Exhaust systems and parts, automotive, truck, and bus, manufacturing · Ohio

OPW Knappaco

Hamilton, OH · ~148 workers · 4 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.4
Avg TCR
5.4
Industry avg
0
Fatalities
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The verdict

OPW Knappaco runs at 8% of its industry's injury rate - far safer than the typical Exhaust systems and parts, automotive, truck, and bus, manufacturing workplace, earning a grade A.

OPW Knappaco: 0.4 TCR = 8% of Exhaust systems and parts, automotive, truck, and bus, manufacturing BLS 5.4 · 4y Form 300A (see methodology below)

OPW Knappaco safety composite

OPW Knappaco scores strongest on total case rate (tcr) (safer than 97% of same-industry peers) and weakest on fatalities (safer than 51%), 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).

B

83/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 0.43 per 100 workers

Safer than 97% of industry peers

DART rate
B 0 per 100 workers

Safer than 89% of industry peers

Fatalities
D 0

Safer than 51% 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%).

TCR Δ

−0.8

2021→2024

OPW Knappaco injury rate improved

OPW Knappaco's TCR fell 0.8 from 0.8 in 2021 to 0.0 in 2024. Peak filing year was 2021 at 0.8 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2021=0.8 · 2022=0.5 · 2023=0.5 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 336390 · Hamilton, OH AT/BELOW-IND · MID

Grade A · TCR 0.4 · 8% of ind

  • DART 0.0 DART
  • RANK #1/91
  • PHOTO NSU Corporation
  • BOOK 4y book
  • INJ 3 inj
  • SIZE ~148 FTE

Nearest TCR peer: NSU Corporation (0.0 TCR gap)

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

OPW Knappaco in the TCR neighbourhood

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

TCR

What this shows OPW Knappaco averages 0.4 TCR (8% of the Exhaust systems and parts, automotive, truck, and bus, manufacturing BLS benchmark).

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

OPW Knappaco TCR series: 2021=0.8 · 2022=0.5 · 2023=0.5 · 2024=0 · BLS 5.4

Where OPW Knappaco falls in its industry

772 Exhaust systems and parts, aut establishments

Safer than 97% of graded establishments in this industry, whose median TCR is 3.2.

More dangerous than peersSafer than peers

Narrower to Ohio alone (the establishments it most directly competes with for workers and contracts): ranked #1 safest of 91 Exhaust systems and parts, aut employers in Ohio.

OPW Knappaco (148 employees, TCR 0.4) among 29 same-industry peers, split at the industry median of 154 employees and a TCR of 3.2 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 02004006008001,000 051015 Average employees Total Case Rate OPW Knappaco
OPW Knappaco (148 employees, TCR 0.4) among 29 same-industry peers, split at the industry median of 154 employees and a TCR of 3.2

OPW Knappaco has fewer employees than the Exhaust systems and parts, automotive, t median and a lower injury rate than the industry's median TCR of 3.2. 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 0.5 0.5 1 0 0
2022 0.5 0.5 1 0 0
2021 0.8 0.0 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

336390 · OH · Hamilton

772 Exhaust systems and parts, automotive, truck, and bus, manufacturing employers nationwide with a credible TCR · 22,650 rated employers in Ohio with headcount on file · 153 employers in Hamilton, OH · 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 NSU Corporation 0.4 TCR
NAICS-TCR Thermal Structures - Midwest Division 0.4 TCR
NAICS-TCR US MI North Riley Campus 0.5 TCR
NAICS-TCR Cummins Emissions Solutions 0.4 TCR
STATE-SIZE AZCO INC. - Iron Units 148 FTE
STATE-SIZE Nickolas M Savko & Sons 148 FTE
STATE-SIZE 055-PL001 148 FTE
STATE-SIZE BASF Corporation 148 FTE
CITY-NEAR Fort Hamilton Hospital 1,011 FTE
CITY-NEAR 3638-F 890 FTE
CITY-NEAR thyssenkrupp Bilstein of America 657 FTE
CITY-NEAR thyssenkrupp Bilstein Main Plant 653 FTE
NAT-TCR Tilson Built Company - Houston 0.4 TCR
NAT-TCR Microchip Technology Inc. Hauppauge 0.4 TCR
NAT-TCR Denver Construction Co. 0.4 TCR
NAT-TCR DSM nutritional products Kingstree 0.4 TCR
NAT-SIZE St Joseph of Harahan, LLC 148 FTE
NAT-SIZE Specialty Concrete - Austin 148 FTE
NAT-SIZE Takako America Co., Inc. 148 FTE
NAT-SIZE Legacy Village of Stillwater 148 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, 2021. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.