — Heavy | Self-funded | 152 | 2024 | Disclosed |
| T/CCI MANUFACTURING, L.L.C. EMPLOYEE BENEFIT PLAN | Manufacturing — Heavy | Fully insured | 151 | 2024 | Disclosed |
| E.J. BASLER COMPANY | Manufacturing — Heavy | Fully insured | 151 | 2024 | Disclosed |
| A-Z INDUSTRIES | Manufacturing — Heavy | Fully insured | 150 | 2024 | Disclosed |
| MATTOON PRECISION MANUFACTURING, INC. | Manufacturing — Heavy | Fully insured | 149 | 2025 | Disclosed |
| MECHANICAL TOOL & ENGINEERING CO | Manufacturing — Heavy | Self-funded | 148 | 2025 | Disclosed |
| AMERICAN ALUMINUM EXTRUSION CO., LLC | Manufacturing — Heavy | Self-funded | 148 | 2022 | Disclosed |
| ROBERTSHAW CONTROLS COMPANY | Manufacturing — Heavy | Self-funded | 147 | 2025 | Disclosed |
| UNITED CHEMI-CON, INC. | Manufacturing — Heavy | Self-funded | 145 | 2024 | Disclosed |
| AMERICAN STANDARD CIRCUITS, LLC | Manufacturing — Heavy | Self-funded | 145 | 2024 | Disclosed |
| ARC-TRONICS, INC. | Manufacturing — Heavy | Self-funded | 144 | 2025 | Disclosed |
| CAMBIUM NETWORKS, INC. | Manufacturing — Heavy | Self-funded | 144 | 2025 | Disclosed |
| INDUSTRIAL HARD CHROME, LTD. | Manufacturing — Heavy | Self-funded | 143 | 2024 | Disclosed |
| UCAL SYSTEMS, INC. | Manufacturing — Heavy | Fully insured | 143 | 2024 | Disclosed |
| K&K SCREW PRODUCTS, L.L.C. KKSP PRECISION MACHINING | Manufacturing — Heavy | Self-funded | 143 | 2025 | Disclosed |
| ROBERTSHAW CONTROLS COMPANY | Manufacturing — Heavy | Self-funded | 143 | 2023 | Disclosed |
| NALBACH COMPANIES, ET AL | Manufacturing — Heavy | Fully insured | 141 | 2024 | Disclosed |
| ARROW GEAR LLC | Manufacturing — Heavy | Fully insured | 141 | 2025 | Disclosed |
| FORGE RESOURCES GROUP | Manufacturing — Heavy | Self-funded | 141 | 2025 | Disclosed |
| PRECISIONAL LLC | Manufacturing — Heavy | Self-funded | 141 | 2025 | Disclosed |
| THE RDI GROUP, INC. | Manufacturing — Heavy | Self-funded | 140 | 2024 | Disclosed |
| ABLE ELECTROPOLISHING CO., INC. | Manufacturing — Heavy | Self-funded | 139 | 2025 | Disclosed |
| O & K AMERICAN CORP. | Manufacturing — Heavy | Self-funded | 139 | 2025 | Disclosed |
| LMT ONSRUD LP | Manufacturing — Heavy | Self-funded | 139 | 2025 | Disclosed |
| MAZAK OPTONICS CORPORATION | Manufacturing — Heavy | Self-funded | 138 | 2025 | Disclosed |
| INTERMATIC, INC. | Manufacturing — Heavy | Self-funded | 138 | 2025 | Disclosed |
| CLINGAN STEEL, INC. | Manufacturing — Heavy | Fully insured | 138 | 2024 | Disclosed |
| HEADLY MANUFACTURING CO. | Manufacturing — Heavy | Self-funded | 137 | 2022 | Disclosed |
| BUDNICK CONVERTING, INC. | Manufacturing — Heavy | Self-funded | 137 | 2025 | Disclosed |
| COSMOS MANUFACTURING, INC. | Manufacturing — Heavy | Fully insured | 136 | 2024 | Disclosed |
| SHOUP MANUFACTURING CO | Manufacturing — Heavy | Self-funded | 136 | 2024 | Disclosed |
| FRASCA INTERNATIONAL INC | Manufacturing — Heavy | Self-funded | 136 | 2022 | Disclosed |
| ACE METAL CRAFTS COMPANY | Manufacturing — Heavy | Fully insured | 135 | 2025 | Disclosed |
| MIDTRONICS, INC. | Manufacturing — Heavy | Self-funded | 135 | 2025 | Disclosed |
| BELLE AIRE FRAGRANCES, LLC DBA BELLE AIRE CREATIONS | Manufacturing — Heavy | Self-funded | 134 | 2025 | Disclosed |
| GUARDIAN ELECTRIC MANUFACTURING COMPANY | Manufacturing — Heavy | Fully insured | 133 | 2025 | Disclosed |
| STERN PINBALL, INC | Manufacturing — Heavy | Fully insured | 133 | 2022 | Disclosed |
| LUMINII, LLC | Manufacturing — Heavy | Self-funded | 133 | 2025 | Disclosed |
| COLONY DISPLAY, LLC | Manufacturing — Heavy | Self-funded | 133 | 2024 | Disclosed |
| HYDRAULIC TECHNOLOGIES USA LLC | Manufacturing — Heavy | Self-funded | 133 | 2025 | Disclosed |
| SIMON HEGELE HEALTHCARE SOLUTIONS, LLC | Manufacturing — Heavy | Self-funded | 132 | 2024 | Disclosed |
| MARUICHI LEAVITT PIPE & TUBE, LLC | Manufacturing — Heavy | Self-funded | 131 | 2025 | Disclosed |
