Excavating, earthmoving, or land clearing contractors · Arizona
Knochel Bros Inc
PHOENIX, AZ · ~321 workers · 6 years of OSHA Injury Tracking Application data.
- F
- Failing Safety Record
- 7.1
- Avg TCR
- 2.8
- Industry avg
- 0
- Fatalities
The verdict
Knochel Bros Inc runs at 253% of its industry's injury rate - far more dangerous than the typical Excavating, earthmoving, or land clearing contractors workplace, earning a grade F.
- F
- Failing Safety Record
- 7.1
- avg TCR · per 100 workers
- 2.8
- industry benchmark (BLS)
- 148
- recordable injuries tracked
Grade compares Knochel Bros Inc's OSHA Total Case Rate to the BLS industry benchmark across 6 years of Form 300A filings (2016–2024). This reflects reported recordable injuries, not an independent safety inspection -- underreporting is a known limitation of employer self-recordkeeping.
Injury rate over time
Knochel Bros Inc's yearly Total Case Rate, against the 2.8 industry benchmark.
Total Case Rate (recordable injuries per 100 full-time workers), OSHA ITA Form 300A. Industry benchmark: BLS IIF, NAICS 238910.
Where Knochel Bros Inc falls in its industry
2,119 Excavating, earthmoving, or la establishmentsSafer than 9% of graded establishments in this industry, whose median TCR is 2.0.
Knochel Bros Inc has an average TCR of 7.1, which is 253% of the industry average (2.8) for Excavating, earthmoving, or land clearing contractors. This is significantly worse than average.
Safety Insights for Knochel Bros Inc
Knochel Bros Inc operates an establishment with approximately 321 full-time equivalent workers in PHOENIX, AZ, classified under the Excavating, earthmoving, or land clearing contractors industry (NAICS 238910). Across 6 years of mandatory OSHA Injury Tracking Application (ITA) reporting, this employer has accumulated 148 recordable injuries, 9 occupational illnesses, and 0 workplace fatalities. The average Total Case Rate (TCR) of 7.1 injuries per 100 full-time workers per year provides the anchor metric for the F letter grade (Failing Safety Record).
Benchmarked against the Bureau of Labor Statistics industry average of 2.8 for Excavating, earthmoving, or land clearing contractors, Knochel Bros Inc's workforce experiences 253% of the typical injury burden. This ratio matters because TCR already normalizes for hours worked, a 200,000-hour exposure base equals roughly 100 full-time workers, so establishments with very different headcounts can be compared directly. A TCR above the benchmark flags a higher-than-typical risk profile for jobseekers, insurers, and enforcement agencies to examine.
Multi-year trend analysis is the single most reliable signal here: a one-year spike could reflect a single severe event, whereas sustained elevation across 6 reporting cycles points to systemic hazard exposure. Readers evaluating Knochel Bros Inc as an employer, contractor, investment, or regulatory target should examine the yearly DART rate (days away, restricted, or transferred), the fatality count of 0, and any year-over-year deterioration shown in the table below. All figures come directly from employer-submitted OSHA Form 300A summaries, there is no modeling, estimation, or third-party adjustment layered on top of the government data.
Verify This Employer with OSHA
All injury, illness, and fatality figures on this page are sourced from Knochel Bros Inc's own mandatory OSHA Form 300A summaries. Cross-check the underlying establishment record directly against the federal source, name, NAICS classification, recordable case totals, and inspection history are all searchable on OSHA's Establishment-Specific Injury and Illness Data system.
Verify on OSHA Establishment SearchSource: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 238910 - Excavating, earthmoving, or land clearing contractors.
DART Rate, Transparent Calculation (2023)
DART (Days Away, Restricted, or Transferred) is computed by OSHA as incidents × 200,000 ÷ hours worked. The 200,000-hour denominator equals roughly 100 full-time workers, which lets establishments of very different sizes be compared directly.
37 DART incidents × 200,000 ÷ 918,896 hours worked = 8.05 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Knochel Bros Inc (this establishment) | 7.07 | OSHA ITA Form 300A, 6-year avg |
| Foundation drilling contractors industry avg | 2.80 | BLS IIF, NAICS 238910 |
| Arizona state avg (all industries) | 4.73 | OSHA ITA, state-level rollup |
Industry benchmarks: Bureau of Labor Statistics, Injuries, Illnesses, and Fatalities (IIF) program
Reportable Incident Timeline
Year-by-year reportable incidents (recordable injuries + illnesses + fatalities) submitted by Knochel Bros Inc to OSHA's Injury Tracking Application. Each row anchors to OSHA's inspection records search where you can pull the underlying inspection case numbers and citations for that establishment-year.
- 2023: 56 reportable incidents · 56 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2022: 28 reportable incidents · 26 injuries, 2 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2021: 24 reportable incidents · 21 injuries, 3 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2019: 25 reportable incidents · 22 injuries, 3 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2017: 17 reportable incidents · 17 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2016: 7 reportable incidents · 6 injuries, 1 illnesses, 0 fatalities - OSHA inspection records (case numbers)
Source: OSHA Inspection Information System (IMIS) - inspection case-number records
Year-by-Year Safety Data
| Year | TCR | DART | Injuries | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2023 | 12.2 | 8.1 | 56 | 0 | 0 |
| 2022 | 6.5 | 4.4 | 26 | 2 | 0 |
| 2021 | 6.3 | 3.9 | 21 | 3 | 0 |
| 2019 | 7.2 | 4.9 | 22 | 3 | 0 |
| 2017 | 7.1 | 6.7 | 17 | 0 | 0 |
| 2016 | 3.3 | 2.8 | 6 | 1 | 0 |
What this grade means for you
Use this grade as a relative read on Knochel Bros Inc's reported OSHA injury record versus its Excavating, earthmoving, or land clearing contractors peers, not a verdict on whether any single site is safe today.
- At 253% of the Excavating, earthmoving, or land clearing contractors benchmark, Knochel Bros Inc reports more injuries than typical peers, ask specifically how the employer is reducing them. Know your rights
- Judge this record against the wider Excavating, earthmoving, or land clearing contractors sector, where injury rates vary widely, before comparing it in isolation. See the industry
- Grades reflect 2016–2024 filings; check the latest establishment record straight from OSHA, or look up a different employer. Look up another
Safety grades reflect employers' self-reported OSHA Form 300A filings from 2016 to 2024 and can lag current conditions. A grade is not a guarantee that any specific workplace is safe or unsafe today. See our methodology and disclaimer.
Frequently Asked Questions
What is Knochel Bros Inc's safety grade?
How is the safety grade calculated?
How many injuries has Knochel Bros Inc reported?
Where does PlainSafetyScore get its data?
Explore More Safety Data
Read our methodology - how this data is sourced, computed, and verified.