Workplace injury records in Chelmsford, MA
208 establishments in Chelmsford filed an OSHA Form 300A summary at least once between 2016 and 2025. The largest industries here: Manufacturing (52), Health Care and Social Assistance (32), Retail Trade (21). 109 had 30 to 200 employees at their latest filing.
| Establishment | Industry | Avg. employees (last filing) | Years filed | TRIR (last filing) | Industry median TRIR |
|---|---|---|---|---|---|
| 08191 - Store 8191 Chelmsford Hannaford | Grocery Stores | 166 | 2022–2024 · 2 | 3.35 | 3.36 |
| 08191 - Store # 8191 Chelmsford Hannaford | Grocery Stores | 155 | 2023–2025 · 2 | 4.85 | 3.16 |
| 100480 Stop & Shop | — | 131 | 2021 · 1 | 4.85 | 4.50 |
| 10072 SUMMER PLACE | Senior Living | 13 | 2021–2024 · 3 | 0.00 | 5.15 |
| 113 Park Road Seven Hills Foundation | Human Service | 2 | 2023 · 1 | 0.00 | 0.00 |
| 113 Park Road Chelmsford Seven Hills Foundation | Human Services | 5 | 2024 · 1 | 0.00 | 0.38 |
| 1300 - Rockwell Automa Ricoh USA Inc | Office Equipment | 4 | 2017–2025 · 6 | 0.00 | 0.00 |
| 1300 - Rockwell Automa Ricoh USA Inc | Office Equipment | 4 | 2021–2024 · 3 | 0.00 | 0.00 |
| 16 BOSTON CINTAS | Industrial Launderers | 232 | 2019–2025 · 4 | 1.30 | 2.16 |
| 16 - BOSTON CINTAS | Industrial Launderers | 201 | 2016–2019 · 3 | 1.00 | 3.43 |
| 16 - BOSTON CINTAS | Industrial Launderers | 231 | 2021–2024 · 3 | 1.73 | 2.26 |
| 16064 Comcast | — | 485 | 2016–2017 · 2 | 0.69 | 2.76 |
| 1800 CentiMark Corporation | Roofing contractors | 78 | 2016–2023 · 6 | 6.27 | 2.19 |
| 1800 CentiMark Corporation | Roofing contractors | 71 | 2021–2024 · 3 | 0.00 | 1.96 |
| 2 Elizabeth Analog Devices, Inc. | Diodes, solid-state (e.g., germanium, silicon), manufacturing | 156 | 2017–2025 · 6 | 0.00 | 0.23 |
| 2 Elizabeth Analog Devices, Inc. | Diodes, solid-state (e.g., germanium, silicon), manufacturing | 154 | 2021–2024 · 3 | 0.00 | 0.12 |
| 20 Alpha Rd. Chelmsford, MA Analog Devices, Inc. | Diodes, solid-state (e.g., germanium, silicon), manufacturing | 247 | 2017–2025 · 6 | 1.32 | 0.23 |
| 20 Alpha Rd. Chelmsford, MA Analog Devices, Inc. | Diodes, solid-state (e.g., germanium, silicon), manufacturing | 250 | 2021–2024 · 3 | 0.44 | 0.12 |
| 25 Industrial Avenue Comcast | — | 130 | 2017–2019 · 3 | 0.00 | 1.42 |
| 2903 Wal-Mart Stores East, LP | All Other General Merchandise Stores | 158 | 2021 · 1 | 5.73 | 5.19 |
| 2967-MA169 | Analytical Laboratory Instruments Manufacturing | 77 | 2019–2020 · 2 | 1.40 | 0.17 |
| 2967-MA169 Ametek | Analytical Laboratory Instruments Manufacturing | 67 | 2021–2022 · 2 | 1.45 | 0.31 |
| 300 Billerica Road Chelmsford MA The RMR Group LLC | Commercial property managing | 1 | 2020 · 1 | 94.47 | 0.00 |
| 38 Old Stage Road Seven Hills Foundation | Human Service | 6 | 2023 · 1 | 0.00 | 0.00 |
| 38 Old Stage Road Chelmsford Seven Hills Foundation | Human Services | 8 | 2024 · 1 | 0.00 | 0.38 |
| 432 ABC Supply Co., inc ABC Supply Co | Wholesale Building Materials | 13 | 2016–2017 · 2 | 26.26 | 3.39 |
