Plumbing contractors · California

Frank Marrone & Sons, Inc.

Name: Frank Marrone & Sons, Inc. Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

El Monte, CA · ~43 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

F
Failing Safety Record: 8.5
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Frank Marrone & Sons, Inc. runs at 303% of its industry's injury rate - far more dangerous than the typical Plumbing contractors workplace, earning a grade F.

Frank Marrone & Sons, Inc.: 8.5 TCR = 303% of Plumbing contractors BLS 2.8 · 2y Form 300A (see methodology below)

Frank Marrone & Sons, Inc. safety composite

Frank Marrone & Sons, Inc. scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 15%), 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).

29/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 8.47 per 100 workers

Safer than 15% of industry peers
DART rate: F 2.92 per 100 workers

Safer than 30% 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

−5.3

2019→2020

Frank Marrone & Sons, Inc. injury rate improved

Frank Marrone & Sons, Inc.'s TCR fell 5.3 from 11.1 in 2019 to 5.8 in 2020. Peak filing year was 2019 at 11.1 TCR. In 2020, DART was 0.34× this establishment's average TCR (severity share of cases).

2019=11.1 · 2020=5.8

OSHA ITA Form 300A scorecard

Establishment book 238220 · El Monte, CA ABOVE-IND · SMALL

Grade F · TCR 8.5 · 303% of ind

DART 2.9 DART
RANK #471/594
PHOTO HVAC
BOOK 2y book
INJ 6 inj
SIZE ~43 FTE

Nearest TCR peer: HVAC (0.0 TCR gap)

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

This site

8.5
HVAC

8.5
Horizon Servic

8.5
Thornton Heati

8.5
ABC Plumbing,

8.5

What this shows Frank Marrone & Sons, Inc. averages 8.5 TCR (303% of the Plumbing contractors BLS benchmark).

Frank Marrone & Sons, Inc. TCR series: 2019=11.1 · 2020=5.8 · BLS 2.8

Where Frank Marrone & Sons, Inc. falls in its industry

5,793 Plumbing contractors establishments

Safer than 15% of graded establishments in this industry, whose median TCR is 3.3.

Grade F

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #471 safest of 594 Plumbing contractors employers in California.

Frank Marrone & Sons, Inc. (43 employees, TCR 8.5) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Frank Marrone & Sons, Inc. has fewer employees than the Plumbing contractors median and a higher 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
2020	5.8	2.9	1	1	0
2019	11.1	4.5	5	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · El Monte

5,793 Plumbing contractors employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 71 employers in El Monte, CA · 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	HVAC	GILROY, CA	8.5 TCR
NAICS-TCR	Horizon Services - MD	WINDSOR MILL, MD	8.5 TCR
NAICS-TCR	Thornton Heating	KETCHUM, ID	8.5 TCR
NAICS-TCR	ABC Plumbing, Air, and Heat	CLEARWATER, FL	8.5 TCR
STATE-SIZE	Robert & Sandra Garcia Farming Partnership	LIVINGSTON	43 FTE
STATE-SIZE	ARVIN ADMINISTRATION	ARVIN	43 FTE
STATE-SIZE	Donald W Beeman	WOODLAND	43 FTE
STATE-SIZE	KG Vineyard Management, LLC	LODI	43 FTE
CITY-NEAR	California Department of Transportation Facility 231	El Monte	2,546 FTE
CITY-NEAR	AMZL : DPS1	El Monte	1,431 FTE
CITY-NEAR	CMS Telstar	El Monte	777 FTE
CITY-NEAR	D Longo, LLC dba Longo Toyota	El Monte	612 FTE
NAT-TCR	Smithtown Uncle Giuseppe's, Inc.	Smithtown, NY	8.5 TCR
NAT-TCR	City of Waverly	Waverly, IA	8.5 TCR
NAT-TCR	CMA	Bolivar, OH	8.5 TCR
NAT-TCR	Delta	Delta, OH	8.5 TCR
NAT-SIZE	Two Men and a Truck, Springfield, MO	Springfield, MO	43 FTE
NAT-SIZE	VAM USA Ohio	Youngstown, OH	43 FTE
NAT-SIZE	Price Rite Store 333 Pittsfield	Pittsfield, MA	43 FTE
NAT-SIZE	General Mills Great Falls	Great Falls, MT	43 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: 2020, 2019. 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.