Structural steel erecting or iron work contractors · Massachusetts

Daniel Marr & Son Company

South Boston, MA · ~121 workers · 7 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
10.1
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Daniel Marr & Son Company runs at 360% of its industry's injury rate - far more dangerous than the typical Structural steel erecting or iron work contractors workplace, earning a grade F.

Daniel Marr & Son Company: 10.1 TCR = 360% of Structural steel erecting or iron work contractors BLS 2.8 · 7y Form 300A (see methodology below)

Daniel Marr & Son Company safety composite

Daniel Marr & Son Company scores strongest on dart rate (safer than 80% of same-industry peers) and weakest on total case rate (tcr) (safer than 12%), 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

46/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 10.09 per 100 workers

Safer than 12% of industry peers

DART rate
B 0 per 100 workers

Safer than 80% of industry peers

Fatalities
D 0

Safer than 53% 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%).

TCR Δ

−9.3

2016→2024

Daniel Marr & Son Company injury rate improved

Daniel Marr & Son Company's TCR fell 9.3 from 12.1 in 2016 to 2.9 in 2024. Peak filing year was 2018 at 13.9 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2016=12.1 · 2018=13.9 · 2019=11.8 · 2021=9.3 · 2022=12.7 · 2023=7.9 · 2024=2.9

OSHA ITA Form 300A scorecard

Establishment book 238120 · South Boston, MA ABOVE-IND · MID

Grade F · TCR 10.1 · 360% of ind

  • DART 0.0 DART
  • RANK #12/13
  • PHOTO IMI, Inc
  • BOOK 7y book
  • INJ 56 inj
  • SIZE ~121 FTE

Nearest TCR peer: IMI, Inc (0.0 TCR gap)

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

Daniel Marr & Son Company in the TCR neighbourhood

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

TCR

What this shows Daniel Marr & Son Company averages 10.1 TCR (360% of the Structural steel erecting or iron work contractors BLS benchmark).

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

Daniel Marr & Son Company TCR series: 2016=12.1 · 2018=13.9 · 2019=11.8 · 2021=9.3 · 2022=12.7 · 2023=7.9 · 2024=2.9 · BLS 2.8

Where Daniel Marr & Son Company falls in its industry

705 Structural steel erecting or i establishments

Safer than 12% of graded establishments in this industry, whose median TCR is 3.9.

More dangerous than peersSafer than peers

Narrower to Massachusetts alone (the establishments it most directly competes with for workers and contracts): ranked #12 safest of 13 Structural steel erecting or i employers in Massachusetts.

Daniel Marr & Son Company (121 employees, TCR 10.1) among 29 same-industry peers, split at the industry median of 58 employees and a TCR of 3.9 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 050100150200250 051015 Average employees Total Case Rate Daniel Marr & Son Company
Daniel Marr & Son Company (121 employees, TCR 10.1) among 29 same-industry peers, split at the industry median of 58 employees and a TCR of 3.9

Daniel Marr & Son Company has more employees than the Structural steel erecting or iron work c median and a higher injury rate than the industry's median TCR of 3.9. 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
2024 2.9 0.0 3 0 0
2023 7.9 3.1 5 0 0
2022 12.7 1.8 7 0 0
2021 9.3 5.6 5 0 0
2019 11.8 7.4 8 0 0
2018 13.9 6.6 21 0 0
2016 12.1 3.5 7 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238120 · MA · South Boston

705 Structural steel erecting or iron work contractors employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 22 employers in South Boston, MA · 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 IMI, Inc 10.1 TCR
NAICS-TCR High Structural Erectors, LLC. 10.1 TCR
NAICS-TCR Black Iron Reinforcing, LLC 10.2 TCR
NAICS-TCR R&B Reinforcing Steel Corp. 10.2 TCR
STATE-SIZE Little Leaf Farms 121 FTE
STATE-SIZE Eversource - Yarmouth 121 FTE
STATE-SIZE Eversource - Somerville Electric 121 FTE
STATE-SIZE The Aulson Company, Inc. 121 FTE
CITY-NEAR Gillette Company South Boston Plant 1,256 FTE
CITY-NEAR McCourt Construction Company 248 FTE
CITY-NEAR 426 E. 1St St. 223 FTE
CITY-NEAR MA - South Boston, 426 E 1st St 155 FTE
NAT-TCR Trader Joe's 0082 Reno 10.1 TCR
NAT-TCR Coastal Service Express, Inc. 10.1 TCR
NAT-TCR New Milford Store 10.1 TCR
NAT-TCR Maine Course Hospitality Group - Augusta Hampton Inn 10.1 TCR
NAT-SIZE Marquis Energy LLC 121 FTE
NAT-SIZE Truck Country - Dubuque 121 FTE
NAT-SIZE Lennar New Jersey 121 FTE
NAT-SIZE Trader Joe's 0676 Woodmere 121 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, 2021, 2019, 2018, 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.