| 44710 BVLS Chelmsford BrightView | Landscaping Services | 47 | 2021–2024 · 3 | 4.52 | 0.00 |
| 44710 - BVLS - Chelmsford BrightView Landscape Services LLC | Landscaping Services | 41 | 2023 · 1 | 2.48 | 0.00 |
| 467 - Chelmsford Publ Ricoh USA Inc | Office Equipment | 1 | 2016–2025 · 6 | 0.00 | 0.00 |
| 467 - Chelmsford Publ Ricoh USA Inc | Office Equipment | 1 | 2021–2024 · 3 | 0.00 | 0.00 |
| 49450 - BVTS - Boston Tree BrightView Landscape Services LLC | Landscaping Services | 4 | 2023 · 1 | 0.00 | 0.00 |
| 49450 Closed BVTS Boston Tree BrightView | Landscaping Services | — | 2024 · 1 | — | 0.00 |
| 5 Omni Way Chelmsford MA 01824 Comcast | — | 476 | 2018–2019 · 2 | 1.65 | 1.42 |
| 51017 Adapt Health LLC | Medical | 5 | 2021–2022 · 2 | 0.00 | 0.00 |
| 529 CHELMSFORD Kohls Inc. | — | 89 | 2016–2025 · 7 | 6.93 | 2.56 |
| 529 Chelmsford Kohls Inc | Department Store | 89 | 2022–2024 · 2 | 2.28 | 2.78 |
| 5306- SUMMER PLACE Holiday Retirement Corp | NULL | 31 | 2016 · 1 | 0.00 | 6.19 |
| 5603- STERLING PLACE Holiday Retirement Corp | NULL | 32 | 2016 · 1 | 3.63 | 6.19 |
| 5875 - Boston North TruGreen | Lawn Care Services | 74 | 2021–2022 · 2 | 7.83 | 0.00 |
| 6 San Mateo Drive Seven Hills Foundation | Human Service | 8 | 2023 · 1 | 0.00 | 0.00 |
| 6 San Mateo Drive Chelmsford Seven Hills Foundation | Human Services | 9 | 2024 · 1 | 0.00 | 0.38 |
| 7 Technology Dr Seven Hills Foundation | Human Service | 7 | 2023 · 1 | 0.00 | 0.00 |
| 8191 Hannaford Bros. Company, LLC | Supermrkts & other grocery stores | 153 | 2016–2020 · 5 | 1.10 | 4.24 |
| 8191 HANNAFORD | Supermrkts & other grocery stores | 152 | 2021 · 1 | 2.14 | 4.50 |
| 9288-414 Genesis HealthCare | Healthcare Facility | 119 | 2021–2022 · 2 | 55.97 | 6.30 |
| 9692-96920007-1 Beacon Mobility | — | 31 | 2022 · 1 | 0.00 | 2.79 |
| 9692-96920015-1 Beacon Mobility | — | 136 | 2022 · 1 | 0.00 | 2.79 |
| ABC Supply 432 ABC Supply | Roofing Siding and Insulation Merchant Wholesalers | 10 | 2025 · 1 | 8.77 | 0.00 |
| Accutronics LLC | Electronics Manufaturing | 80 | 2023–2025 · 2 | 1.56 | 0.23 |
| Accutronics LLC | Electronics Manufaturing | 80 | 2024 · 1 | 0.00 | 0.12 |
| Alexan Chelmsford Maple Multi-Family SE Contractor, LLC | Residential construction, multifamily, general contractors | 4 | 2024 · 1 | 132.28 | 0.00 |
| Alternative Supports Inc | Home health care agencies | 134 | 2025 · 1 | 0.96 | 1.04 |
| API of NH - Chelmsford API of NH / Delta T | Central heating equipment, warm-air, merchant wholesalers | 6 | 2022–2024 · 2 | 0.00 | 0.00 |
| API of NH Delta T: Chelmsford API of NH Delta T | Heating equipment, warm air (i.e. forced air), merchant wholesalers | 6 | 2023 · 1 | 0.00 | 0.00 |
| Assurance Technology Corporation Chelmsford Assurance Technology Corporation | Engineering research and development laboratories or services | 64 | 2023 · 1 | 0.00 | 0.00 |
| Atlantic Restoration and Contracting Inc | Masonry pointing, cleaning or caulking | 33 | 2022 · 1 | 0.00 | 2.30 |
