Workplace injury records in Ontario, CA — page 3 of 4
1,196 establishments in Ontario filed an OSHA Form 300A summary at least once between 2016 and 2025. The largest industries here: Transportation and Warehousing (329), Manufacturing (252), Wholesale Trade (140). 630 had 30 to 200 employees at their latest filing.
1 ("ConOps - WE…) · 2 (Boxout, LLC …) · 3 (Jacobs Field…) · 4 (Ontatio…)
| Establishment | Industry | Avg. employees (last filing) | Years filed | TRIR (last filing) | Industry median TRIR |
|---|---|---|---|---|---|
| Jacobs Field Services North America at New Indy Jacobs Field Services North America | Paper or pulp mill construction | 57 | 2019 · 1 | 0.00 | 0.41 |
| JBK 66041 Ontario Jack B. Kelley, LLC | bulk liquids trucking long distance | 26 | 2016–2017 · 2 | 2.50 | 3.07 |
| JBT AeroTech Corporation Airport Services ONT FAC JBT AeroTech Corporation | Other Support Activities for Air Transportation | 62 | 2019–2023 · 5 | 0.00 | 2.36 |
| JFSNA at New Indy Container Board Jacobs Field Services North America | Paper or pulp mill construction | 57 | 2017–2018 · 2 | 1.66 | 0.87 |
| Jogue Inc | Flavoring pastes, powders, and syrups for soft drink manufacturing | 30 | 2025 · 1 | 4.43 | 2.22 |
| John Bean Technologies Corporation ONT FAC | maintenance | 45 | 2018 · 1 | 3.47 | 3.14 |
| JOMAR TABLE LINENS, INC. | Tablecloths (except paper) made from purchased materials | 53 | 2017–2019 · 3 | 30.33 | 1.77 |
| K& Z CABINET CO INC | Architectural woodwork and fixtures (i.e., custom designed interiors) manufacturing | 55 | 2019 · 1 | 4.79 | 4.06 |
| K.A.R. CONSTRUCTION INC. | Foundation, building, poured concrete, contractors | 156 | 2017–2025 · 9 | 2.52 | 1.60 |
| Kamps Ontario Kamps Pallets | Pallet containers, wood or wood and metal combination, manufacturing | 4 | 2025 · 1 | 0.00 | 3.26 |
| KAWASAKI POWER SPORTS DLO - 10681 (CAOAI) United Parcel Service | General Warehousing and Storage | 31 | 2017–2018 · 2 | 3.75 | 2.77 |
| Kenyon Plastering of Southern CA, Inc. ----Ontario Div. Kenyon Plastering of Southern CA, Inc. | Stucco contractors | 408 | 2017–2025 · 9 | 4.17 | 1.60 |
| KGPCo Ontario KGPCo | Wiring supplies merchant wholesalers | 33 | 2018–2022 · 5 | 0.00 | 0.00 |
| KGPCo Services, LLC dba Circet USA - Ontario | Electrical, electrical wiring, and low voltage electrical work | 173 | 2023–2024 · 2 | 1.22 | 1.23 |
| Kienle Motor Sports, LLC. dba Audi Ontario Kienle Motor Sports, LLC. | Automobile dealers, new only or new and used | 83 | 2019–2023 · 4 | 1.16 | 2.22 |
| Kienle Motor Sports, LLC. dba Porsche Ontario Kienle Motor Sports, LLC. | Automobile dealers, new only or new and used | 59 | 2020–2023 · 3 | 0.00 | 2.22 |
| KIT Ontario DC Ruby Industrial Technologies LLC | Industrial Supplies Merchant | 24 | 2017–2019 · 3 | 0.00 | 0.41 |
| KIT Ontario DC Littlejohn & Co. LLC | Industrial supplies (except disposable plastics, paper) merchant wholesalers | 20 | 2020–2021 · 2 | 0.00 | 0.00 |
| KLS Doors, LLC Chaparral | Fabricate and Distribute various Door Products | 20 | 2020–2025 · 6 | 0.00 | 1.35 |
| KMC Rubber Ontario KMC Acquisition LLC | Balloons, rubber, manufacturing | 40 | 2023–2025 · 3 | 4.08 | 2.26 |
| KPS Alarms, Inc | Low voltage electrical work | 45 | 2017–2022 · 5 | 17.05 | 1.64 |
| KPS Fire Sprinklers, Inc. | Fire Services | 32 | 2017 · 1 | 0.00 | 2.14 |
| KPS Fire Sprinklers, Inc. | Housing, single-family, construction general contractors | 26 | 2019–2024 · 6 | 0.00 | 0.00 |
| Kuehne Nagel Inc. ONT-6609 Kuehne Nagel Inc. | General Warehousing and Storage | 97 | 2017–2025 · 9 | 2.05 | 1.68 |
| Kuehne Nagel Inc. ONT-6609 Kuehne Nagel Inc. | General Warehousing and Storage | 93 | 2024 · 1 | 3.46 | 1.74 |
| KWIM-5750 Ontario-CA KW Industrial Management | Physical distribution consulting services | 66 | 2025 · 1 | 0.00 | 0.00 |
| L & M Services, Inc. | Air-conditioning system (except window) installation | 14 | 2018–2021 · 4 | 0.00 | 1.59 |
| LA Lululemon Athletica | General warehousing and storage | 450 | 2023–2025 · 3 | 1.34 | 1.68 |
| LA Distribution Center Genuine Parts Company | Parts and accessories dealers, automotive | 138 | 2017–2018 · 2 | 11.35 | 4.88 |
| La-Z-Boy Furniture Gallery-249 La-Z-Boy Inc. | Furniture Store | 10 | 2016 · 1 | 0.00 | 1.98 |
| La-Z-Boy West Coast Distribution Center La-Z-Boy Inc. | Furniture Warehousing and Distribution | 24 | 2016–2022 · 7 | 0.00 | 2.47 |
| LADC Restoration Hardware | Private warehousing and storage, general merchandise | 250 | 2021 · 1 | 0.00 | 2.53 |
