Workplace injury records in Diamond Bar, CA
50 establishments in Diamond Bar filed an OSHA Form 300A summary at least once between 2016 and 2025. The largest industries here: Retail Trade (13), Health Care and Social Assistance (11), Administrative and Support and Waste Management and Remediation Services (7). 22 had 30 to 200 employees at their latest filing.
| Establishment | Industry | Avg. employees (last filing) | Years filed | TRIR (last filing) | Industry median TRIR |
|---|---|---|---|---|---|
| #2021 | Gasoline stations with convenience stores | 27 | 2023 · 1 | 0.00 | 12.55 |
| #2041 | Gasoline stations with convenience stores | 37 | 2023 · 1 | 52.58 | 12.55 |
| 056168-POMONA PO USPS | Mail and Parcel Delivery | 126 | 2020 · 1 | 11.41 | 7.73 |
| 056169-POM-DIAMOND BAR BR US Postal Service | Mail and Parcel Delivery | 57 | 2017–2022 · 6 | 4.07 | 9.22 |
| 0775 Leslies Poolmart Inc | All Other Miscellaneous Retailers | 3 | 2025 · 1 | 0.00 | 0.00 |
| 102305.3 - KAISER LA JOSE MARTINEZ_C_6406770_8359_00690_BWE007_37648076.ESS-KAISER - DIAMOND BAR MOB ABM Industries Incorporated | Service to Buildings and Dwellings | 1 | 2025 · 1 | 158.79 | 0.00 |
| 1115 MAJCO LLC | Tire Dealers | 8 | 2023–2025 · 3 | 28.14 | 2.67 |
| 112543.1 - GATEWAY CORPORATE CENTER_C_11361059_5580_00175_BEW002_16520302.FME-GATEWAY CORPORATE CENT ABM Industries Incorporated | Service to Buildings and Dwellings | 1 | 2025 · 1 | 0.00 | 0.00 |
| 118443.1 - 21668 GATEWAY CO UNIRE REG_C_12684245_5561_00451_BNI000_32328086.JAN-21688 GATEWAY CENTE ABM Industries Incorporated | Service to Buildings and Dwellings | 1 | 2025 · 1 | 0.00 | 0.00 |
| 120564.1 - BIRTCHER ANDERSON - 5561 - 21015 PATHFINDER RD.JAN - 21015-21073 PATHFINDER - DAY PRTR ABM Industries Incorporated | Service to Buildings and Dwellings | 1 | 2025 · 1 | 0.00 | 0.00 |
| 2050-942 Golden State Water Company | Grocery | 105 | 2018 · 1 | 13.94 | 4.06 |
| 20500002-942 STORE 942 - DIAMOND BAR Smart & Final STORE 942 - DIAMOND BAR | Supermarkets and Other Grocery Retailers (except Convenience Retailers) | 48 | 2017–2025 · 9 | 0.00 | 3.16 |
| 2179 - Diamond Bar Target | Discount Department Stores | 225 | 2019–2025 · 5 | 1.80 | 2.13 |
| 2179 - Diamond Bar Target | — | 223 | 2023 · 1 | 0.00 | 2.92 |
| 458 - Diamond Bar Social Vocational Services Inc. | Day care centers for disabled persons, the elderly, and persons diagnosed with intellectual and developmental disabilities | 128 | 2017–2023 · 7 | 4.26 | 0.00 |
| 483030 006200_MEADCLIFF_IDD WAIVER GH Sevita 006200_MEADCLIFF_IDD WAIVER GH | Residential Intellectual and Developmental Disability Facilities | 29 | 2019–2025 · 6 | 0.00 | 0.00 |
| 6365-942 Smart and Final Stores LLC | — | 37 | 2016 · 1 | — | 3.91 |
| 77142729 - 1440 BRIDGEGATE DRIVE NIAGARA ABM Industries Incorporated | Service to Buildings and Dwellings | 1 | 2025 · 1 | 0.00 | 0.00 |
| 7746- MAR PIZZA INC. MAR PIZZA INC. | Restaurants, carryout | 47 | 2018 · 1 | 0.00 | 3.03 |
| 80 DSI Security Services - Southern California Dothan Security Inc | Security guard services | 166 | 2025 · 1 | 0.72 | 0.00 |
| ABS-0029-0028-03554 FAC-03554-DIAMOND BAR-CA Albertsons LLC | Supermarkets and Other Grocery (except Convenience) Stores | 63 | 2017–2025 · 9 | 3.94 | 3.16 |
| APR Consulting Inc. | Temporary staffing services | 38 | 2018–2025 · 4 | 0.00 | 0.00 |
| Bridge Gate Dr CA Brand New Day | Medical doctors' (MDs, except mental health) offices (e.g., centers, clinics) | 310 | 2022 · 1 | 0.00 | 0.00 |
