Breakwater construction · California

DA McCosker Construction Co

Valencia, CA · ~83 workers · 3 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
6.3
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

DA McCosker Construction Co runs at 225% of its industry's injury rate - far more dangerous than the typical Breakwater construction workplace, earning a grade F.

DA McCosker Construction Co: 6.3 TCR = 225% of Breakwater construction BLS 2.8 · 3y Form 300A (see methodology below)

DA McCosker Construction Co safety composite

DA McCosker Construction Co scores strongest on fatalities (safer than 52% of same-industry peers) and weakest on dart rate (safer than 2%), 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).

F

17/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 6.3 per 100 workers

Safer than 8% of industry peers

DART rate
F 10.81 per 100 workers

Safer than 2% of industry peers

Fatalities
D 0

Safer than 52% 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

DA McCosker Construction Co: 5.2 → 10.8 TCR

Peak year 2024 @ 10.8 TCR · DART/TCR 1.72× in 2024

DA McCosker Construction Co's TCR rose 5.7 from 5.2 in 2022 to 10.8 in 2024. In 2024, DART was 1.72× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 237990 · Valencia, CA ABOVE-IND · SMALL

Grade F · TCR 6.3 · 225% of ind

  • DART 10.8 DART
  • RANK #82/92
  • PHOTO Northwest Division
  • BOOK 3y book
  • INJ 9 inj
  • SIZE ~83 FTE

Nearest TCR peer: Northwest Division (0.0 TCR gap)

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

DA McCosker Construction Co in the TCR neighbourhood

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

TCR

What this shows DA McCosker Construction Co averages 6.3 TCR (225% of the Breakwater construction BLS benchmark).

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

DA McCosker Construction Co TCR series: 2022=5.2 · 2023=2.9 · 2024=10.8 · BLS 2.8

Where DA McCosker Construction Co falls in its industry

932 Breakwater construction establishments

Safer than 8% of graded establishments in this industry, whose median TCR is 1.5.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #82 safest of 92 Breakwater construction employers in California.

DA McCosker Construction Co (83 employees, TCR 6.3) among 29 same-industry peers, split at the industry median of 69 employees and a TCR of 1.5 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 051015 Average employees Total Case Rate DA McCosker Construction Co
DA McCosker Construction Co (83 employees, TCR 6.3) among 29 same-industry peers, split at the industry median of 69 employees and a TCR of 1.5

DA McCosker Construction Co has more employees than the Breakwater construction median and a higher injury rate than the industry's median TCR of 1.5. 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 10.8 10.8 7 1 0
2023 2.9 2.9 1 0 0
2022 5.2 5.2 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

237990 · CA · Valencia

932 Breakwater construction employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 186 employers in Valencia, CA · 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 Northwest Division 6.3 TCR
NAICS-TCR LHC, Inc 6.3 TCR
NAICS-TCR Stormwater Maintenance, LLC 6.3 TCR
NAICS-TCR Marine Contracting Group, Inc. 6.2 TCR
STATE-SIZE Sunny Slope Trees 83 FTE
STATE-SIZE Stone Land Co. (Grangeville) 83 FTE
STATE-SIZE Stone Land Co. (Stratford Shop) 83 FTE
STATE-SIZE Stone Land Co. (Lemoore Shop) 83 FTE
CITY-NEAR California Department of Transportation Facility 62 2,621 FTE
CITY-NEAR Henry Mayo Newhall Memorial Hospital 1,776 FTE
CITY-NEAR Boston Scientific Neuromodulation 1,455 FTE
CITY-NEAR Woodward HRT Santa Clarita 726 FTE
NAT-TCR MJB El Dorado 6.3 TCR
NAT-TCR Pensacola Plant 6.3 TCR
NAT-TCR 540-FC001 6.3 TCR
NAT-TCR 0000000045 Center City Skilled Nursing 6.3 TCR
NAT-SIZE Pro Delivery LLC 83 FTE
NAT-SIZE Dallas Sales Location 83 FTE
NAT-SIZE Tcw Inc-Sav 83 FTE
NAT-SIZE Upward Logistics Group LLC 83 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.