Instrument control panels (i.e., assembling purchased gauges), automotive, truck, and bus, manufacturing · California

Holley Inc. - AEM/Simpson

Hawthrone, CA · ~57 workers · 3 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.9
Avg TCR
5.4
Industry avg
0
Fatalities
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The verdict

Holley Inc. - AEM/Simpson runs at 34% of its industry's injury rate - far safer than the typical Instrument control panels (i.e., assembling purchased gauges), automotive, truck, and bus, manufacturing workplace, earning a grade A.

Holley Inc. - AEM/Simpson: 1.9 TCR = 34% of Instrument control panels (i.e., assembling purchased gauges), automotive, truck, and bus, manufacturing BLS 5.4 · 3y Form 300A (see methodology below)

Holley Inc. - AEM/Simpson safety composite

Holley Inc. - AEM/Simpson scores strongest on dart rate (safer than 84% of same-industry peers) and weakest on fatalities (safer than 50%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

C

63/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 1.85 per 100 workers

Safer than 52% of industry peers

DART rate
B 0 per 100 workers

Safer than 84% of industry peers

Fatalities
D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Holley Inc. - AEM/Simpson held a steady TCR band

Holley Inc. - AEM/Simpson's TCR held near 0.0 from 0.0 in 2022 to 0.0 in 2024. Peak filing year was 2023 at 5.6 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2022=0.0 · 2023=5.6 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 336320 · Hawthrone, CA AT/BELOW-IND · SMALL

Grade A · TCR 1.9 · 34% of ind

  • DART 0.0 DART
  • RANK #4/8
  • PHOTO Holley Inc. - MSD
  • BOOK 3y book
  • INJ 4 inj
  • SIZE ~57 FTE

Nearest TCR peer: Holley Inc. - MSD (0.0 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

Holley Inc. - AEM/Simpson in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Holley Inc. - AEM/Simpson averages 1.9 TCR (34% of the Instrument control panels (i.e., assembling purchased gauges), automotive, truck, and bus, manufacturing BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Holley Inc. - AEM/Simpson TCR series: 2022=0 · 2023=5.6 · 2024=0 · BLS 5.4

Where Holley Inc. - AEM/Simpson falls in its industry

216 Instrument control panels (i.e establishments

Safer than 52% of graded establishments in this industry, whose median TCR is 1.9.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #4 safest of 8 Instrument control panels (i.e employers in California.

Holley Inc. - AEM/Simpson (57 employees, TCR 1.9) among 29 same-industry peers, split at the industry median of 162 employees and a TCR of 1.9 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 05001,0001,500 0246810 Average employees Total Case Rate Holley Inc. - AEM/Simpson
Holley Inc. - AEM/Simpson (57 employees, TCR 1.9) among 29 same-industry peers, split at the industry median of 162 employees and a TCR of 1.9

Holley Inc. - AEM/Simpson has fewer employees than the Instrument control panels (i.e., assembl median and a lower injury rate than the industry's median TCR of 1.9. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2024 0.0 0.0 0 0 0
2023 5.6 5.6 4 0 0
2022 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

336320 · CA · Hawthrone

216 Instrument control panels (i.e., assembling purchased gauges), automotive, truck, and bus, manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Holley Inc. - MSD 1.9 TCR
NAICS-TCR C.E Niehoff & Co. 1.9 TCR
NAICS-TCR Standard Motor Products 1.8 TCR
NAICS-TCR Antaya Technologies, LLC 1.9 TCR
STATE-SIZE Bowles Farming Company 57 FTE
STATE-SIZE Blanc Vineyards, LLC 57 FTE
STATE-SIZE MI RANCHITO FARMING INC 57 FTE
STATE-SIZE Farmland Management Services 57 FTE
CITY-NEAR Culver City 70 FTE
NAT-TCR Front Row Motorsports, Inc. 1.9 TCR
NAT-TCR Eichberg Construction, Inc. 1.9 TCR
NAT-TCR Precision Ladders LLC 1.9 TCR
NAT-TCR Klinger IGI, Inc. 1.9 TCR
NAT-SIZE Ok Concrete Co 57 FTE
NAT-SIZE AC Hotel - Phoenix Downtown 57 FTE
NAT-SIZE ICC Glen Mills LLC 57 FTE
NAT-SIZE Dubuque CMC/VMI 57 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023, 2022. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.