| TRM NRE ACQUISITIONS, LLC | Manufacturing — Heavy | Self-funded | 131 | 2025 | Disclosed |
| KOLCRAFT ENTERPRISES INC | Manufacturing — Heavy | Self-funded | 130 | 2024 | Disclosed |
| SAUNDERS MIDWEST LLC | Manufacturing — Heavy | Fully insured | 130 | 2024 | Disclosed |
| HEIDENHAIN HOLDING, INC. | Manufacturing — Heavy | Self-funded | 130 | 2025 | Disclosed |
| INGERSOLL MACHINE TOOLS, INC. | Manufacturing — Heavy | Self-funded | 129 | 2025 | Disclosed |
| INDUSTRIAL MAINTENACE, WELDING & MACHINING COMPANY, INC. | Manufacturing — Heavy | Self-funded | 129 | 2024 | Disclosed |
| PEERLESS PREMIER APPLIANCE COMPANY | Manufacturing — Heavy | Self-funded | 128 | 2025 | Disclosed |
| BUKAS LIGHTING GROUP INC | Manufacturing — Heavy | Self-funded | 128 | 2025 | Disclosed |
| CERATIZIT CHICAGO INC. | Manufacturing — Heavy | Self-funded | 126 | 2021 | Disclosed |
| ACME INDUSTRIES, INC. | Manufacturing — Heavy | Self-funded | 125 | 2025 | Disclosed |
| SWISS PRECISION MACHINING LLC | Manufacturing — Heavy | Fully insured | 123 | 2023 | Disclosed |
| MINUTEMAN INTERNATIONAL | Manufacturing — Heavy | Fully insured | 122 | 2024 | Disclosed |
| CONCENTRIC ROCKFORD INC. | Manufacturing — Heavy | Self-funded | 122 | 2025 | Disclosed |
| CHS ACQUISITION CORP | Manufacturing — Heavy | Self-funded | 122 | 2025 | Disclosed |
| CENTRAL ILLINOIS MANUFACTURING COMPANY | Manufacturing — Heavy | Fully insured | 122 | 2025 | Disclosed |
| SEDECAL US HOLDINGS, INC. | Manufacturing — Heavy | Fully insured | 122 | 2024 | Disclosed |
| SAPORITO FINISHING COMPANY | Manufacturing — Heavy | Fully insured | 121 | 2024 | Disclosed |
| PRESTON INDUSTRIES INC | Manufacturing — Heavy | Fully insured | 119 | 2025 | Disclosed |
| UNYTITE, INC. | Manufacturing — Heavy | Self-funded | 119 | 2024 | Disclosed |
| SEATING CONCEPTS, INC. | Manufacturing — Heavy | Self-funded | 119 | 2025 | Disclosed |
| NEW SPS, LLC | Manufacturing — Heavy | Self-funded | 119 | 2025 | Disclosed |
| PRIMA POWER NORTH AMERICA | Manufacturing — Heavy | Fully insured | 118 | 2025 | Disclosed |
| RWI HOLDINGS, INC. | Manufacturing — Heavy | Self-funded | 117 | 2024 | Disclosed |
| RACK BUILDERS, INC. | Manufacturing — Heavy | Fully insured | 116 | 2025 | Disclosed |
| BRETFORD MANUFACTURING, INC. | Manufacturing — Heavy | Self-funded | 116 | 2024 | Disclosed |
| FETCO | Manufacturing — Heavy | Fully insured | 116 | 2024 | Disclosed |
| WORLD WIDE FITTINGS, INC. | Manufacturing — Heavy | Fully insured | 115 | 2024 | Disclosed |
| LOVEJOY INDUSTRIES, INC. | Manufacturing — Heavy | Fully insured | 115 | 2024 | Disclosed |
| NATURAL FIBER WELDING, INC. | Manufacturing — Heavy | Self-funded | 115 | 2024 | Disclosed |
| PEWAG, INC. | Manufacturing — Heavy | Self-funded | 113 | 2025 | Disclosed |
| KAY MANUFACTURING CO. | Manufacturing — Heavy | Self-funded | 113 | 2021 | Disclosed |
| J&M PLATING, INC. | Manufacturing — Heavy | Self-funded | 113 | 2024 | Disclosed |
| PMI KYOTO PACKAGING SYSTEMS | Manufacturing — Heavy | Self-funded | 113 | 2024 | Disclosed |
| COLONY DISPLAY MANUFACTURING LLC | Manufacturing — Heavy | Self-funded | 113 | 2025 | Disclosed |
| BRANDT INDUSTRIES USA LTD | Manufacturing — Heavy | Fully insured | 112 | 2025 | Disclosed |
| CHICAGO RIVET & MACHINE CO. | Manufacturing — Heavy | Fully insured | 112 | 2024 | Disclosed |
| KENMODE TOOL & ENGINEERING, INC. | Manufacturing — Heavy | Self-funded | 112 | 2024 | Disclosed |
| PRECISION PLATING COMPANY, INC. | Manufacturing — Heavy | Fully insured | 112 | 2024 | Disclosed |
| SCHULTES PRECISION MANUFACTURING, INC. | Manufacturing — Heavy | Self-funded | 111 | 2025 | Disclosed |
Sourced from Form 5500 filings as submitted to the U.S. Department of Labor. Dataset refreshed October 7, 2026. Plan years are labeled by the year they begin, so a July 2024 – June 2025 plan year is 2024. Filings may lag 12–18 months behind the current plan year.