| B-XII Chelmsford LLC | Assisted Living Facilities for the Elderly | 61 | 2016–2018 · 3 | 5.42 | 6.11 |
| Bay Crane Northeast, LLC. - New Hampshire The Bay Crane Companies, Inc. | Crane rental with operator | 13 | 2025 · 1 | 0.00 | 0.00 |
| Boston - #42 Structural Preservation Systems, LLC | Concrete repair | 68 | 2022–2024 · 2 | 0.00 | 1.96 |
| Boston - #42 Structural Preservation Systems, LLC | Concrete repair | 75 | 2023–2025 · 2 | 1.42 | 1.60 |
| Boston North TruGreen | Lawn Care | 58 | 2020–2025 · 3 | 4.23 | 0.00 |
| Bridgewell Counseling Service - Chelmsford Bridgewell | Clinical psychologists' offices (e.g., centers, clinics) | 34 | 2016–2018 · 2 | 0.00 | 0.00 |
| Brooks Automation US, LLC. | Semiconductor making machinery manufacturing | 849 | 2022–2024 · 2 | 0.35 | 1.48 |
| Brooks Automation, Inc. - Chelmsford | Semiconductor making machinery manufacturing | 804 | 2017–2025 · 6 | 0.48 | 1.38 |
| CB Chelmsford Chadwick BaRoss Inc | Road construction and maintenance machinery merchant wholesalers | 21 | 2024 · 1 | 0.00 | 0.00 |
| CBRE-X3-Chelmsford CBRE Inc | Activities related to Real Estate and Facilities Support Services | 1 | 2024 · 1 | 0.00 | 0.00 |
| CBRE-X3-Chelmsford CBRE Inc | Activities related to Real Estate/Facilities Support Services | 1 | 2025 · 1 | 0.00 | 0.00 |
| CDM Constructors Inc. - Chelmsford Office CDM Smith Inc. | Pumping station, water and sewage system, construction | 34 | 2017 · 1 | 0.00 | 1.32 |
| Chadwick-Baross Inc Chelmsford | Road construction and maintenance machinery merchant wholesalers | 24 | 2025 · 1 | 0.00 | 0.00 |
| Chelmsford 3M Company | — | 70 | 2016–2025 · 6 | 4.26 | 1.96 |
| Chelmsford Sterling-Chelmsford | Motor freight carrier, general, long-distance, truckload (TL) | 95 | 2016–2020 · 3 | 5.97 | 3.38 |
| Chelmsford | Cable television hookup contractors | 90 | 2017 · 1 | 10.73 | 2.14 |
| Chelmsford Sterling-Chelmsford | Motor freight carrier, general, long-distance, truckload (TL) | 92 | 2021 · 1 | 3.05 | 2.50 |
| Chelmsford 3M Company | Tube, nonrigid plastics, manufacturing | 95 | 2021–2022 · 2 | 3.16 | 2.59 |
| Chelmsford 3M Company | Tube, nonrigid plastics, manufacturing | 87 | 2023 · 1 | 4.59 | 2.41 |
| Chelmsford 3M Company | — | 71 | 2024 · 1 | 1.35 | 2.12 |
| CHELMSFORD (MACHE) United Parcel Service | Courier Services Except by Air | 1,943 | 2016–2018 · 3 | 13.12 | 8.04 |
| Chelmsford 7 Technology Dr Seven Hills Foundation | Human Services | 9 | 2024 · 1 | 0.00 | 0.00 |
| Chelmsford Lumber Company | Building materials supply dealers | 19 | 2023 · 1 | 5.77 | 3.26 |
| Chelmsford Lumber Company | Building materials supply dealers | 18 | 2024 · 1 | 0.00 | 3.10 |
| Chelmsford Water District | Water treatment and distribution | 21 | 2021–2022 · 2 | 4.56 | 1.27 |
| Chelmsford Water District | Water treatment and distribution | 16 | 2025 · 1 | 0.00 | 0.00 |
| CHELMSFORD, MA Packaging Corporation of America | — | 29 | 2016–2020 · 4 | 0.00 | 1.91 |
| Chelmsford, MA Harte Hanks | Direct mail advertising services | 65 | 2017 · 1 | 0.00 | 0.00 |