| Lassonde Pappas Ontario Lassonde Pappas & Company | Beverages, fruit and vegetable juice, manufacturing | 62 | 2018–2025 · 6 | 10.13 | 2.71 |
| LborNow, Inc Ontario LaborNow | Temporary help services | 1 | 2024 · 1 | 0.00 | 0.00 |
| Leggett & Platt | Cushions, carpet and rug, urethane and other foam plastics (except polystrene), manufacturing | 86 | 2019–2023 · 4 | 8.93 | 2.41 |
| Lighting Resources, LLC - California | Materials recovery facilities (MRF) | 19 | 2018–2023 · 3 | 11.27 | 0.00 |
| Linde Ontario Customer Service Linde Inc. | Industrial equipment and machinery repair and maintenance services | 29 | 2022–2024 · 2 | 0.00 | 0.00 |
| LMI, Inc.-Ontario LMI, Inc. | Cutting, engraving, etching, painting or polishing purchased glass | 156 | 2017–2025 · 9 | 1.54 | 2.00 |
| Logistics Plus, Inc., Ontario CA Logistics Plus, Inc. | General warehousing and storage | 22 | 2019 · 1 | 0.00 | 2.71 |
| LOS | Insulators, electrical (except glass, porcelain), manufacturing | 37 | 2017 · 1 | 7.92 | 1.62 |
| LOS The Gund Company | Insulators, electrical (except glass, porcelain), manufacturing | 40 | 2018–2019 · 2 | 7.65 | 1.55 |
| Los Angeles Operational DC Genuine Parts Company | General warehousing and storage | 124 | 2020–2024 · 4 | 13.51 | 1.74 |
| Los Angeles PDC Stellantis | Motor Vehicle Supplies and New Parts Merchant Wholesalers | 120 | 2017–2025 · 9 | 2.71 | 0.00 |
| LPCC - Ontario Rebond Leggett & Platt | Cushions, carpet and rug, urethane and other foam plastics (except polystrene), manufacturing | 86 | 2016–2018 · 3 | 1.62 | 3.02 |
| LQ0170 Ontario Airport Wyndham Hotels & Resorts | Hospitality | 30 | 2018–2020 · 3 | 8.54 | 2.40 |
| Ludvik Electric Co. - California Ludvik Electric Co. | Electrical contractors | 1 | 2018–2020 · 3 | — | 1.58 |
| LYT AUTTUN LLC Sheraton Ontario Airport Hotel | Resort hotels without casinos | 38 | 2017 · 1 | 9.81 | 4.07 |
| Mactac Ontario Mactac | Adhesive tape (except medical) made from purchased materials | 26 | 2022–2025 · 4 | 0.00 | 1.64 |
| Mag Instrument, Inc. | Flashlights manufacturing | 3,648 | 2017–2023 · 6 | — | 1.13 |
| Main Street Fibers Inc. | Custom compounding (i.e., blending and mixing) of purchased plastics resins | 46 | 2017 · 1 | — | 1.73 |
| Manufactor Melmarc Products Inc | Screen printing fabric grey goods and textile products (except apparel) | 297 | 2017 · 1 | 1.72 | 2.85 |
| Manufacturing Interior Solutions, Inc | Millwork, custom architectural, manufacturing | 27 | 2017–2021 · 5 | 21.32 | 3.35 |
| Mariposa Community Counseling UC | — | 1 | 2019 · 1 | — | 0.00 |
| MarLee Manufacturing Inc MarLee Manufacturing, Inc. | Medical Instruments | 30 | 2017 · 1 | — | 0.00 |
| Martinez Steel | Rebar contractors | 333 | 2022–2024 · 2 | 3.17 | 1.96 |
| Martinez Steel LLC | Concrete reinforcement placement | 250 | 2023–2025 · 2 | 1.11 | 1.60 |
| Marwah Corporation 557 Compa Logistics | General Warehousing and Storage | 11 | 2024–2025 · 2 | 0.00 | 1.68 |
| Mathis Brothers - Ontario LBC, Limited Partnership | Furniture stores (e.g., household, office, outdoor) | 361 | 2017 · 1 | 1.90 | 0.00 |
| Maury Microwave | Microwave components manufacturing | 110 | 2021 · 1 | 1.75 | 0.39 |
| McIntyre Metal Decking | Structural steel erecting or iron work contractors | 34 | 2019–2025 · 7 | 0.00 | 1.60 |
| MD Barnmaster Barnmaster Supply LLC | Buildings, prefabricated metal, manufacturing | 28 | 2024 · 1 | 0.00 | 2.88 |
| Melmarc Products Inc | Databases screen printing without publishing | 191 | 2022–2025 · 3 | 2.68 | 1.35 |
| Melvin Wrought Iron Inc - Main Shop Melvin Wrought Iron Inc | Structural steel, fabricated, manufacturing | 20 | 2025 · 1 | 0.00 | 2.71 |
| MERIT TRUCKING COMPANY INC Peoplease | — | 24 | 2017–2022 · 6 | 0.00 | 2.54 |
| Metro Logics-Ontario Metro Logics, Inc. | Bonded warehousing, general merchandise | 27 | 2019–2022 · 4 | 0.00 | 2.47 |
| Metro Ontario CA Metropolitan Warehouse & Delivery | General warehousing and storage | 36 | 2018 · 1 | 8.42 | 2.77 |
| Metro RF Services CA Metro RF Services Inc. | Telecommunications equipment and wiring (except transmission line) installation contractors | 53 | 2023–2024 · 2 | 1.83 | 1.23 |
| Metro RF Services FL Metro RF Services Inc. | Telecommunications equipment and wiring (except transmission line) installation contractors | 4 | 2023 · 1 | 0.00 | 1.38 |
| Metro RF Services Inc. | Internet service providers, using client-supplied telecommunications (e.g., dial-up ISPs) | 58 | 2024–2025 · 2 | 0.00 | — |
| Midwest Truck & Auto Parts, Inc. - CA Midwest Truck & Auto Parts, Inc. | Automobile accessories (except tires, tubes) merchant wholesalers | 3 | 2020–2023 · 3 | 42.02 | 1.01 |
