Transmission and distribution line construction · South Carolina

MasTec Transmission & Substation

Name: MasTec Transmission & Substation Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Gaffney, SC · ~162 workers · 6 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 1.1
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

MasTec Transmission & Substation runs at 41% of its industry's injury rate - far safer than the typical Transmission and distribution line construction workplace, earning a grade A.

MasTec Transmission & Substation: 1.1 TCR = 41% of Transmission and distribution line construction BLS 2.8 · 6y Form 300A (see methodology below)

MasTec Transmission & Substation safety composite

MasTec Transmission & Substation scores strongest on dart rate (safer than 78% of same-industry peers) and weakest on fatalities (safer than 52%), 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).

68/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 1.15 per 100 workers

Safer than 70% of industry peers
DART rate: B 0 per 100 workers

Safer than 78% 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%).

TCR Δ

−1.4

2017→2022

MasTec Transmission & Substation injury rate improved

MasTec Transmission & Substation's TCR fell 1.4 from 1.4 in 2017 to 0.0 in 2022. Peak filing year was 2018 at 3.0 TCR. In 2022, DART was 0× this establishment's average TCR (severity share of cases).

2017=1.4 · 2018=3.0 · 2019=0.5 · 2020=1.2 · 2021=0.9 · 2022=0.0

OSHA ITA Form 300A scorecard

Establishment book 237130 · Gaffney, SC AT/BELOW-IND · MID

Grade A · TCR 1.1 · 41% of ind

DART 0.0 DART
RANK #5/16
PHOTO Chain Electric Company
BOOK 6y book
INJ 13 inj
SIZE ~162 FTE

Nearest TCR peer: Chain Electric Company (0.0 TCR gap)

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

This site

1.1
Chain Electric

1.1
Power Ray LLC

1.1
Edwards Sanb

1.1
Henkels & McCo

1.1

What this shows MasTec Transmission & Substation averages 1.1 TCR (41% of the Transmission and distribution line construction BLS benchmark).

MasTec Transmission & Substation TCR series: 2017=1.4 · 2018=3 · 2019=0.5 · 2020=1.2 · 2021=0.9 · 2022=0 · BLS 2.8

Where MasTec Transmission & Substation falls in its industry

1,605 Transmission and distribution establishments

Safer than 70% of graded establishments in this industry, whose median TCR is 2.0.

Grade A

More dangerous than peersSafer than peers

Narrower to South Carolina alone (the establishments it most directly competes with for workers and contracts): ranked #5 safest of 16 Transmission and distribution employers in South Carolina.

MasTec Transmission & Substation (162 employees, TCR 1.1) among 29 same-industry peers, split at the industry median of 74 employees and a TCR of 2.0

MasTec Transmission & Substation has more employees than the Transmission and distribution line const median and a lower injury rate than the industry's median TCR of 2.0. 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
2022	0.0	0.0	0
2021	0.9	0.3	3
2020	1.2	0.6	4
2019	0.5	0.0	1
2018	3.0	0.8	4
2017	1.4	1.4	1

OSHA ITA peer cross-reference

Establishment peer ledger

237130 · SC · Gaffney

1,605 Transmission and distribution line construction employers nationwide with a credible TCR · 7,610 rated employers in South Carolina with headcount on file · 68 employers in Gaffney, SC · 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	Chain Electric Company	HATTIESBURG, MS	1.1 TCR
NAICS-TCR	Power Ray LLC	MIDLAND, TX	1.1 TCR
NAICS-TCR	Edwards Sanborn Solar Storage TerraGen1A 1B 20145007	MOJAVE, CA	1.1 TCR
NAICS-TCR	Henkels & McCoy, Inc. - Pomona, CA	POMONA, CA	1.1 TCR
STATE-SIZE	Winyah Generating Station	GEORGETOWN	162 FTE
STATE-SIZE	CarolinaPower, Inc.	GREER	162 FTE
STATE-SIZE	Core Molding Technologies	GAFFNEY	162 FTE
STATE-SIZE	2807-3040	INDIAN LAND	162 FTE
CITY-NEAR	Nestle Prepared Frozen Foods	Gaffney	1,103 FTE
CITY-NEAR	Nestle USA, Inc.	Gaffney	1,019 FTE
CITY-NEAR	FCCC-- Main	Gaffney	929 FTE
CITY-NEAR	Gaffney	Gaffney	426 FTE
NAT-TCR	Company	Niagara Falls, NY	1.1 TCR
NAT-TCR	United Engines	Oklahoma City, OK	1.1 TCR
NAT-TCR	PSSI - 0039 OSI Group - Oakland	Oakland, IA	1.1 TCR
NAT-TCR	H A Sack.Inc	Statesboro, GA	1.1 TCR
NAT-SIZE	Capri - Los Angeles	Pico Rivera, CA	162 FTE
NAT-SIZE	BComm Constructors, LLC	San Antonio, TX	162 FTE
NAT-SIZE	JBS Greeley Value Added	Greeley, CO	162 FTE
NAT-SIZE	RTC Aerospace - Chatsworth Division, Inc.	Chatsworth, CA	162 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: 2022, 2021, 2020, 2019, 2018, 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.