Marine construction · California

Marathon Construction Corporation

Lakeside, CA · ~21 workers · 6 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
7.2
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Marathon Construction Corporation runs at 259% of its industry's injury rate - far more dangerous than the typical Marine construction workplace, earning a grade F.

Marathon Construction Corporation: 7.2 TCR = 259% of Marine construction BLS 2.8 · 6y Form 300A (see methodology below)

Marathon Construction Corporation safety composite

Marathon Construction Corporation scores strongest on dart rate (safer than 73% of same-industry peers) and weakest on total case rate (tcr) (safer than 6%), 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).

D

41/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 7.24 per 100 workers

Safer than 6% of industry peers

DART rate
C 0 per 100 workers

Safer than 73% 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%).

Marathon Construction Corporation held a steady TCR band

Marathon Construction Corporation's TCR held near 0.0 from 0.0 in 2018 to 0.0 in 2024. Peak filing year was 2021 at 38.4 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2018=0.0 · 2019=0.0 · 2020=0.0 · 2021=38.4 · 2022=5.0 · 2024=0.0

OSHA ITA Form 300A scorecard

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

Grade F · TCR 7.2 · 259% of ind

  • DART 0.0 DART
  • RANK #85/92
  • PHOTO Midwest Railroad Mai…
  • BOOK 6y book
  • INJ 0 inj
  • SIZE ~21 FTE

Nearest TCR peer: Midwest Railroad Maintenance & Construction, LLC. (0.0 TCR gap)

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

Marathon Construction Corporation in the TCR neighbourhood

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

TCR

What this shows Marathon Construction Corporation averages 7.2 TCR (259% of the Marine construction BLS benchmark).

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

Marathon Construction Corporation TCR series: 2018=0 · 2019=0 · 2020=0 · 2021=38.4 · 2022=5 · 2024=0 · BLS 2.8

Where Marathon Construction Corporation falls in its industry

932 Marine construction establishments

Safer than 6% 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 #85 safest of 92 Marine construction employers in California.

Marathon Construction Corporation (21 employees, TCR 7.2) 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 Marathon Construction Corporation
Marathon Construction Corporation (21 employees, TCR 7.2) among 29 same-industry peers, split at the industry median of 69 employees and a TCR of 1.5

Marathon Construction Corporation has fewer employees than the Marine 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 0.0 0.0 0 0 0
2022 5.0 5.0 0 1 0
2021 38.4 38.4 0 4 0
2020 0.0 0.0 0 0 0
2019 0.0 0.0 0 0 0
2018 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

237990 · CA · Lakeside

932 Marine construction employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 55 employers in Lakeside, 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 Midwest Railroad Maintenance & Construction, LLC. 7.3 TCR
NAICS-TCR Main Office 7.3 TCR
NAICS-TCR HDD Willco, Inc. 7.1 TCR
NAICS-TCR JFShea Construction-KY 7.1 TCR
STATE-SIZE Poso Ridge,LLC 21 FTE
STATE-SIZE Fonseca & Fonseca, Inc. 21 FTE
STATE-SIZE TELESIS ONION CO., INC. 21 FTE
STATE-SIZE Mayflower Farms Inc 21 FTE
CITY-NEAR Barona Resort & Casino 2,751 FTE
CITY-NEAR LAKESIDE CA (SAN DIEGO) 336 FTE
CITY-NEAR LAKESIDE CA SAN DIEGO 323 FTE
CITY-NEAR AM Ortega (Lakeside) 249 FTE
NAT-TCR Yamaha Golf Car 7.2 TCR
NAT-TCR Brookdale Salem 7.2 TCR
NAT-TCR Careone at Teaneck 7.2 TCR
NAT-TCR The Heights of Summerlin 7.2 TCR
NAT-SIZE Water Worx Services, Inc 21 FTE
NAT-SIZE Annex 21 FTE
NAT-SIZE Brookdale Norman 21 FTE
NAT-SIZE Duer Construction Company 21 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, 2022, 2021, 2020, 2019, 2018. 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.