Plumbing and heating contractors · Delaware

J.F. Sobieski Mechanical Contractors, Inc.

Wilmington, DE · ~429 workers · 3 years of OSHA Injury Tracking Application data.

C
Average Safety Record
2.6
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

J.F. Sobieski Mechanical Contractors, Inc. runs at 93% of its industry's injury rate - about level with the typical Plumbing and heating contractors workplace, earning a grade C.

J.F. Sobieski Mechanical Contractors, Inc.: 2.6 TCR = 93% of Plumbing and heating contractors BLS 2.8 · 3y Form 300A (see methodology below)

J.F. Sobieski Mechanical Contractors, Inc. safety composite

J.F. Sobieski Mechanical Contractors, Inc. scores strongest on total case rate (tcr) (safer than 59% of same-industry peers) and weakest on dart rate (safer than 49%), 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

54/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.61 per 100 workers

Safer than 59% of industry peers

DART rate
D 1.23 per 100 workers

Safer than 49% 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

J.F. Sobieski Mechanical Contractors, Inc.: 2.1 → 3.7 TCR

Peak year 2018 @ 3.7 TCR · DART/TCR 0.47× in 2018

J.F. Sobieski Mechanical Contractors, Inc.'s TCR rose 1.5 from 2.1 in 2016 to 3.7 in 2018. In 2018, DART was 0.47× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Wilmington, DE AT/BELOW-IND · MID

Grade C · TCR 2.6 · 93% of ind

  • DART 1.2 DART
  • RANK #14/32
  • PHOTO Cool Air Mechanical …
  • BOOK 3y book
  • INJ 34 inj
  • SIZE ~429 FTE

Nearest TCR peer: Cool Air Mechanical Inc (0.0 TCR gap)

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

J.F. Sobieski Mechanical Contractors, Inc. in the TCR neighbourhood

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

TCR

What this shows J.F. Sobieski Mechanical Contractors, Inc. averages 2.6 TCR (93% of the Plumbing and heating contractors BLS benchmark).

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

J.F. Sobieski Mechanical Contractors, Inc. TCR series: 2016=2.1 · 2017=2 · 2018=3.7 · BLS 2.8

Where J.F. Sobieski Mechanical Contractors, Inc. falls in its industry

5,793 Plumbing and heating contracto establishments

Safer than 59% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Delaware alone (the establishments it most directly competes with for workers and contracts): ranked #14 safest of 32 Plumbing and heating contracto employers in Delaware.

J.F. Sobieski Mechanical Contractors, Inc. (429 employees, TCR 2.6) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3 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 05101520 Average employees Total Case Rate J.F. Sobieski Mechanical Contractors, Inc.
J.F. Sobieski Mechanical Contractors, Inc. (429 employees, TCR 2.6) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

J.F. Sobieski Mechanical Contractors, Inc. has more employees than the Plumbing and heating contractors median and a lower injury rate than the industry's median TCR of 3.3. 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
2018 3.7 1.2 18 0 0
2017 2.0 0.0 8 0 0
2016 2.1 1.6 8 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · DE · Wilmington

5,793 Plumbing and heating contractors employers nationwide with a credible TCR · 1,487 rated employers in Delaware with headcount on file · 309 employers in Wilmington, DE · 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 Cool Air Mechanical Inc 2.6 TCR
NAICS-TCR PIPCO 2.6 TCR
NAICS-TCR West Chester Mechanical Contractors 2.6 TCR
NAICS-TCR Isaac heating and air conditioning Twin Tiers 2.6 TCR
STATE-SIZE AAA Club Alliance - Newark Operations Center 431 FTE
STATE-SIZE 11706 425 FTE
STATE-SIZE International Flavors and Fragrances 439 FTE
STATE-SIZE MeadowWood Behavioral Health System 414 FTE
CITY-NEAR 10 Wilmington 9,107 FTE
CITY-NEAR AstraZeneca Pharmaceuticals (Commercial Field-Based Personnel) 4,907 FTE
CITY-NEAR Amazon.com Services LLC - MTN1 3,143 FTE
CITY-NEAR Hatzel & Buehler, Inc. 1,841 FTE
NAT-TCR United Dairy Farmers Store 177 2.6 TCR
NAT-TCR Wausau (Wiwas) 2.6 TCR
NAT-TCR Power Services : RT - Cincinnati, OH, USA 2.6 TCR
NAT-TCR NA-US-TX-Ft Worth-Northern Cross Boulevard 2.6 TCR
NAT-SIZE Police Heliport/Field Support-FM 429 FTE
NAT-SIZE Michels Pipeline- Hollidaysburg, PA 429 FTE
NAT-SIZE Milestone Centers, Inc. 429 FTE
NAT-SIZE Briggs & Stratton Statesboro Plant 429 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: 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.