| CHELMSFORD, MA Packaging Corporation of America | — | 29 | 2021 · 1 | 0.00 | 2.25 |
| Chelmsford, MA Transcat, Inc. | calibration services | 113 | 2025 · 1 | 0.99 | 0.00 |
| Clover Telecom Asset Management, LLC - Chelmsford Clover Telecom Asset Management, LLC | Telecommunications management consulting services | 7 | 2016 · 1 | 18.39 | 0.00 |
| CMOP GardaWorld Federal Services, LLC. | Protection services (except armored car, security systems), personal or property | 134 | 2025 · 1 | 7.04 | 0.00 |
| ColorWorks Paint and Decorating Center 3 Colorworks Acquisition LLC | Paint stores | 5 | 2023–2025 · 2 | 20.48 | 2.10 |
| ColorWorks Paint and Decorating Center 3 Colorworks Acquisition LLC | Paint stores | 6 | 2024 · 1 | 0.00 | 3.10 |
| CommScope Technologies LLC (Chelmsford, MA) CommScope | Acoustical engineering consulting services | 55 | 2018 · 1 | 0.00 | 0.00 |
| DERMCARE PHYSICIAN & SURGEONS-Chelmsford,MA Adult & Pediatric Dermatology, PC | Physicians' (except mental health) offices (e.g., centers, clinics) | 18 | 2023–2025 · 2 | 16.91 | 0.00 |
| DERMCARE PHYSICIAN & SURGEONS-Chelmsford,MA Adult & Pediatric Dermatology, PC | Physicians' (except mental health) offices (e.g., centers, clinics) | 17 | 2024 · 1 | 9.98 | 0.00 |
| Edwards Vacuum- Chelmsford Edwards Vacuum | Compressors, air and gas, general purpose-type, manufacturing | 229 | 2020 · 1 | 0.75 | 1.72 |
| Edwards Vacuum- Chelmsford Edwards Vacuum | Compressors, air and gas, general purpose-type, manufacturing | 255 | 2021 · 1 | 0.32 | 2.04 |
| Emanouil Brothers, INC. | Landscape care and maintenance services | 86 | 2023 · 1 | 14.31 | 0.00 |
| Essco Calibration Laboratory Walsh Engineering Services, Inc. | Acoustics testing laboratories or services | 72 | 2017 · 1 | 1.31 | 0.00 |
| Four In One LLC | Canning fruits and vegetables | 45 | 2018 · 1 | 2.11 | 3.96 |
| Greater Boston Region-25 Industrial Avenue | — | 118 | 2020 · 1 | 0.00 | 1.91 |
| Greater Boston Region-5 Omni Way Chelmsford | — | 409 | 2020 · 1 | 0.00 | 1.91 |
| Greater Boston Region-6 Omni Way | — | 64 | 2020 · 1 | 12.07 | 1.91 |
| Gustavo Preston Company | Plumbing equipment merchant wholesalers | 88 | 2016–2023 · 6 | 3.60 | 0.00 |
| Gustavo Preston Company Gustavo Preston Company, Inc. | Plumbing equipment merchant wholesalers | 79 | 2021–2022 · 2 | 2.60 | 1.06 |
| Hub Foundation Hub Foundation Co., Inc. | Foundation drilling contractors | 85 | 2021–2024 · 3 | 0.00 | 0.00 |
| Hub Foundation Co Hub Foundation | Pile driving, building foundation | 101 | 2017–2025 · 6 | 3.63 | 0.00 |
| Hydroserve, LLC dba Gustavo Preston Company | Valves, plumbing and heating, merchant wholesalers | 88 | 2023 · 1 | 3.60 | 0.00 |
| Hydroserve, LLC dba Gustavo Preston Company | Valves, plumbing and heating, merchant wholesalers | 94 | 2024 · 1 | — | 0.00 |
| Incompass Human Services | Activity centers for disabled persons, the elderly, and persons diagnosed with intellectual and developmental disabilities | 642 | 2022–2024 · 2 | — | 0.00 |
