Concrete block laying · Michigan

Connolly Masonry

Clarkston, MI · ~30 workers · 2 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
6.0
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Connolly Masonry runs at 214% of its industry's injury rate - far more dangerous than the typical Concrete block laying workplace, earning a grade F.

Connolly Masonry: 6.0 TCR = 214% of Concrete block laying BLS 2.8 · 2y Form 300A (see methodology below)

Connolly Masonry safety composite

Connolly Masonry scores strongest on dart rate (safer than 80% of same-industry peers) and weakest on total case rate (tcr) (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).

D

52/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 6 per 100 workers

Safer than 29% of industry peers

DART rate
B 0 per 100 workers

Safer than 80% 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

−12.0

2022→2023

Connolly Masonry injury rate improved

Connolly Masonry's TCR fell 12.0 from 12.0 in 2022 to 0.0 in 2023. Peak filing year was 2022 at 12.0 TCR. In 2023, DART was 0× this establishment's average TCR (severity share of cases).

2022=12.0 · 2023=0.0

OSHA ITA Form 300A scorecard

Establishment book 238140 · Clarkston, MI ABOVE-IND · SMALL

Grade F · TCR 6.0 · 214% of ind

  • DART 0.0 DART
  • RANK #17/22
  • PHOTO Harris Masonry, Inc
  • BOOK 2y book
  • INJ 3 inj
  • SIZE ~30 FTE

Nearest TCR peer: Harris Masonry, Inc (0.0 TCR gap)

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

Connolly Masonry in the TCR neighbourhood

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

TCR

What this shows Connolly Masonry averages 6.0 TCR (214% of the Concrete block laying BLS benchmark).

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

Connolly Masonry TCR series: 2022=12 · 2023=0 · BLS 2.8

Where Connolly Masonry falls in its industry

703 Concrete block laying establishments

Safer than 29% of graded establishments in this industry, whose median TCR is 3.9.

More dangerous than peersSafer than peers

Narrower to Michigan alone (the establishments it most directly competes with for workers and contracts): ranked #17 safest of 22 Concrete block laying employers in Michigan.

Connolly Masonry (30 employees, TCR 6.0) 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 Connolly Masonry
Connolly Masonry (30 employees, TCR 6.0) among 29 same-industry peers, split at the industry median of 52 employees and a TCR of 3.9

Connolly Masonry has fewer employees than the Concrete block laying 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
2023 0.0 0.0 0 0 0
2022 12.0 4.0 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238140 · MI · Clarkston

703 Concrete block laying employers nationwide with a credible TCR · 16,393 rated employers in Michigan with headcount on file · 34 employers in Clarkston, MI · 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 Harris Masonry, Inc 6.0 TCR
NAICS-TCR Witmer Restoration LLC 6.0 TCR
NAICS-TCR Building Restoration Corporation - Madison 6.0 TCR
NAICS-TCR Integrated Exteriors 6.0 TCR
STATE-SIZE Kitchen Farms, Inc. 30 FTE
STATE-SIZE Revolution Farms 30 FTE
STATE-SIZE TES Filer City Station 30 FTE
STATE-SIZE United Fermi II Nuclear Power Plant Project 30 FTE
CITY-NEAR Oscar W. Larson Company (Corporate) 350 FTE
CITY-NEAR 018-00651 154 FTE
CITY-NEAR Lawrence Plasics 137 FTE
CITY-NEAR 018-00709 133 FTE
NAT-TCR Parkview Home, Inc. 6.0 TCR
NAT-TCR Big Lots Store #1880 West Mifflin, PA 6.0 TCR
NAT-TCR 5315 - Boise 6.0 TCR
NAT-TCR Unit #1960 6.0 TCR
NAT-SIZE Brookdale High Point 30 FTE
NAT-SIZE Highlands 30 FTE
NAT-SIZE Gray Construction Co 30 FTE
NAT-SIZE North Hero-Grand Isle Drawbrid 30 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, 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.