| MikronPMP | Acrylate rubber manufacturing | 41 | 2019–2020 · 2 | 7.55 | 1.01 |
| Milliken | Air-conditioners, motor vehicle, manufacturing | 9 | 2019–2023 · 5 | 13.35 | 2.44 |
| Minsley, Inc | Rice meal manufacturing | 43 | 2023–2024 · 2 | 4.84 | 2.48 |
| Mission Home Health Ontario Mission Healthcare Services LLC | 80808 | 50 | 2024 · 1 | 0.00 | 0.57 |
| Mission Hospice Ontario Mission Healthcare Services LLC | 80808 | 13 | 2024 · 1 | 8.52 | 0.57 |
| Mission Landscape Companies - Ontario Mission Landscape Companies, Inc. | Landscaping services (except planning) | 95 | 2017–2025 · 9 | 7.64 | 0.00 |
| Mondelez Global Pacific Mountain - Sales Mondelez Global LLC | General-line groceries merchant wholesalers | 1,233 | 2019–2025 · 6 | 3.15 | 3.31 |
| Mondelez Global Pacific Mountain - Sales Mondelez Global LLC | General-line groceries merchant wholesalers | 1,541 | 2019 · 1 | 4.97 | 4.56 |
| Mondelez Ontario CA. (SMRU73363) DHL Supply Chain | Motor Freight Transportation And Warehousing | 55 | 2022 · 1 | 13.99 | 2.47 |
| montalvan's sales inc montalvans sales inc | General-line groceries merchant wholesalers | 47 | 2021–2024 · 2 | 4.85 | 3.45 |
| MONTCLAIR AUTOMOTIVE SERVICES INC INFINITI OF ONTARIO | Automobile dealers, new only or new and used | 68 | 2019 · 1 | 4.73 | 3.10 |
| Montefino Ventilator Training | Assisted-living facilities with on-site nursing facilities | 228 | 2023–2025 · 3 | 0.64 | 4.90 |
| Mopar - Los Angeles Caravan Facilities Management | Building cleaning services, janitorial | 6 | 2021 · 1 | 32.03 | 1.78 |
| MPM Products, Inc. - Corporate MPM Products, Inc. | General warehousing and storage | 2 | 2023 · 1 | 0.00 | 1.97 |
| MQA Mobis Parts America, LLC | Automotive parts, new, merchant wholesalers | 46 | 2018–2025 · 8 | 2.42 | 0.00 |
| MRC Mobis Parts America, LLC | Automotive parts, new, merchant wholesalers | 23 | 2018–2025 · 8 | 0.00 | 0.00 |
| MTS ONT Majestic Terminal Services, Inc | Freight forwarding | 420 | 2017 · 1 | 9.17 | 0.00 |
| Multi, Inc. | X-ray machines and parts, medical and dental, merchant wholesalers | 28 | 2018–2019 · 2 | 5.00 | 0.00 |
| Municipal - AS - California Service Center Utility Service Co | Water Tank Rehab and Maintenance | 9 | 2020–2022 · 3 | 0.00 | 2.03 |
| Myers Power Products, Inc. | Electrical power measuring equipment manufacturing | 340 | 2017–2018 · 2 | 1.38 | 0.44 |
| NA-US-CA-Ontario-2837 E Cedar St Tesla | Automotive Service and Repair | 55 | 2024 · 1 | 3.28 | 0.00 |
| NA-US-CA-WCD-Ontario-Guasti Rd- Tesla | General Warehousing and Storage | 29 | 2018–2021 · 2 | 6.29 | 2.53 |
| NA2 ONTARIO TECH TRAINING CENTER BMW (US) HOLDINGS CORP. ONTARIO TECH TRAINING CENTER | Automobile Manufacturing | 20 | 2025 · 1 | 0.00 | 2.73 |
| NAP Gladu California NAP Asset Holdings, LTD | Inserts, cutting tool, manufacturing | 27 | 2016–2018 · 3 | 7.36 | 2.65 |
| NAPA Auto Parts - LA Main Store | Automotive parts and supply stores | 35 | 2021 · 1 | 0.00 | 3.50 |
| National Distribution Centers LLC-1990 Cucamonga Ave National Distribution Centers LLC | Transportation Warehousing Logistics | 39 | 2020–2024 · 4 | 4.87 | 1.74 |
| National Distribution Centers LLC-1991 S.Cucamonga Avenue National Distribution Centers LLC | Transportation Warehousing Logistics | 48 | 2018–2024 · 6 | 2.00 | 1.74 |
| National Distribution Centers LLC-4061 E. Francis St National Distribution Centers LLC | Transportation Warehousing Logistics | 38 | 2020–2024 · 5 | 0.00 | 1.74 |
| National Distribution Centers LLC-4100 E Mission Blvd National Distribution Centers LLC | Transportation Warehousing Logistics | 53 | 2018–2024 · 6 | 0.00 | 1.74 |
| National Distribution Centers LLC-4815 S. HELLMAN AVE National Distribution Centers LLC | Transportation Warehousing Logistics | 137 | 2020–2024 · 4 | 0.00 | 1.74 |
| National Distribution Centers LLC-5140 Santa Ana Street National Distribution Centers LLC | — | 73 | 2018–2023 · 5 | 5.27 | 1.97 |
| National Distribution Centers LLC-5540 E. 4TH ST National Distribution Centers LLC | Transportation Warehousing Logistics | 203 | 2021–2024 · 3 | 2.36 | 1.74 |
| National Distribution Centers, LLC-1450 E. Mission Blvd | — | 53 | 2019 · 1 | 0.00 | 2.71 |
| Neff Construction, Inc. | School building construction | 68 | 2017–2021 · 5 | 0.00 | 0.00 |
| Neff Construction, Inc. | Addition, alteration and renovation for-sale builders, commercial and institutional building | 70 | 2022–2025 · 4 | 1.43 | 0.00 |