| Bronze Knoll Independent Options, Inc. | Group homes for the disabled with nursing care | 8 | 2017 · 1 | 0.00 | 5.78 |
| CA.DIAMO.2 - Ricoh Americas Holdings, Inc. Ricoh USA Inc | Office Equipment | 1 | 2016–2022 · 6 | 0.00 | 0.00 |
| California Department of Transportation Facility 1 Facility 1 | Repair highway road street bridge or airport runway | 2,598 | 2023–2024 · 2 | 0.00 | 1.26 |
| CDSD DIAMOND BAR QUAKER SALES AND DISTRIBUTION, INC. | Other Grocery and Related Products Merchant Wholesalers | 31 | 2016–2018 · 3 | 12.38 | 5.39 |
| Coast Cabinet Installations | Cabinetry work performed at the construction site | 55 | 2017–2020 · 4 | 9.32 | 2.16 |
| DIAMOND BAR Fitness International LLC | Athletic club facilities_physical fitness | 53 | 2018 · 1 | 9.30 | 0.00 |
| Diamond Bar Branch Royal Business Bank | Banks, commercial | 5 | 2023–2025 · 3 | 0.00 | 0.00 |
| Diamond Bar, CA Graybar Electric Company, Inc. | — | 134 | 2016–2019 · 4 | 0.00 | 0.00 |
| DIAMOND BAR_1440491 | Mail and Parcel Delivery | 52 | 2023–2025 · 3 | 6.84 | 6.06 |
| EMERALD POINTE ESSEX PROPERTY TRUST INC | Real Estate Investment Trusts | 3 | 2018–2020 · 3 | 0.00 | 0.00 |
| H Mart West Inc. / H Mart Diamond Bar | Grocery stores | 91 | 2023–2024 · 2 | 2.25 | 3.36 |
| Holiday Inn Diamond Bar Oak Creek LP | Hotels (except casino hotels) | 50 | 2019–2025 · 7 | 9.27 | 2.90 |
| Julian House Independent Options, Inc. | Group homes for the disabled with nursing care | 8 | 2017 · 1 | 0.00 | 5.78 |
| Kiowa Crest I Independent Options, Inc. | Group homes for the disabled with nursing care | 8 | 2017 · 1 | 13.26 | 5.78 |
| Kiowa Crest II Independent Options, Inc. | Group homes for the disabled with nursing care | 8 | 2017 · 1 | 0.00 | 5.78 |
| MORENO MOTORSPORTS LLC | Automotive air-conditioning repair shops | 16 | 2020 · 1 | 0.00 | 0.00 |
| Niagara Bottling, LLC - Corporate Niagara Bottling, LLC | Beverages, naturally carbonated bottled water, manufacturing | 1,948 | 2019–2025 · 7 | 0.25 | 2.89 |
| Ono-CORP Ono Management LLC DBA Ono Hawaiian BBQ | Fast-food restaurants | 122 | 2023–2024 · 2 | 1.58 | 0.00 |
| Palomino House Independent Options, Inc. | Group homes for the disabled with nursing care | 8 | 2017 · 1 | 0.00 | 5.78 |
| People's Care - 01ATSM - Autism Services Redwood Family Care Network | Residential Intellectual and Developmental Disability Facilities | 1 | 2022 · 1 | 0.00 | 0.73 |
| People's Care - 01PCBH - Person Centered Behavioral Health Redwood Family Care Network | Residential Intellectual and Developmental Disability Facilities | 15 | 2022–2023 · 2 | 0.00 | 0.00 |
| Ross store 1991 Ross Stores Inc | Retail Store | 35 | 2018–2020 · 3 | 0.00 | 1.82 |
| SEMA Diamond Bar Specialty Equipment Market Association | Agricultural organizations (except youth farming organizations, farm granges) | 160 | 2018–2019 · 2 | 1.80 | 1.80 |
| Silver Spray Independent Options, Inc. | Group homes for the disabled with nursing care | 8 | 2017 · 1 | 29.84 | 5.78 |
| South Coast Air Quality Management District | — | 882 | 2017–2025 · 9 | 1.13 | 0.00 |
| Store 775 Leslie's Poolmart Inc. | Miscellaneous Retail Stores - NEC | 4 | 2016–2017 · 2 | 0.00 | 0.00 |
| WM 4762 Walmart Inc. | Supermarkets and Other Grocery (except Convenience) Stores | 94 | 2016–2025 · 9 | 4.11 | 3.16 |
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.