Assembly line rebuilding of automotive and truck gasoline engines · Michigan

Mack Engine Plant

Detroit, MI · ~615 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

Mack Engine Plant runs at 35% of its industry's injury rate - far safer than the typical Assembly line rebuilding of automotive and truck gasoline engines workplace, earning a grade A.

Mack Engine Plant: 1.9 TCR = 35% of Assembly line rebuilding of automotive and truck gasoline engines BLS 5.4 · 3y Form 300A (see methodology below)

Mack Engine Plant safety composite

Mack Engine Plant scores strongest on total case rate (tcr) (safer than 72% of same-industry peers) and weakest on dart rate (safer than 40%), 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

55/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 1.87 per 100 workers

Safer than 72% of industry peers

DART rate
D 1.88 per 100 workers

Safer than 40% 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%).

Rising injury rate

Mack Engine Plant: 1.7 → 2.1 TCR

Peak year 2019 @ 2.1 TCR · DART/TCR 1.01× in 2019

Mack Engine Plant's TCR rose 0.5 from 1.7 in 2016 to 2.1 in 2019. In 2019, DART was 1.01× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 336310 · Detroit, MI AT/BELOW-IND · MID

Grade A · TCR 1.9 · 35% of ind

  • DART 1.9 DART
  • RANK #16/55
  • PHOTO MAHLE Engine Compone…
  • BOOK 3y book
  • INJ 30 inj
  • SIZE ~615 FTE

Nearest TCR peer: MAHLE Engine Components USA, Inc. (0.0 TCR gap)

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Mack Engine Plant in the TCR neighbourhood

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

TCR

What this shows Mack Engine Plant averages 1.9 TCR (35% of the Assembly line rebuilding of automotive and truck gasoline engines BLS benchmark).

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

Mack Engine Plant TCR series: 2016=1.7 · 2017=1.8 · 2019=2.1 · BLS 5.4

Where Mack Engine Plant falls in its industry

221 Assembly line rebuilding of au establishments

Safer than 72% of graded establishments in this industry, whose median TCR is 2.9.

More dangerous than peersSafer than peers

Narrower to Michigan alone (the establishments it most directly competes with for workers and contracts): ranked #16 safest of 55 Assembly line rebuilding of au employers in Michigan.

Mack Engine Plant (615 employees, TCR 1.9) among 29 same-industry peers, split at the industry median of 165 employees and a TCR of 2.9 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 02004006008001,000 05101520 Average employees Total Case Rate Mack Engine Plant
Mack Engine Plant (615 employees, TCR 1.9) among 29 same-industry peers, split at the industry median of 165 employees and a TCR of 2.9

Mack Engine Plant has more employees than the Assembly line rebuilding of automotive a median and a lower injury rate than the industry's median TCR of 2.9. 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
2019 2.1 1.9 8 1 0
2017 1.8 1.7 12 5 0
2016 1.7 1.6 10 5 0

OSHA ITA peer cross-reference

Establishment peer ledger

336310 · MI · Detroit

221 Assembly line rebuilding of automotive and truck gasoline engines employers nationwide with a credible TCR · 16,393 rated employers in Michigan with headcount on file · 673 employers in Detroit, MI · 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 MAHLE Engine Components USA, Inc. 1.9 TCR
NAICS-TCR CP-CARRILLO, INC. 1.9 TCR
NAICS-TCR Mercury Marine Plant 36 (Racing) - Taycheedah, WI 1.9 TCR
NAICS-TCR Aisin Automotive Casting Tennessee 1.9 TCR
STATE-SIZE Boar's Head Provisions Co., Inc. 615 FTE
STATE-SIZE Supply Chain : Muskegon, MI 615 FTE
STATE-SIZE Detroit Thermal Systems LLC 614 FTE
STATE-SIZE MidMichigan Medical Center-Gratiot 616 FTE
CITY-NEAR Henry Ford Hospital 8,838 FTE
CITY-NEAR Detroit Campus 8,632 FTE
CITY-NEAR Delta Air Lines - DTW 6,640 FTE
CITY-NEAR General Motors Corporation 5,241 FTE
NAT-TCR Alatrade-Boaz 1.9 TCR
NAT-TCR Sterling Boiler & Mechanical, LLC 1.9 TCR
NAT-TCR Frederick Division 1.9 TCR
NAT-TCR 210 - Forest Park 1.9 TCR
NAT-SIZE KraftHeinz Mason City Iowa 615 FTE
NAT-SIZE COH Police Department 615 FTE
NAT-SIZE Alorica Beaumont Contact Center 615 FTE
NAT-SIZE Supply Chain : Wilmington, NC 615 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: 2019, 2017, 2016. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.