| Nellson Nutraceutical | Chocolate covered candy bars made from purchased chocolate | 400 | 2025 · 1 | 1.03 | 2.47 |
| Nestle Waters Ontario Factory Arrowhead Mountain Springs | Beverages, naturally carbonated bottled water, manufacturing | 75 | 2018–2020 · 2 | 1.11 | 3.46 |
| Net Shapes Inc | Foundries, steel investment | 118 | 2018–2023 · 4 | 9.65 | 5.00 |
| New Indy Containerboard Ontario | Leatherboard (i.e., paperboard based) made in paperboard mills | 102 | 2018–2025 · 3 | 0.86 | 1.72 |
| New-Indy Containerboard, Ontario New Indy Containerboard | Paperboard (e.g., can/drum stock, container board, corrugating medium, folding carton stock, linerboard, tube) manufacturing | 100 | 2022 · 1 | 2.07 | 2.02 |
| Newegg Inc - WH16 Newegg Commerce Inc | Consumer electronics merchant wholesalers | 25 | 2022 · 1 | 45.02 | 0.00 |
| NextGen Associates, Inc. ServiceMaster Restoration by EMT | Remediation services | 2 | 2019 · 1 | 0.00 | 1.24 |
| NextGen Associates, Inc. | Janitorial services | 34 | 2021–2023 · 3 | — | 0.00 |
| NFI Management Services LLC-4815 S. HELLMAN AVE NFI Management Services LLC | Transportation Warehousing Logistics | 50 | 2024 · 1 | 0.00 | 0.00 |
| Niagara Bottling, LLC - Concours St. Niagara Bottling, LLC | Beverages, naturally carbonated bottled water, manufacturing | 103 | 2017–2025 · 9 | 0.00 | 2.89 |
| Niagara Bottling, LLC - Corporate Niagara Bottling, LLC | Beverages, naturally carbonated bottled water, manufacturing | 966 | 2017–2018 · 2 | 0.20 | 3.51 |
| Niagara Bottling, LLC - Philly St Niagara Bottling | Beverages, naturally carbonated bottled water, manufacturing | 179 | 2017–2025 · 9 | 0.50 | 2.89 |
| Nike West Coast - ReLAy. (SMRU90071) DHL Supply Chain | Motor Freight Transportation And Warehousing | 385 | 2021–2022 · 2 | 3.00 | 2.47 |
| NIND 15 GEODIS LOGISTICS | COURIERS AND EXPRESS DELIVERY SERVICES | 22 | 2017–2024 · 6 | 0.00 | 7.82 |
| Noble House - Ontario Noble House Home Furnishings | Furniture (except drafting tables, hospital beds, medical furniture) merchant wholesalers | 208 | 2019–2020 · 2 | 3.25 | 0.53 |
| North American Crane Company Cummings Industries Inc. | Cranes, overhead traveling, manufacturing | 30 | 2018–2020 · 3 | 0.00 | 1.72 |
| NRI USA, LLC - LK NRI USA, LLC | General warehousing and storage | 111 | 2021–2025 · 5 | 8.71 | 1.68 |
| O W LEE CO INC | Furniture, outdoor metal household-type (e.g., beach, garden, lawn, porch), manufacturing | 125 | 2017 · 1 | 6.93 | 3.77 |
| ODW - Ontario Etiwanda ODW Logistics Inc. | General warehousing and storage | 29 | 2016 · 1 | 9.84 | 2.82 |
| ODW Logistics - Ontario 2 ODW Logistics Inc. | General warehousing and storage | 36 | 2024–2025 · 2 | 0.00 | 1.68 |
| ODW Logistics - Ontario elf ODW Logistics Inc. | General warehousing and storage | 131 | 2016–2025 · 10 | 2.06 | 1.68 |
| Office Master, Inc. | Office furniture (except wood), padded, upholstered, or plain (except wood), manufacturing | 73 | 2020–2025 · 5 | 2.82 | 2.59 |
| Office Star Products Ontario Office Star Products | Furniture (except drafting tables, hospital beds, medical furniture) merchant wholesalers | 141 | 2017–2018 · 2 | 2.05 | 3.28 |
| Okuma Fishing Tackle Corp | General merchandise, durable goods, merchant wholesalers | 47 | 2018–2023 · 3 | 0.00 | 1.60 |
| ON Fellers LLC | Other Miscellaneous Durable Goods Merchant Wholesalers | 3 | 2017–2022 · 5 | 0.00 | 1.71 |
| OnCal Warehouses Bio-Lab, Inc | General warehousing and storage | 36 | 2018–2019 · 2 | 0.00 | 2.71 |
| ONT DHL Express USA Inc | Express delivery services (except establishments operating under a universal service obligation) | 60 | 2016–2018 · 3 | 3.91 | 8.04 |
| ONT Southwest Airlines | Scheduled Passenger Air Transportation | 194 | 2016–2025 · 10 | 22.96 | 4.55 |
| ONT ASIG | Aviation Support | 28 | 2016 · 1 | 3.11 | 2.44 |
| ONT KEYSTON BROS | General merchandise, durable goods, merchant wholesalers | 13 | 2016–2021 · 6 | 0.00 | 1.85 |
| ONT Air Transport International Inc | Scheduled air passenger transportation | 25 | 2017–2023 · 6 | 0.00 | 3.63 |
| ONT | Local Messengers and Local Delivery | 72 | 2022–2023 · 2 | 11.43 | 9.08 |
| ONT F & E Aircraft Maintenance | Maintenance and repair services, aircraft (except factory conversion, factory overhaul, factory rebuilding) | 7 | 2023–2024 · 2 | — | 2.60 |
| ONT Air Transport International | Air passenger carriers, scheduled | 36 | 2024–2025 · 2 | 3.48 | 4.55 |
| ONT Al Clear LLC | Airport passenger screening security services | 32 | 2024 · 1 | 3.45 | 2.60 |
