Workplace injury records in Mason City, IL
14 establishments in Mason City filed an OSHA Form 300A summary at least once between 2016 and 2025. The largest industries here: Agriculture, Forestry, Fishing and Hunting (3), Construction (3), Transportation and Warehousing (2). 6 had 30 to 200 employees at their latest filing.
| Establishment | Industry | Avg. employees (last filing) | Years filed | TRIR (last filing) | Industry median TRIR |
|---|---|---|---|---|---|
| 164926-MASON CITY PO US Postal Service | Mail and Parcel Delivery | 10 | 2017–2022 · 4 | 9.55 | 9.22 |
| 2505-Mason City, IL (Monsanto Co.) Monsanto Company | Postharvest Crop Activities | 57 | 2018 · 1 | 1.83 | 3.21 |
| 2505-Mason City, IL (Monsanto Co.) Monsanto Company | Postharvest Crop Activities | 64 | 2019 · 1 | 1.61 | 3.26 |
| D6 Mason City Yard | Highway, Street, and Bridge Construction | 7 | 2017–2023 · 7 | 0.00 | 1.55 |
| Darling International | Fats, animal, rendering | 34 | 2016–2025 · 10 | 8.00 | 2.90 |
| Glacier Sands Wind Cordelio Power | Electric power generation, wind | 1 | 2025 · 1 | 0.00 | 0.00 |
| Mason City Sunrise FS | Agricultural chemicals merchant wholesalers | 12 | 2017 · 1 | 23.31 | 1.23 |
| Mason City Area Nursing Home Managed By- Heritage Operations Group | Skilled nursing facilities | 135 | 2016–2024 · 9 | 21.39 | 4.70 |
| Mason City Fire Protection District | Fire departments (e.g., government, volunteer (except private)) | 27 | 2020–2021 · 2 | — | 4.25 |
| Mason City, IL Bayer Illinois Production Co., LLC | Support Activities for Crop Production | 32 | 2017–2021 · 3 | 0.00 | 2.71 |
| MASON CITY_1372087 US Postal Service | Mail and Parcel Delivery | 10 | 2023 · 1 | 10.62 | 7.34 |
| Mason County EMS | Ambulance services, air or ground | 5 | 2025 · 1 | 0.00 | 0.50 |
| Moraine Sands Wind 22141015 M A Mortenson Company | Construction | 64 | 2023 · 1 | 0.00 | 0.52 |
| Moraine Sands Wind Civil 23148004 M A Mortenson Company | Construction | 28 | 2023 · 1 | 0.00 | 0.52 |
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.