| InTouch Labels & Packaging Avery Products Corporation | Printing, flexographic (except books, grey goods) | 25 | 2023 · 1 | 0.00 | 1.67 |
| IPS - Chelmsford, MA IPS - Integrated Project Services, LLC | Engineering services | 675 | 2018 · 1 | 0.00 | 0.00 |
| KRE-BSL HUSKY CHELMSFORD OPERATIONS LLC | Assisted Living Facilities for the Elderly | 62 | 2019–2025 · 4 | 0.00 | 4.90 |
| KRE-BSL HUSKY CHELMSFORD OPERATIONS LLC | Assisted Living Facilities for the Elderly | 58 | 2021–2024 · 3 | 5.66 | 5.15 |
| LifeLinks CLASS LifeLinks,Inc. | Intellectual and developmental disability facilities (e.g., homes, hospitals, intermediate care facilities), residential | 350 | 2020 · 1 | 4.59 | 0.00 |
| Lockheed Martin Corporation Chelmsford (1553) Lockheed Martin Corporation | — | 438 | 2016–2025 · 7 | 0.00 | 0.85 |
| Lockheed Martin Corporation Chelmsford (1553) Lockheed Martin Corporation | — | 419 | 2021–2024 · 3 | 0.43 | 0.84 |
| Lockheed Martin Missiles and Fire Control Lockheed Martin Missles and Fire Control | Guided missile and space vehicle manufacturing | 338 | 2019 · 1 | 0.00 | 1.14 |
| MA - Chelmsford, 5 Omni Way Comcast Cable Communications Management, LLC | Cable and Other Subscription Programming | 144 | 2022 · 1 | 0.00 | 2.80 |
| MA - Chelmsford, 5 Omni Way Comcast Cable Communications Management, LLC | Cable and Other Subscription Programming | 98 | 2023 · 1 | 0.00 | 0.38 |
| MA - Chelmsford, 6 Omni Way Comcast Cable Communications Management, LLC | Cable and Other Subscription Programming | 94 | 2022 · 1 | 8.53 | 2.80 |
| MA - Chelmsford, 6 Omni Way Comcast Cable Communications Management, LLC | Cable and Other Subscription Programming | 80 | 2023 · 1 | 10.82 | 0.38 |
| MA CMOP DLH Holdings Corporation | All Other Professional, Scientific, and Technical Services | 125 | 2021–2022 · 2 | 6.15 | 1.86 |
| MA.CHELM.2 - Ricoh Americas Holdings, Inc. Ricoh USA Inc | Office Equipment | 1 | 2019–2020 · 2 | 0.00 | 0.00 |
| MA169 SPECTRO SCIENTIFIC Ametek, Inc SPECTRO SCIENTIFIC | Analytical Laboratory Instruments Manufacturing | 65 | 2023 · 1 | 0.00 | 0.00 |
| MA169 SPECTRO SCIENTIFIC Ametek, Inc SPECTRO SCIENTIFIC | Analytical Laboratory Instruments Manufacturing | 63 | 2024 · 1 | 0.00 | 0.00 |
| MA169 SPECTRO SCIENTIFIC Ametek, Inc SPECTRO SCIENTIFIC | Analytical Laboratory Instruments Manufacturing | 64 | 2025 · 1 | 1.58 | 0.00 |
| MAC01 Comcast Cable Communications Management, LLC | Cable and Other Subscription Programming | 86 | 2024 · 1 | 0.00 | 0.00 |
| MAC03 Comcast Cable Communications Management, LLC | Cable and Other Subscription Programming | 79 | 2024 · 1 | 4.22 | 0.00 |
| MACHE - CHELMSFORD UPS | Couriers and Express Delivery Services | 1,530 | 2019–2025 · 3 | 14.43 | 7.17 |
| MACHE - CHELMSFORD United Parcel Service Inc | Couriers and Express Delivery Services | 1,645 | 2021–2024 · 3 | 10.14 | 7.82 |
| MALOW Fastenal Company | Hardware Merchant Wholesalers | 7 | 2016–2017 · 2 | 0.00 | 0.00 |