| ONT ONTARIO INTERNATIONAL AIRPORT S G2 Secure Staff LLC | Airport passenger screening security services | 25 | 2022–2024 · 3 | 0.00 | 2.60 |
| ONT - AGI Ground AGI Group Holdings LP | Other Airport Operations | 49 | 2024–2025 · 2 | 5.64 | 2.37 |
| ONT - Ontario Pilot Freight Services | Transfer (trucking) services, general freight, local | 18 | 2018–2019 · 2 | 5.15 | 3.79 |
| ONT California Airport US Aviation Services Corp. | Airports, civil, operation and maintenance | 35 | 2020–2025 · 6 | 19.61 | 2.37 |
| ONT Ontario HDL RH US LLC | General warehousing and storage | 36 | 2018–2021 · 4 | 11.63 | 2.53 |
| ONT PAR | — | 81 | 2021–2024 · 4 | 0.00 | 2.83 |
| ONT UNITED GROUND EXPRESS-ONT United Ground Express UNITED GROUND EXPRESS-ONT | Other Airport Operations | 85 | 2020–2025 · 6 | 13.36 | 2.37 |
| ONT-1180 Fox Rent A Car Inc. | Car rental | 22 | 2017–2025 · 8 | 0.00 | 3.11 |
| ONT-FFM Menzies Aviation | Airport fuel management | 13 | 2021–2023 · 3 | 0.00 | 2.36 |
| ONT-GH Menzies Aviation | Aircraft ground handling | 35 | 2021–2025 · 4 | 0.00 | 2.37 |
| ONT-ITP Menzies Aviation | Aircraft fuelling | 67 | 2018–2025 · 8 | 0.00 | 2.37 |
| ONT-M Metro Air Service | Postal stations operated on a contract basis | 110 | 2017–2025 · 9 | 10.38 | 6.06 |
| ONT-SGI-IFLY ONTARIO SKYGROUP INVESTMENT LLC | ALL OTHER AMUSEMENT AND RECREATION INDUSTRIES | 16 | 2016–2025 · 9 | 0.00 | 0.00 |
| ONT054 Airport Terminal Services, Inc | Airports, Flying Fields & Services | 58 | 2021–2022 · 2 | 0.00 | 2.71 |
| ONT54 Airport Terminal Services, Inc | Airport baggage handling services | 87 | 2017 · 1 | 14.20 | 2.66 |
| Ontario | — | 6 | 2016–2025 · 5 | 0.00 | 1.68 |
| Ontario | Commercial Printing (except Screen and Books) | 40 | 2016–2017 · 2 | 2.93 | 2.22 |
| Ontario OrePac Holding Company | Building board (e.g., fiber, flake, particle) merchant wholesalers | 103 | 2016–2019 · 4 | 1.87 | 3.72 |
| Ontario CDS | General warehousing and storage | 61 | 2017 · 1 | 4.63 | 2.63 |
| Ontario George Verhoeven Grain, Inc. | Grain elevators merchant wholesalers grain | 21 | 2017 · 1 | 5.16 | 0.00 |
| Ontario MONDELEZ GLOBAL, LLC | General freight trucking, local | 110 | 2017–2025 · 8 | 59.10 | 2.83 |
| Ontario Raymond Handling Solutions | Materials handling equipment repair and maintenance services | 148 | 2017–2019 · 3 | 3.90 | 1.47 |
| Ontario Unity Courier Service | Local letter and parcel delivery services as part of intercity courier network | 80 | 2017–2018 · 2 | 4.96 | 8.04 |
| Ontario Accelerate360 Distribution LLC | Books merchant wholesalers | 37 | 2017–2024 · 8 | 5.16 | 0.00 |
| ONTARIO PENSKE TRUCK LEASING 020110 | Truck tractor rental or leasing | 71 | 2017–2025 · 8 | 0.00 | 3.11 |
| Ontario Aegis Treatment Centers, LLC | Substance abuse treatment centers and clinics (except hospitals), outpatient | 29 | 2017–2020 · 4 | 8.75 | 0.00 |
| Ontario The Kelleher Corporation | Lumber (e.g., dressed, finished, rough) merchant wholesalers | 56 | 2017–2018 · 2 | 2.51 | 4.35 |
| Ontario Clutter Inc | General warehousing and storage | 2 | 2017 · 1 | — | 2.63 |
| Ontario Ajinomoto Foods North America | Specialty Frozen Foods | 379 | 2017–2025 · 9 | 0.00 | 2.71 |
| Ontario LANDSCAPE DESIGN, INC | Landscape installation services | 21 | 2018 · 1 | 0.00 | 2.64 |
| Ontario Jensen Precast | Pipe, concrete, manufacturing | 17 | 2018–2021 · 4 | 0.00 | 2.94 |
| Ontario Transparent Container Co., Inc. | Packaging, plastics (e.g., blister, bubble), manufacturing | 37 | 2018 · 1 | 0.00 | 3.02 |
| Ontario Pentel of America | Stationery supplies merchant wholesalers | 102 | 2018–2024 · 7 | 7.10 | 1.04 |
| Ontario Guardian Angel Home Care | Home health agencies | 6 | 2018 · 1 | 0.00 | 2.81 |
| Ontario Kapstone Paper and Packaging | Boxes, corrugated and solid fiber, made from purchased paper or paperboard | 49 | 2018 · 1 | 6.02 | 2.26 |
| Ontario Bob's Discount Furniture | Bed stores, retail | 21 | 2019–2025 · 7 | 0.00 | 0.00 |
| Ontario Triage Partners | Telecommunications equipment and wiring (except transmission line) installation contractors | 22 | 2019 · 1 | 0.00 | 1.97 |
| Ontario Unity Courier Services | Courier services (i.e., intercity network) (except establishments operating under a universal service obligation) | 74 | 2019 · 1 | 2.60 | 7.93 |
| Ontario Bay Standard MFG Inc | Fasteners (e.g., bolts, nuts, rivets, screws) merchant wholesalers | 20 | 2020–2022 · 2 | 0.00 | 1.06 |
| ONTARIO Wilbur Ellis | Farm Supplies Merchant Wholesalers | 15 | 2020 · 1 | 0.00 | 0.81 |
