Construction management, water and sewer line · Maryland

Corinthian Contractors

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

Upper Marlboro, MD · ~178 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

D
Poor Safety Record: 3.4
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Corinthian Contractors runs at 120% of its industry's injury rate - more dangerous than the typical Construction management, water and sewer line workplace, earning a grade D.

Corinthian Contractors: 3.4 TCR = 120% of Construction management, water and sewer line BLS 2.8 · 2y Form 300A (see methodology below)

Corinthian Contractors safety composite

Corinthian Contractors scores strongest on fatalities (safer than 52% of same-industry peers) and weakest on dart rate (safer than 14%), 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).

36/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): D 3.37 per 100 workers

Safer than 44% of industry peers
DART rate: F 5 per 100 workers

Safer than 14% of industry peers
Fatalities: D 0

Safer than 52% 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

Corinthian Contractors: 1.7 → 5.0 TCR

Peak year 2021 @ 5.0 TCR · DART/TCR 1.48× in 2021

Corinthian Contractors's TCR rose 3.3 from 1.7 in 2017 to 5.0 in 2021. In 2021, DART was 1.48× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 237110 · Upper Marlboro, MD ABOVE-IND · MID

Grade D · TCR 3.4 · 120% of ind

DART 5.0 DART
RANK #20/34
PHOTO Fire Line Services, …
BOOK 2y book
INJ 9 inj
SIZE ~178 FTE

Nearest TCR peer: Fire Line Services, Inc, (0.0 TCR gap)

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This site

3.4
Fire Line Serv

3.4
Johnson Davis

3.4
Slater, Inc.

3.4
Burtech Pipeli

3.4

What this shows Corinthian Contractors averages 3.4 TCR (120% of the Construction management, water and sewer line BLS benchmark).

Corinthian Contractors TCR series: 2017=1.7 · 2021=5 · BLS 2.8

Where Corinthian Contractors falls in its industry

1,614 Construction management, water establishments

Safer than 44% of graded establishments in this industry, whose median TCR is 3.0.

Grade D

More dangerous than peersSafer than peers

Narrower to Maryland alone (the establishments it most directly competes with for workers and contracts): ranked #20 safest of 34 Construction management, water employers in Maryland.

Corinthian Contractors (178 employees, TCR 3.4) among 29 same-industry peers, split at the industry median of 54 employees and a TCR of 3.0

Corinthian Contractors has more employees than the Construction management, water and sewer median and a higher injury rate than the industry's median TCR of 3.0. 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
2021	5.0	5.0	6	0	0
2017	1.7	1.1	3	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

237110 · MD · Upper Marlboro

1,614 Construction management, water and sewer line employers nationwide with a credible TCR · 7,213 rated employers in Maryland with headcount on file · 98 employers in Upper Marlboro, 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	Fire Line Services, Inc,	FORT WORTH, TX	3.4 TCR
NAICS-TCR	Johnson Davis Inc	LANTANA, FL	3.4 TCR
NAICS-TCR	Slater, Inc.	FONTANA, CA	3.4 TCR
NAICS-TCR	Burtech Pipeline, Inc.	VISTA, CA	3.4 TCR
STATE-SIZE	Lakeforest 113	GAITHERSBURG	178 FTE
STATE-SIZE	Mall At Prince Georges 196	HYATTSVILLE	178 FTE
STATE-SIZE	6434	LAUREL	178 FTE
STATE-SIZE	PAB - Administration	SALISBURY	178 FTE
CITY-NEAR	Washington DC	Upper Marlboro	1,045 FTE
CITY-NEAR	3888 - East Coast Return Center	Upper Marlboro	447 FTE
CITY-NEAR	3881 - Upper Marlboro FDC	Upper Marlboro	431 FTE
CITY-NEAR	Thos. Somerville Co.	Upper Marlboro	368 FTE
NAT-TCR	Insulfoam - Dixon	Dixon, CA	3.4 TCR
NAT-TCR	43481b - Beaumont Tx Ges Pec	Beaumont, TX	3.4 TCR
NAT-TCR	Ennis-Flint Ennis-South	Ennis, TX	3.4 TCR
NAT-TCR	WC Chilton	Chilton, WI	3.4 TCR
NAT-SIZE	Smithfield Foods	Arnold, PA	178 FTE
NAT-SIZE	Coen Energy	Washington, PA	178 FTE
NAT-SIZE	Coastal Specialty Forest Products	Bow, NH	178 FTE
NAT-SIZE	Ohio Alpha EMC	Winter Springs, FL	178 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: 2021, 2017. 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.