| Market Basket #04 Demoulas Super Markets Inc | — | 422 | 2021–2022 · 2 | 1.20 | 4.52 |
| Market Basket 04 Demoulas Super Markets Inc | — | 327 | 2016–2025 · 5 | 0.59 | 3.16 |
| Market Basket 04 Demoulas Super Markets Inc | — | 317 | 2021–2024 · 3 | 0.59 | 3.36 |
| MEC Electrical & Technologies Inc MEC Electrical & Technologies, Inc | Electric contracting | 120 | 2023–2025 · 2 | 7.10 | 1.10 |
| MEC Electrical Contractors Inc | Electrical contractors | 42 | 2018 · 1 | 0.00 | 2.26 |
| MEC Electrical Contractors Inc | Electric contracting | 95 | 2021–2024 · 3 | 4.46 | 1.23 |
| Milltown Office Milltown Plumbing & Heating, Inc. | Plumbing, Heating, Cooling and Electrical | 87 | 2023 · 1 | 8.63 | 1.38 |
| Milltown Plumbing & Heating, Inc. | Plumbing and heating contractors | 88 | 2022–2024 · 2 | 7.18 | 1.23 |
| MTC Asahi Kasei Bioprocess America, Inc. | Laboratory equipment, dental and medical, merchant wholesalers | 2 | 2019–2025 · 2 | 0.00 | 0.00 |
| New England Foliage LLC | Plant maintenance services | 47 | 2024 · 1 | 0.00 | 0.00 |
| New England Foliage LLC | Plant maintenance services | 42 | 2025 · 1 | 0.00 | 0.00 |
| NG - MEADOWBROOK SS Cianbro | — | 9 | 2016–2017 · 2 | 0.00 | 0.00 |
| North Reading Transportation | School bus services | 2,253 | 2023 · 1 | 2.83 | 2.79 |
| Northeast Med Staff Kelia, Inc | Temporary staffing services | 75 | 2016 · 1 | 3.08 | 0.00 |
| PACE INDUSTRIES JEL PACE INDUSTRIES Holdings Inc. | Primers, paint, manufacturing | 67 | 2016–2025 · 7 | 1.64 | 1.20 |
| PACE INDUSTRIES JEL PACE INDUSTRIES Holdings Inc. | Primers, paint, manufacturing | 58 | 2021–2024 · 2 | 0.00 | 1.56 |
| Palm Manor Genesis HealthCare | Nursing homes | 157 | 2016 · 1 | 7.03 | 5.94 |
| Palm Springs Operator LLC | Skilled nursing facilities | 119 | 2016–2025 · 5 | 10.61 | 4.17 |
| Patriot Ambulance Inc Patriot Ambulance Inc. | Ambulance services, air or ground | 87 | 2022–2024 · 2 | 6.15 | 1.55 |
| Patriot Ambulance Inc Patriot Ambulance Inc. | Ambulance services, air or ground | 84 | 2023 · 1 | 27.04 | 2.89 |
| Patriot Ambulance Inc. PATRIOT AMBULANCE | Ambulance services, air or ground | 130 | 2016–2020 · 5 | 14.62 | 3.18 |
| Patriot Ambulance Inc. PATRIOT AMBULANCE | Ambulance services, air or ground | 91 | 2021 · 1 | 24.76 | 4.63 |
| Performance Building Co. Inc. Performance Building Co.Inc. | Residential construction, multifamily, general contractors | 23 | 2019–2025 · 4 | 0.00 | 0.00 |
| Performance Building Co. Inc. Performance Building Co.Inc. | Residential construction, multifamily, general contractors | 23 | 2021–2024 · 3 | 16.59 | 0.00 |
| PLANT 172-TEXTILE MA Publishers Circulation Fulfillment Inc | Direct Selling Establishments | 5 | 2018–2023 · 4 | 0.00 | 1.90 |
| PLANT 172-TEXTILE MA Publishers Circulation Fulfillment Inc | Direct Selling Establishments | 7 | 2021–2022 · 2 | 0.00 | 2.34 |
| Qorvo - Chelmsford (Apollo Dr) Qorvo Inc | Semiconductor devices manufacturing | 13 | 2021–2024 · 3 | 0.00 | 0.12 |
