Dredging Contractor - Heavy Civil & Engineering Construction · Illinois
Great Lakes Dredge & Dock Company LLC
Oak Brook, IL · ~1,070 workers · 2 years of OSHA Injury Tracking Application data.
- A
- Excellent Safety Record
- 1.3
- Avg TCR
- 2.8
- Industry avg
- 0
- Fatalities
The verdict
Great Lakes Dredge & Dock Company LLC runs at 47% of its industry's injury rate - far safer than the typical Dredging Contractor - Heavy Civil & Engineering Construction workplace, earning a grade A.
- A
- Excellent Safety Record
- 1.3
- avg TCR · per 100 workers
- 2.8
- industry benchmark (BLS)
- 41
- recordable injuries tracked
Grade compares Great Lakes Dredge & Dock Company LLC's OSHA Total Case Rate to the BLS industry benchmark across 2 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
Great Lakes Dredge & Dock Company LLC's yearly Total Case Rate, against the 2.8 industry benchmark.
Where Great Lakes Dredge & Dock Company LLC falls in its industry
1,364 Dredging Contractor - Heavy Ci establishmentsSafer than 37% of graded establishments in this industry, whose median TCR is 0.7.
Narrower to Illinois alone (the establishments it most directly competes with for workers and contracts): ranked #14 safest of 28 Dredging Contractor - Heavy Ci employers in Illinois.
Great Lakes Dredge & Dock Company LLC has an average TCR of 1.3, which is 47% of the industry average (2.8) for Dredging Contractor - Heavy Civil & Engineering Construction. 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 Great Lakes Dredge & Dock Company LLC
Between 2017 and 2018, Great Lakes Dredge & Dock Company LLC's Total Case Rate improved from 1.7 to 0.9 recordable injuries per 100 full-time workers, a 46% decrease across 1 year of OSHA reporting.
The safest year on record was 2018, at a TCR of 0.9, while 2017 saw the highest rate, at 1.7, a spread of 0.8 points between the best and worst reporting years. That's a comparatively narrow spread, suggesting a fairly consistent safety record across the 2 years with a usable rate on file, rather than one outlier year skewing the multi-year average.
Summed across those 2 reporting years, Great Lakes Dredge & Dock Company LLC recorded 41 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 2-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 Great Lakes Dredge & Dock Company LLC'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 237990 - Dredging Contractor - Heavy Civil & Engineering Construction.
DART Rate, Transparent Calculation (2018)
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.
7 DART incidents × 200,000 ÷ 3,885,188 hours worked = 0.36 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Great Lakes Dredge & Dock Company LLC (this establishment) | 1.32 | OSHA ITA Form 300A, 2-year avg |
| Earth retention system construction industry avg | 2.80 | BLS IIF, NAICS 237990 |
| Illinois 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 Great Lakes Dredge & Dock Company LLC 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.
- 2018: 18 reportable incidents · 17 injuries, 1 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2017: 25 reportable incidents · 24 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 |
|---|---|---|---|---|---|
| 2018 | 0.9 | 0.4 | 17 | 1 | 0 |
| 2017 | 1.7 | 0.8 | 24 | 1 | 0 |
What this grade means for you
Use this grade as a relative read on Great Lakes Dredge & Dock Company LLC's reported OSHA injury record, strong versus its Dredging Contractor - Heavy Civil & Engineering Construction peers, but not a guarantee about any single site today.
- At 47% of the Dredging Contractor - Heavy Civil & Engineering Construction benchmark, Great Lakes Dredge & Dock Company LLC 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 Dredging Contractor - Heavy Civil & Engineering Construction 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 Great Lakes Dredge & Dock Company LLC's safety grade?
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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.