Commercial building construction · Massachusetts

Cornerstone Design/Build Services, Inc.

Swansea, MA · ~21 workers · 3 years of OSHA Injury Tracking Application data.

B
Good Safety Record
1.9
Avg TCR
2.9
Industry avg
0
Fatalities
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The verdict

Cornerstone Design/Build Services, Inc. runs at 65% of its industry's injury rate - safer than the typical Commercial building construction workplace, earning a grade B.

Cornerstone Design/Build Services, Inc.: 1.9 TCR = 65% of Commercial building construction BLS 2.9 · 3y Form 300A (see methodology below)

Cornerstone Design/Build Services, Inc. safety composite

Cornerstone Design/Build Services, Inc. scores strongest on dart rate (safer than 73% of same-industry peers) and weakest on fatalities (safer than 51%), 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

62/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 1.89 per 100 workers

Safer than 58% of industry peers

DART rate
C 0 per 100 workers

Safer than 73% 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%).

TCR Δ

−5.7

2018→2023

Cornerstone Design/Build Services, Inc. injury rate improved

Cornerstone Design/Build Services, Inc.'s TCR fell 5.7 from 5.7 in 2018 to 0.0 in 2023. Peak filing year was 2018 at 5.7 TCR. In 2023, DART was 0× this establishment's average TCR (severity share of cases).

2018=5.7 · 2020=0.0 · 2023=0.0

OSHA ITA Form 300A scorecard

Establishment book 236220 · Swansea, MA AT/BELOW-IND · SMALL

Grade B · TCR 1.9 · 65% of ind

  • DART 0.0 DART
  • RANK #49/100
  • PHOTO March-Westin Company…
  • BOOK 3y book
  • INJ 1 inj
  • SIZE ~21 FTE

Nearest TCR peer: March-Westin Company, Inc (0.0 TCR gap)

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

Cornerstone Design/Build Services, Inc. in the TCR neighbourhood

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

TCR

What this shows Cornerstone Design/Build Services, Inc. averages 1.9 TCR (65% of the Commercial building construction BLS benchmark).

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

Cornerstone Design/Build Services, Inc. TCR series: 2018=5.7 · 2020=0 · 2023=0 · BLS 2.9

Where Cornerstone Design/Build Services, Inc. falls in its industry

4,692 Commercial building constructi establishments

Safer than 58% of graded establishments in this industry, whose median TCR is 2.3.

More dangerous than peersSafer than peers

Narrower to Massachusetts alone (the establishments it most directly competes with for workers and contracts): ranked #49 safest of 100 Commercial building constructi employers in Massachusetts.

Cornerstone Design/Build Services, Inc. (21 employees, TCR 1.9) among 29 same-industry peers, split at the industry median of 55 employees and a TCR of 2.3 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 0100200300400500 02468 Average employees Total Case Rate Cornerstone Design/Build Services, Inc.
Cornerstone Design/Build Services, Inc. (21 employees, TCR 1.9) among 29 same-industry peers, split at the industry median of 55 employees and a TCR of 2.3

Cornerstone Design/Build Services, Inc. has fewer employees than the Commercial building construction median and a lower injury rate than the industry's median TCR of 2.3. 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
2023 0.0 0.0 0 0 0
2020 0.0 0.0 0 0 0
2018 5.7 0.0 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

236220 · MA · Swansea

4,692 Commercial building construction employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 21 employers in Swansea, 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 March-Westin Company, Inc 1.9 TCR
NAICS-TCR Main Office 1.9 TCR
NAICS-TCR Boyett Construction Inc. 1.9 TCR
NAICS-TCR PCL Construction Services Inc. 1.9 TCR
STATE-SIZE Bellingham Energy 21 FTE
STATE-SIZE West Medway 21 FTE
STATE-SIZE West Medway Power Plant 21 FTE
STATE-SIZE Allendale Biomass LLC 21 FTE
CITY-NEAR WM 2953 364 FTE
CITY-NEAR 2953 315 FTE
CITY-NEAR 2607 - Swansea 240 FTE
CITY-NEAR Cardi's Furniture Swansea 175 FTE
NAT-TCR BCH Mechanical, LLC 1.9 TCR
NAT-TCR QSI Marshville 1.9 TCR
NAT-TCR Pikeville Svc Ctr 1.9 TCR
NAT-TCR S05034 - Chesser Island 1.9 TCR
NAT-SIZE Bluestone Communications Inc. - New Jersey 21 FTE
NAT-SIZE Glacial Trails Memory Care 21 FTE
NAT-SIZE Wickham Dive 21 FTE
NAT-SIZE TAI San Antonio 187 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: 2023, 2020, 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.