| Qorvo - Chelmsford (Apollo Dr) Qorvo Inc | Semiconductor devices manufacturing | 8 | 2023–2025 · 2 | 0.00 | 0.23 |
| Qorvo - Chelmsford, MA Qorvo, Inc | Semiconductor devices manufacturing | 119 | 2016–2025 · 7 | 0.00 | 0.23 |
| Qorvo - Chelmsford, MA Qorvo, Inc | Semiconductor devices manufacturing | 90 | 2021–2024 · 3 | 0.00 | 0.12 |
| Rockwell Automation - Chelmsford Rockwell Automation, Inc. | Relays, electrical and electronic, manufacturing | 123 | 2024 · 1 | 0.81 | 1.05 |
| Rockwell Automation - Chelmsford Rockwell Automation, Inc. | Relays, electrical and electronic, manufacturing | 94 | 2025 · 1 | 0.00 | 1.06 |
| Schleifring NA | Slip rings for motors and generators manufacturing | 78 | 2022 · 1 | 2.56 | 1.37 |
| SODEXO AT APOLLO DRIVE Sodexo Inc. | Food Service Contractors | 5 | 2018–2025 · 4 | 0.00 | 0.00 |
| SODEXO AT APOLLO DRIVE Sodexo Inc | Food Service Contractors | 5 | 2021–2024 · 3 | 0.00 | 0.00 |
| SODEXO AT BLLC Sodexo Inc | Food Service Contractors | 1 | 2021–2024 · 3 | — | 0.00 |
| SODEXO AT BLLC Sodexo Inc | Food Service Contractors | 2 | 2023 · 1 | 0.00 | 0.00 |
| SODEXO AT BLLC FOOD Sodexo Inc | Food Service Contractors | 1 | 2021–2024 · 3 | 0.00 | 0.00 |
| SODEXO AT BLLC FOOD Sodexo Inc | Food Service Contractors | 12 | 2023 · 1 | 0.00 | 0.00 |
| SODEXO AT BROOKS AUTOMATION ROUTE VEND Sodexo Inc | Building Cleaning and Maintenance | 1 | 2020–2023 · 2 | — | 0.00 |
| SODEXO AT BROOKS AUTOMATION ROUTE VEND. Sodexo Inc | Building Cleaning/Maintenance | 1 | 2022 · 1 | — | 0.00 |
| Sterling Corp - Chelmsford Markow Companies | Furniture moving, used | 116 | 2021–2024 · 2 | 5.43 | 2.05 |
| Sterling Corp - Chelmsford Markow Companies | Furniture moving, used | 117 | 2023–2025 · 2 | 0.85 | 1.84 |
| Summer Place | Assisted-living facilities without on-site nursing care facilities | 25 | 2017–2023 · 4 | 0.00 | 5.44 |
| Summer Place Provincial | Senior living | 30 | 2024 · 1 | 0.00 | 0.00 |
| Summer Place Provincial | Senior living | 31 | 2025 · 1 | 0.00 | 0.00 |
| Sunny Acres Opco LLC Sunny Acres | Skilled nursing facilities | 98 | 2024 · 1 | 39.07 | 4.70 |
| Sunny Acres Opco LLC Sunny Acres | Skilled nursing facilities | 105 | 2025 · 1 | 19.95 | 4.17 |
| SUPER STOP & SHOP #0480 STOP & SHOP | Grocery Stores | 108 | 2016–2025 · 7 | 1.59 | 3.16 |
| SUPER Stop And Shop 0480 Stop And Shop | Grocery Stores | 124 | 2022–2024 · 2 | 7.43 | 3.36 |
| Teledyne FLIR Chelmsford Teledyne FLIR | Engineering design services | 85 | 2021–2024 · 3 | 0.00 | 0.00 |
| Teledyne FLIR Chelmsford Teledyne FLIR | Engineering design services | 85 | 2023 · 1 | 0.00 | 0.00 |
| Teleflex | Inhalators, surgical and medical, manufacturing | 304 | 2024 · 1 | 0.66 | 0.81 |
| Teleflex | Inhalators, surgical and medical, manufacturing | 308 | 2025 · 1 | 0.31 | 0.31 |
| Telelfex Medical | Catheters manufacturing | 171 | 2017–2020 · 4 | 1.92 | 1.04 |
| The Paper Store - 0008 - Chelmsford MA TPS GROUP HOLDINGS | Gift novelty and souvenir retail store | 29 | 2025 · 1 | 5.21 | 0.00 |