| Ontario Unity Courier Services | Courier services (i.e., intercity network) (except establishments operating under a universal service obligation) | 74 | 2020 · 1 | 2.60 | 7.99 |
| Ontario Titan Solar Power CA Inc | Installation of photovoltaic panels | 56 | 2021–2023 · 3 | — | 1.38 |
| Ontario Letter Ride, LLC | Courier services (i.e., intercity network) (except establishments operating under a universal service obligation) | 50 | 2021–2025 · 5 | 9.62 | 7.17 |
| Ontario Kelly Spicers Inc. | Paper (e.g., fine, printing, writing), bulk, merchant wholesalers | 25 | 2022 · 1 | 0.00 | 1.25 |
| Ontario Metropolitan Warehouse Delivery | Furniture delivery | 22 | 2022–2024 · 3 | 0.00 | 2.83 |
| ONTARIO PEP BOYS | — | 11 | 2022 · 1 | 0.00 | 0.00 |
| Ontario Brady Companies LLC | Janitorial supplies wholesaler and distributor | 12 | 2023 · 1 | 0.00 | 0.00 |
| ONTARIO GoEngineer LLC | Technology | 7 | 2023–2025 · 3 | 0.00 | 0.00 |
| ONTARIO General Logistics Systems US, Inc. | OTHER | 86 | 2024–2025 · 2 | 10.90 | 7.17 |
| Ontario Socal Drive-Ins | Fast-food restaurants | 25 | 2024 · 1 | 75.00 | 0.00 |
| Ontario 3971 East Airport Drive DHL Supply Chain | Motor Freight Transportation And Warehousing | 84 | 2023–2025 · 2 | 4.56 | 1.68 |
| Ontario 5141 Santa Ana Street DHL Supply Chain | Motor Freight Transportation And Warehousing | 49 | 2017–2025 · 4 | 9.75 | 1.68 |
| Ontario 5151 E Philadelphia St DHL Supply Chain | Motor Freight Transportation And Warehousing | 89 | 2017–2025 · 7 | 1.08 | 1.68 |
| Ontario 5331 South Carpenter Ave DHL Supply Chain | Motor Freight Transportation And Warehousing | 136 | 2023–2025 · 3 | 2.82 | 1.68 |
| Ontario 5351 East Jurupa Street DHL Supply Chain | Motor Freight Transportation And Warehousing | 44 | 2025 · 1 | 2.19 | 1.68 |
| Ontario #986 Linde Inc | Hydrogen manufacturing | 43 | 2017–2020 · 4 | 0.00 | 0.47 |
| Ontario (5351 Jurupa Street) DHL Supply Chain | Motor Freight Transportation And Warehousing | 54 | 2017–2018 · 2 | 1.86 | 2.77 |
| Ontario (BAMG) Bridgestone Americas | General Warehousing and Storage | 70 | 2016–2025 · 10 | 0.00 | 1.68 |
| ONTARIO (CAARC) United Parcel Service | General Freight Trucking Local | 43 | 2016–2017 · 2 | — | 4.05 |
| Ontario (Cal) A&C Business Enterprises | General warehousing and storage | 25 | 2023 · 1 | 0.00 | 1.97 |
| Ontario - 3971 East Airport Drive DHL Supply Chain | Motor Freight Transportation And Warehousing | 100 | 2023–2024 · 2 | 2.87 | 1.74 |
| Ontario - 5151 E Philadelphia St DHL Supply Chain | Motor Freight Transportation And Warehousing | 111 | 2023–2024 · 2 | 0.87 | 1.74 |
| Ontario - 5331 South Carpenter Ave DHL Supply Chain | Motor Freight Transportation And Warehousing | 312 | 2023 · 1 | 2.15 | 1.97 |
| Ontario - 5351 East Jurupa Street DHL Supply Chain | Motor Freight Transportation And Warehousing | 46 | 2022–2024 · 3 | 2.07 | 1.74 |
| Ontario - 5351 East Jurupa Street DHL Supply Chain | Motor Freight Transportation And Warehousing | 42 | 2023 · 1 | 2.28 | 1.97 |
| Ontario - Mazda | Transportation | 31 | 2016–2018 · 3 | 2.48 | 4.21 |
| Ontario -Frozen Food Express Industries, Inc. / FFE Transportation | General Freight Trucking, Long-Distance, Less Than Truckload | 78 | 2021–2025 · 5 | 0.00 | 2.83 |
| Ontario 2015 TTG IMAGING SOLUTIONS LLC | 541990 All Other Professional, Scientific, and Technical Services | 14 | 2024–2025 · 2 | 0.00 | 1.50 |
| Ontario Airport Enterprise Holdings Inc. | Automobile rental | 107 | 2017–2018 · 2 | 10.07 | 3.45 |
| Ontario Alaska Alaska Airlines | Scheduled air passenger transportation | 42 | 2023–2025 · 3 | 9.04 | 4.55 |
| Ontario Br Ofc - Bld: 1135 - 15 SOUTHERN CALIFORNIA GAS COMPANY | Natural Gas Distribution Srv. | 7 | 2017–2025 · 9 | 0.00 | 0.00 |
| Ontario Branch Triangle Fastener Corporation | Fasteners (e.g., bolts, nuts, rivets, screws) merchant wholesalers | 24 | 2025 · 1 | 0.00 | 0.00 |
| Ontario CA Subaru of America, Inc. | Automobile merchant wholesalers | 2 | 2017 · 1 | 0.00 | 3.05 |
| Ontario CA Americold | Cold storage warehousing | 86 | 2017 · 1 | 1.04 | 2.63 |
| Ontario CA Diebold Nixdorf, Inc. | — | 66 | 2017 · 1 | 8.57 | 2.40 |
| Ontario CA Americold | Cold storage warehousing | 112 | 2019–2021 · 3 | 2.66 | 2.53 |
| Ontario CA LGCY Power | Power generation, solar electric | 72 | 2023–2025 · 3 | 21.77 | 0.00 |
| Ontario CA - 1600 S Milliken Ave JB Hunt | — | 51 | 2021–2025 · 5 | 0.00 | 2.83 |
| Ontario CA - 1950 Sterling Avenue JB Hunt | — | 6 | 2018–2025 · 6 | 15.06 | 2.83 |
| ONTARIO CA - 285 325 UniFirst Corporation | Industrial Launderers | 174 | 2021–2024 · 4 | 6.58 | 2.26 |
