Masonry · Massachusetts

MJM Masonry Inc

Arlington, MA · ~48 workers · 8 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.3
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

MJM Masonry Inc runs at 46% of its industry's injury rate - far safer than the typical Masonry workplace, earning a grade A.

MJM Masonry Inc: 1.3 TCR = 46% of Masonry BLS 2.8 · 8y Form 300A (see methodology below)

MJM Masonry Inc safety composite

MJM Masonry Inc scores strongest on total case rate (tcr) (safer than 89% of same-industry peers) and weakest on dart rate (safer than 29%), 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).

C

59/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 1.3 per 100 workers

Safer than 89% of industry peers

DART rate
F 3.88 per 100 workers

Safer than 29% of industry peers

Fatalities
D 0

Safer than 51% 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

MJM Masonry Inc: 2.5 → 3.9 TCR

Peak year 2024 @ 3.9 TCR · DART/TCR 2.98× in 2024

MJM Masonry Inc's TCR rose 1.4 from 2.5 in 2016 to 3.9 in 2024. In 2024, DART was 2.98× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238140 · Arlington, MA AT/BELOW-IND · SMALL

Grade A · TCR 1.3 · 46% of ind

  • DART 3.9 DART
  • RANK #3/21
  • PHOTO Brazos Masonry, Inc.
  • BOOK 8y book
  • INJ 5 inj
  • SIZE ~48 FTE

Nearest TCR peer: Brazos Masonry, Inc. (0.0 TCR gap)

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

MJM Masonry Inc in the TCR neighbourhood

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

TCR

What this shows MJM Masonry Inc averages 1.3 TCR (46% of the Masonry BLS benchmark).

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

MJM Masonry Inc TCR series: 2016=2.5 · 2017=0 · 2018=0 · 2019=2.1 · 2020=0 · 2022=2 · 2023=0 · 2024=3.9 · BLS 2.8

Where MJM Masonry Inc falls in its industry

703 Masonry establishments

Safer than 89% 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 #3 safest of 21 Masonry employers in Massachusetts.

MJM Masonry Inc (48 employees, TCR 1.3) among 29 same-industry peers, split at the industry median of 52 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 0200400600 0246810 Average employees Total Case Rate MJM Masonry Inc
MJM Masonry Inc (48 employees, TCR 1.3) among 29 same-industry peers, split at the industry median of 52 employees and a TCR of 3.9

MJM Masonry Inc has fewer employees than the Masonry median and a lower 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 3.9 3.9 1 0 0
2023 0.0 0.0 0 0 0
2022 2.0 2.0 1 0 0
2020 0.0 0.0 0 0 0
2019 2.1 2.1 1 0 0
2018 0.0 0.0 0 0 0
2017 0.0 0.0 0 0 0
2016 2.5 2.5 2 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238140 · MA · Arlington

703 Masonry employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 21 employers in Arlington, 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 Brazos Masonry, Inc. 1.3 TCR
NAICS-TCR Zampell Refractories Inc. All Divisions 1.3 TCR
NAICS-TCR D&D Masonry, Inc 1.3 TCR
NAICS-TCR Midwest Masonry, Inc. 1.3 TCR
STATE-SIZE Payne|Bouchier Inc 48 FTE
STATE-SIZE Rise Construction Management 48 FTE
STATE-SIZE NA-US-MA-South Dennis-Western Boulevard 48 FTE
STATE-SIZE Plymouth MA 48 FTE
CITY-NEAR Armstrong Ambulance Service 294 FTE
CITY-NEAR Jimmy's Steer House - Arlington 128 FTE
CITY-NEAR 10507 Arlington Center 127 FTE
CITY-NEAR MA1528-BVSL-BV ARLINGTON 127 FTE
NAT-TCR 096/Pittsburgh 1.3 TCR
NAT-TCR Salem Electric Company 1.3 TCR
NAT-TCR Owens Corning 1.3 TCR
NAT-TCR Jaguar Energy Services, LLC 1.3 TCR
NAT-SIZE Wise Correctional Unit #18 48 FTE
NAT-SIZE Heartland Metals, Inc. 48 FTE
NAT-SIZE Polymer Science 48 FTE
NAT-SIZE Municipio Autonomo De Caguas Departamento De Vivienda Municipal Sec Desarrollo Humano 14218 48 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, 2020, 2019, 2018, 2017, 2016. 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.