Mechanical contractors · Maryland

Heffron Company

Name: Heffron Company Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Kensington, MD · ~170 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 1.2
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Heffron Company runs at 43% of its industry's injury rate - far safer than the typical Mechanical contractors workplace, earning a grade A.

Heffron Company: 1.2 TCR = 43% of Mechanical contractors BLS 2.8 · 3y Form 300A (see methodology below)

Heffron Company safety composite

Heffron Company scores strongest on total case rate (tcr) (safer than 83% 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).

66/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 1.19 per 100 workers

Safer than 83% of industry peers
DART rate: C 0.57 per 100 workers

Safer than 58% 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

Heffron Company: 0.7 → 1.1 TCR

Peak year 2023 @ 1.7 TCR · DART/TCR 0.48× in 2024

Heffron Company's TCR rose 0.4 from 0.7 in 2022 to 1.1 in 2024. Peak filing year was 2023 at 1.7 TCR. In 2024, DART was 0.48× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Kensington, MD AT/BELOW-IND · MID

Grade A · TCR 1.2 · 43% of ind

DART 0.6 DART
RANK #24/121
PHOTO W D Manor Mechanical…
BOOK 3y book
INJ 6 inj
SIZE ~170 FTE

Nearest TCR peer: W D Manor Mechanical Contractors Inc (0.0 TCR gap)

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This site

1.2
W D Manor Mech

1.2
Poole & Kent M

1.2
Midwest Mechan

1.2
CFP NC HICKORY

1.2

What this shows Heffron Company averages 1.2 TCR (43% of the Mechanical contractors BLS benchmark).

Heffron Company TCR series: 2022=0.7 · 2023=1.7 · 2024=1.1 · BLS 2.8

Where Heffron Company falls in its industry

5,793 Mechanical contractors establishments

Safer than 83% of graded establishments in this industry, whose median TCR is 3.3.

Grade A

More dangerous than peersSafer than peers

Narrower to Maryland alone (the establishments it most directly competes with for workers and contracts): ranked #24 safest of 121 Mechanical contractors employers in Maryland.

Heffron Company (170 employees, TCR 1.2) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Heffron Company has more employees than the Mechanical 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
2024	1.1	0.6	2
2023	1.7	1.1	3
2022	0.7	0.7	1

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · MD · Kensington

5,793 Mechanical contractors employers nationwide with a credible TCR · 7,213 rated employers in Maryland with headcount on file · 20 employers in Kensington, MD · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	W D Manor Mechanical Contractors Inc	PHOENIX, AZ	1.2 TCR
NAICS-TCR	Poole & Kent Main Office	BALTIMORE, MD	1.2 TCR
NAICS-TCR	Midwest Mechanical Group	LOMBARD, IL	1.2 TCR
NAICS-TCR	CFP NC HICKORY	HICKORY, NC	1.2 TCR
STATE-SIZE	Orndorff & Spaid Inc.	BELTSVILLE	170 FTE
STATE-SIZE	Maryland- Supply Chain Center	ODENTON	170 FTE
STATE-SIZE	106003	CUMBERLAND	170 FTE
STATE-SIZE	100310	BOWIE	170 FTE
CITY-NEAR	Sentral Building Services, llc	Kensington	602 FTE
CITY-NEAR	Rock Spring Contracting	Kensington	400 FTE
CITY-NEAR	Kensington Park Senior Living	Kensington	253 FTE
CITY-NEAR	MBB Delivery LLC	Kensington	166 FTE
NAT-TCR	Matter Surfaces, Inc. MA	Stoughton, MA	1.2 TCR
NAT-TCR	Euclid Glass & Steel Door, Inc.	Willoughby, OH	1.2 TCR
NAT-TCR	DGI Menard, Inc.	Carnegie, PA	1.2 TCR
NAT-TCR	HSGCL-Cone-Health Services Physician Prac	Greensboro, NC	1.2 TCR
NAT-SIZE	Upstate Niagara Cooperative Inc - Buffalo	Buffalo, NY	170 FTE
NAT-SIZE	Ambassador Centerville Management LLC	Centerville, IN	170 FTE
NAT-SIZE	Perquimans County	Hertford, NC	170 FTE
NAT-SIZE	Morgan Olson Plants 1, 2, &3	Sturgis, MI	170 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. 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.