| Ontario CA - 851 Vintage Ave J.B. Hunt Transport | — | 6 | 2021–2022 · 2 | 0.00 | 2.54 |
| ONTARIO CA 500 Kaman Corp | Industrial Supplies Merchant | 28 | 2016 · 1 | 0.00 | 0.00 |
| Ontario CA Halyard 417 Neovia Distribution Services | General Warehousing and Storage | 11 | 2021–2024 · 4 | 8.35 | 1.74 |
| Ontario CA JLR 119 Neovia Logistics Services | General Warehousing and Storage | 35 | 2017–2024 · 8 | 0.00 | 1.74 |
| Ontario CA Mazda 118 Neovia Logistics Services | General Warehousing and Storage | 75 | 2017–2024 · 8 | 1.39 | 1.74 |
| Ontario CA Multiclient 120 Neovia Logistics Services | General Warehousing and Storage | 8 | 2017–2024 · 8 | 0.00 | 1.74 |
| Ontario CA Office Intelligrated System LLC | Belt conveyor systems manufacturing | 46 | 2016–2017 · 2 | 0.00 | 2.55 |
| Ontario California Training Center Nissan | Professional and Management Development Training | 5 | 2017–2019 · 3 | 0.00 | 0.00 |
| Ontario Campus Smith Chason College Inc | Medical | 46 | 2025 · 1 | 0.00 | 0.00 |
| ONTARIO CARRIER SUPPORT (CAOCS) United Parcel Service | Courier Services Except by Air | 1,811 | 2016–2018 · 3 | 4.64 | 8.04 |
| Ontario Collision Center Velocity Vehicle Group | Truck trailer paint and body repair | 22 | 2020 · 1 | 0.00 | 0.00 |
| Ontario Container International Paper Company | Boxes, corrugated and solid fiber, made from purchased paper or paperboard | 130 | 2017–2025 · 9 | 1.42 | 1.64 |
| Ontario Convention Center Projection Video Services Inc | Agricultural machinery and equipment rental or leasing | 33 | 2023–2024 · 2 | 13.11 | 0.00 |
| ontario convention center | Convention and visitors bureaus | 123 | 2025 · 1 | 7.43 | 0.00 |
| Ontario Day Program OPARC | Day care centers for disabled persons, the elderly, and persons diagnosed with intellectual and developmental disabilities | 21 | 2025 · 1 | 4.58 | 0.01 |
| ONTARIO DC & HDC RESTORATION HARDWARE INC | General Warehousing and Storage | 76 | 2021–2023 · 3 | 1.41 | 1.97 |
| Ontario Distribution Center B Braun Medical Inc. | Distribution Center | 77 | 2017 · 1 | 10.09 | 2.63 |
| Ontario Distribution Center KeHE Distributors | General Line Grocery Wholesalers | 216 | 2023–2025 · 3 | 5.04 | 3.31 |
| Ontario Division FIRST UNITED DOOR TECHNOLOGIES LLC | 236210 Industrial Building Construction | 4 | 2024 · 1 | 0.00 | 0.00 |
| Ontario Francis Saddle Creek Corporation | General warehousing and storage | 48 | 2016–2022 · 5 | 2.10 | 2.47 |
| Ontario FS (SSS,SAT) Stanley Black and Decker Inc. | Framing contractors | 29 | 2016–2019 · 4 | 3.30 | 3.10 |
| Ontario Grove Healthcare and Wellness Centre LP | Skilled Nursing Facility | 101 | 2017–2024 · 7 | 5.58 | 4.70 |
| Ontario HDL Restoration Hardware | Home Furnishings Retailer | 43 | 2017 · 1 | 5.10 | 5.26 |
| Ontario Health Center | — | 5 | 2019–2025 · 6 | 0.00 | 0.50 |
| Ontario Healthcare Center | Skilled nursing facilities | 85 | 2017–2022 · 5 | — | 6.30 |
| Ontario Healthcare Center Reliant Pro Rehab | healthcare facility | 9 | 2019 · 1 | 0.00 | 0.00 |
| Ontario Hub Grand Home Holdings Inc., dba Barbeques Gal | — | 25 | 2017–2021 · 4 | — | 2.77 |
| ONTARIO HUB (CAONA) United Parcel Service | Courier Services Except by Air | 3,589 | 2016–2018 · 3 | 7.99 | 8.04 |
| Ontario International Airport Los Angeles World Airports | Airports, civil, operation and maintenance | 48 | 2017–2018 · 2 | 24.54 | 3.14 |
| Ontario International Airport Authority | Airport operators (e.g., civil, international, national) | 76 | 2019–2022 · 4 | 0.00 | 2.71 |
| Ontario Mill New-Indy cb | Pulp and paperboard combined manufacturing | 104 | 2016 · 1 | 1.93 | 1.77 |
| Ontario Mills Simon | Shopping center (i.e., not operating contained businesses) rental or leasing | 20 | 2016–2025 · 7 | 6.03 | 0.00 |
| Ontario Mills Simon Property Group | Mall property operation (i.e., not operating contained businesses) rental or leasing | 19 | 2018–2024 · 3 | 0.00 | 0.00 |
| Ontario Mills Parkway Grocery Outlet C & L Coggiola | Grocery stores | 24 | 2020–2023 · 3 | 0.00 | 3.56 |
| Ontario Mountain Village Stadium 14 Regal | Cinemas | 38 | 2017 · 1 | 0.00 | 0.00 |
| Ontario Office NextGen Associates, Inc. | Fire and flood restoration, single-family housing, general contractors | 45 | 2017 · 1 | 7.92 | 0.00 |
| Ontario Outlet Restoration Hardware | Home Furnishings Retailer | 28 | 2017 · 1 | 39.02 | 5.26 |
| Ontario Palace Stadium 22 IMAX & RPX Regal | Cinemas | 79 | 2017 · 1 | 0.00 | 0.00 |
| Ontario PDC Mobis Parts America, LLC | Automotive parts, new, merchant wholesalers | 79 | 2018–2025 · 8 | 4.66 | 0.00 |