| Thermo Fisher Scientific - Chelmsford Thermo Fisher Scientific | Acidity (i.e., pH) measuring equipment, laboratory analysis-type, manufacturing | 142 | 2016–2020 · 5 | 0.00 | 0.17 |
| Thermo Fisher Scientific - Chelmsford Thermo Fisher Scientific | Thermoplastic resins and plastics materials manufacturing | 107 | 2023–2025 · 2 | 0.00 | 0.27 |
| Thermo Fisher Scientific- Chelmsford, MA Thermo Fisher Scientific | Plastics and synthetic resins regenerating, precipitating, and coagulating | 122 | 2022–2024 · 2 | 0.00 | 0.89 |
| TMEA - Chelmsford TEL Manufacturing and Engineering of America, Inc. | Semiconductor devices manufacturing | 62 | 2021–2024 · 3 | 0.00 | 0.12 |
| TMEA - Chelmsford TEL Manufacturing and Engineering of America, Inc. | Semiconductor devices manufacturing | 75 | 2023–2025 · 2 | 0.00 | 0.23 |
| Town of Chelmsford Town of Chelmsfod | General services departments, government | 1,013 | 2024 · 1 | 3.30 | 1.19 |
| Van Pool Transportation NRT Transportation | Special needs passenger transportation services | 1,477 | 2023 · 1 | 5.75 | 2.81 |
| Vantage at Chelmsford Vantage Care | Nursing homes | 118 | 2024 · 1 | 2.18 | 4.70 |
| Vantage at Chelmsford,LLC Vantage Health and Rehab | Nursing homes | 118 | 2023 · 1 | 2.50 | 5.00 |
| VJE MA VJ Electronix, Inc. | Lamps, X-ray, manufacturing | 28 | 2017–2025 · 6 | 0.00 | 0.00 |
| VJE MA VJ Electronix, Inc. | Lamps, X-ray, manufacturing | 26 | 2022–2024 · 2 | 0.00 | 0.00 |
| Waddington North America, Inc Chelmsford Waddington North America, Inc/Newell Brands | Cups, plastics (except foam), manufacturing | 500 | 2016 · 1 | 2.53 | 2.94 |
| Walsh Engineering Services, Inc | Metallurgical testing laboratories or services | 135 | 2024 · 1 | 5.16 | 0.00 |
| Watermark Environmental, Inc. | Environmental consulting services | 22 | 2021–2022 · 2 | 0.00 | 0.00 |
| Watermark Environmental, Inc. | Environmental consulting services | 19 | 2023 · 1 | 0.00 | 0.00 |
| WM 2903 Wal-Mart Stores East, LP | Discount Department Stores | 157 | 2018–2025 · 5 | 3.17 | 4.54 |
| WNA Chelmsford | Pails, plastics, manufacturing | 250 | 2020–2025 · 3 | 0.98 | 1.96 |
| WNA Chelmsford | Pails, plastics, manufacturing | 300 | 2021–2024 · 3 | 0.85 | 2.12 |
| WNA-Chelmsford Novolex | Badges, plastics, manufacturing | 494 | 2018–2019 · 2 | 1.45 | 2.80 |
| ZOLL Medical ZOLL ACT | Electromedical and Electrotherapeutic Apparatus Manufacturing | 1,869 | 2019–2025 · 3 | 0.19 | 0.00 |
| ZOLL Medical | Electromedical equipment manufacturing | 2,055 | 2021–2024 · 2 | 0.21 | 0.00 |
| ZOLL Medical | Analog computers manufacturing | 1,439 | 2022 · 1 | 0.66 | 0.00 |
Alphabetical order — this site ranks no one. TRIR = recordable cases × 200,000 ÷ hours worked, for the latest year the establishment filed. The industry median is that of establishments filing with OSHA in the same 4-digit NAICS industry and year; a median of 0.00 means that at least half of them recorded no case that year. Select a name for the full year-by-year record. How to read this.