Automotive Assembly · Michigan
Detroit Assembly Complex Mack
Detroit, MI · ~3,669 workers · 5 years of OSHA Injury Tracking Application data.
- A
- Excellent Safety Record
- 1.4
- Avg TCR
- 3.3
- Industry avg
- 0
- Fatalities
The verdict
Detroit Assembly Complex Mack runs at 42% of its industry's injury rate - far safer than the typical Automotive Assembly workplace, earning a grade A.
- A
- Excellent Safety Record
- 1.4
- avg TCR · per 100 workers
- 3.3
- industry benchmark (BLS)
- 233
- recordable injuries tracked
Grade compares Detroit Assembly Complex Mack's OSHA Total Case Rate to the BLS industry benchmark across 5 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
Detroit Assembly Complex Mack's yearly Total Case Rate, against the 3.3 industry benchmark.
Where Detroit Assembly Complex Mack falls in its industry
169 Automotive Assembly establishmentsSafer than 76% of graded establishments in this industry, whose median TCR is 4.0.
Narrower to Michigan alone (the establishments it most directly competes with for workers and contracts): ranked #11 safest of 32 Automotive Assembly employers in Michigan.
Detroit Assembly Complex Mack has an average TCR of 1.4, which is 42% of the industry average (3.3) for Automotive Assembly. This is significantly better than average.
The letter grade is a transparent derived index PlainSafetyScore computes from public OSHA ITA and BLS benchmark data, not an official OSHA rating or safety certification. Full formula and thresholds: Methodology.
Trend analysis for Detroit Assembly Complex Mack
Between 2020 and 2024, Detroit Assembly Complex Mack's Total Case Rate worsened from 0.4 to 1.2 recordable injuries per 100 full-time workers, a 166% increase across 4 years of OSHA reporting.
The safest year on record was 2020, at a TCR of 0.4, while 2022 saw the highest rate, at 2.1, a spread of 1.7 points between the best and worst reporting years. That's a wide swing relative to the establishment's overall rate, worth checking the year-by-year table below for whether a single severe year is driving the average, rather than a sustained trend.
Summed across those 5 reporting years, Detroit Assembly Complex Mack recorded 233 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 5-year trend above alongside establishment size, since a larger workforce naturally accumulates more raw incidents even at a lower per-100-worker rate.
Verify This Employer with OSHA
All injury, illness, and fatality figures on this page are sourced from Detroit Assembly Complex Mack'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 336111 - Automotive Assembly.
DART Rate, Transparent Calculation (2024)
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 ÷ 6,641,597 hours worked = 1.11 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Detroit Assembly Complex Mack (this establishment) | 1.40 | OSHA ITA Form 300A, 5-year avg |
| Chassis, automobile, manufacturing industry avg | 3.30 | BLS IIF, NAICS 336111 |
| Michigan 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 Detroit Assembly Complex Mack 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.
- 2024: 39 reportable incidents · 35 injuries, 4 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2023: 83 reportable incidents · 66 injuries, 17 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2022: 100 reportable incidents · 70 injuries, 30 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2021: 63 reportable incidents · 58 injuries, 5 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2020: 4 reportable incidents · 4 injuries, 0 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 |
|---|---|---|---|---|---|
| 2024 | 1.2 | 1.1 | 35 | 4 | 0 |
| 2023 | 1.8 | 1.6 | 66 | 17 | 0 |
| 2022 | 2.1 | 1.9 | 70 | 30 | 0 |
| 2021 | 1.4 | 0.7 | 58 | 5 | 0 |
| 2020 | 0.4 | 0.4 | 4 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Detroit Assembly Complex Mack's reported OSHA injury record, strong versus its Automotive Assembly peers, but not a guarantee about any single site today.
- At 42% of the Automotive Assembly benchmark, Detroit Assembly Complex Mack reports fewer injuries than typical peers, still worth asking how safety is managed day to day. Know your rights
- Judge this record against the wider Automotive Assembly 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 Detroit Assembly Complex Mack's safety grade?
How many injuries has Detroit Assembly Complex Mack reported?
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Read our methodology - how this data is sourced, computed, and verified.
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Every figure and grade on PlainSafetyScore is computed directly from OSHA's published Injury Tracking Application data and BLS industry benchmarks, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these safety grades, or report a data error. Data current as of 2016-2024 OSHA ITA release.