| ONTARIO PEC Rolling Frito Lay Sales | Confectionery Merchant Wholesalers | 174 | 2018–2025 · 6 | 2.02 | 3.31 |
| Ontario Phil Saddle Creek Corporation | General warehousing and storage | 69 | 2016–2021 · 4 | 7.26 | 2.53 |
| Ontario Philly Saddle Creek Corporation | General warehousing and storage | 89 | 2022 · 1 | 0.00 | 2.47 |
| ONTARIO PLANT WHITING DOOR MANUFACTURING CORP | Travel trailers, recreational, manufacturing | 78 | 2016–2025 · 10 | 4.87 | 4.42 |
| Ontario Plant Nusku Partners LLC | Siding, dressed lumber, manufacturing | 28 | 2017 · 1 | 3.57 | 4.42 |
| Ontario Refrigeration Ontario Refrigeration Service, Inc | Pumping system, water, installation | 300 | 2017–2024 · 2 | 1.82 | 1.23 |
| Ontario Retail Store LA Police Gear | Bridal gown shops (except custom) | 15 | 2021–2025 · 4 | 0.00 | 0.00 |
| Ontario Service Centre DHL Express | Express Delivery Services except establishments operating under a universal service obligation | 65 | 2025 · 1 | 2.28 | 7.17 |
| Ontario SpringHill Suites Tharaldson Hospitality Management | — | 21 | 2023 · 1 | 0.00 | 2.40 |
| Ontario T Inc John Elway's Crown Toyota | Automobile dealers, new only or new and used | 257 | 2016–2022 · 6 | 5.43 | 2.50 |
| Ontario Terminal Northern Refrigerated Transportation | Trucking, specialized freight (except used goods), local | 121 | 2017–2025 · 6 | 4.07 | 1.84 |
| Ontario Volkswagen | Motor vehicle parts and accessories, new, merchant wholesalers | 55 | 2024 · 1 | 0.00 | 2.30 |
| Ontario Warehouse Lulus Fashion Lounge, LLC | Internet retail sales sites | 97 | 2021–2023 · 3 | 2.57 | 0.00 |
| ONTARIO WAREHOUSE Northern Refrigerated Transportation | Trucking, specialized freight (except used goods), local | 20 | 2023–2025 · 3 | 0.00 | 1.84 |
| Ontario Warehouse National Oak Distributors | Auto body shop supplies, merchant wholesalers | 40 | 2023–2024 · 2 | 5.49 | 2.30 |
| Ontario Warehouse Lulu's Fashion Lounge | Apparel Stores, Womens and Girls Clothing | 95 | 2024–2025 · 2 | 4.37 | 0.00 |
| Ontario Wings, LLC | Full service restaurants | 52 | 2017 · 1 | 0.00 | 2.87 |
| Ontario WRDC Acuity Brands US | Warehouse Distribution Center | 187 | 2024 · 1 | 8.09 | 1.74 |
| Ontario, CA | Business to Consumer retail sales Internet sites | 88 | 2016 · 1 | 8.91 | 0.60 |
| Ontario, CA Diebold Nixdorf, Inc. | — | 66 | 2016–2017 · 2 | 8.57 | 2.40 |
| Ontario, CA (Samsung) 170 Neovia Distribution Services | General Warehousing and Storage | 143 | 2017–2023 · 7 | 2.99 | 1.97 |
| Ontario, CA - 1595 S Dupont Ave J.B. Hunt Transport | — | 18 | 2022 · 1 | 0.00 | 2.54 |
| Ontario, CA - 2202 Milliken Ave J.B. Hunt Transport | — | 19 | 2018 · 1 | 4.62 | 1.11 |
| ONTARIO, CA - 325 UNIFIRST CORPORATION | Industrial Launderers | 143 | 2021–2023 · 3 | 4.84 | 2.24 |
| Ontario, CA - 3551 E. Francis Street J.B. Hunt Transport | — | 1 | 2018–2022 · 3 | 0.00 | 2.54 |
| Ontario, CA - 3971 Airport Drive J.B. Hunt Transport | — | 4 | 2018 · 1 | 0.00 | 1.11 |
| Ontario, CA - 80084 Adapt Health LLC | 5047 | 1 | 2025 · 1 | — | 0.00 |
| Ontario, CA - E Jurupa J.B. Hunt Transport | — | 6 | 2018 · 1 | 0.00 | 1.11 |
| Ontario, CA - Malaga Place J.B. Hunt Transport | — | 13 | 2018–2022 · 4 | 0.00 | 2.54 |
| Ontario, CA - Renal Distr. Baxter Healthcare | General warehousing and storage | 46 | 2016–2021 · 6 | 2.20 | 2.53 |
| Ontario, CA - Vintage Ave JB Hunt | — | 2 | 2018–2024 · 5 | 0.00 | 2.83 |
| Ontario, CA - Wineville J.B. Hunt Transport | — | — | 2018–2022 · 3 | — | 2.54 |
| Ontario, CA RSC Anvil International | Warehousing and storage, general merchandise | 15 | 2016–2020 · 2 | 6.35 | 2.57 |
| Ontario, CA Warehouse Bright Planet Solar Inc. | Installation of photovoltaic panels | 74 | 2021–2023 · 3 | 8.67 | 1.38 |
| Ontario, CA. site NESCO Rentals, LLC. | Construction machinery and equipment rental or leasing without operator | 5 | 2016–2018 · 2 | 0.00 | 0.00 |
| Ontario, United Refrigeration (#D0) United Refrigeration, Inc. | Refrigeration equipment and supplies, commercial-type, merchant wholesalers | 40 | 2017–2025 · 9 | 4.81 | 0.00 |
| ONTARIO-3MUS-CA 3M PI 3M Company | — | 1 | 2025 · 1 | 0.00 | 0.31 |
| Ontario-4652 E Brickell St Ferguson Enterprises, LLC | — | 20 | 2025 · 1 | 0.00 | 0.00 |
| Ontario-Main Kellogg Garden | Fertilizer (Mixing Only) Manufacturing | 44 | 2017–2025 · 7 | 3.08 | 1.08 |
| Ontario; ONT Airport; FAC Oshkosh AeroTech | Airport | 67 | 2024–2025 · 2 | 1.43 | 2.37 |
| ONTARIO_1376170 | Mail and Parcel Delivery | 155 | 2023–2025 · 3 | 11.83 | 6.06 |
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.