Semiconductor devices manufacturing · Maine

ON Semiconductor Western Ave

Name: ON Semiconductor Western Ave Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

South Portland, ME · ~305 workers · 4 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

B
Good Safety Record: 1.7
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

ON Semiconductor Western Ave runs at 50% of its industry's injury rate - safer than the typical Semiconductor devices manufacturing workplace, earning a grade B.

ON Semiconductor Western Ave: 1.7 TCR = 50% of Semiconductor devices manufacturing BLS 3.3 · 4y Form 300A (see methodology below)

ON Semiconductor Western Ave safety composite

ON Semiconductor Western Ave scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 13%), 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).

28/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 1.66 per 100 workers

Safer than 27% of industry peers
DART rate: F 1.74 per 100 workers

Safer than 13% 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

−0.4

2017→2020

ON Semiconductor Western Ave injury rate improved

ON Semiconductor Western Ave's TCR fell 0.4 from 2.5 in 2017 to 2.1 in 2020. Peak filing year was 2017 at 2.5 TCR. In 2020, DART was 1.05× this establishment's average TCR (severity share of cases).

2017=2.5 · 2018=1.4 · 2019=0.7 · 2020=2.1

OSHA ITA Form 300A scorecard

Establishment book 334413 · South Portland, ME AT/BELOW-IND · MID

Grade B · TCR 1.7 · 50% of ind

DART 1.7 DART
RANK P27
PHOTO Wolfspeed - Durham, NC
BOOK 4y book
INJ 19 inj
SIZE ~305 FTE

Nearest TCR peer: Wolfspeed - Durham, NC (0.0 TCR gap)

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This site

1.7
Wolfspeed - Du

1.7
Robert Bosch S

1.7
Coherent - AMD

1.7
Aloclek

1.6

What this shows ON Semiconductor Western Ave averages 1.7 TCR (50% of the Semiconductor devices manufacturing BLS benchmark).

ON Semiconductor Western Ave TCR series: 2017=2.5 · 2018=1.4 · 2019=0.7 · 2020=2.1 · BLS 3.3

Where ON Semiconductor Western Ave falls in its industry

437 Semiconductor devices manufact establishments

Safer than 27% of graded establishments in this industry, whose median TCR is 0.9.

Grade B

More dangerous than peersSafer than peers

ON Semiconductor Western Ave (305 employees, TCR 1.7) among 29 same-industry peers, split at the industry median of 216 employees and a TCR of 0.9

ON Semiconductor Western Ave has more employees than the Semiconductor devices manufacturing median and a higher injury rate than the industry's median TCR of 0.9. 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
2020	2.1	1.7	6
2019	0.7	0.4	2
2018	1.4	0.7	4
2017	2.5	1.4	7

OSHA ITA peer cross-reference

Establishment peer ledger

334413 · ME · South Portland

437 Semiconductor devices manufacturing employers nationwide with a credible TCR · 2,397 rated employers in Maine with headcount on file · 69 employers in South Portland, ME · 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	Wolfspeed - Durham, NC	DURHAM, NC	1.7 TCR
NAICS-TCR	Robert Bosch Semiconductor LLC	ROSEVILLE, CA	1.7 TCR
NAICS-TCR	Coherent - AMD (Pine Brook)	PINE BROOK, NJ	1.7 TCR
NAICS-TCR	Aloclek	HILLSBORO, OR	1.6 TCR
STATE-SIZE	BTB Poland Spring Factory	109 POLAND SPRING DRIVE	305 FTE
STATE-SIZE	Market Basket #75	BIDDEFORD	305 FTE
STATE-SIZE	Norridgewock Manufacturing	NORRIDGEWOCK	302 FTE
STATE-SIZE	2202	WINDHAM	308 FTE
CITY-NEAR	South Portland	South Portland	472 FTE
CITY-NEAR	ADUSA Dist DC 01 S. Portland ME	South Portland	417 FTE
CITY-NEAR	71011	South Portland	356 FTE
CITY-NEAR	InterMed - Foden Road location	South Portland	355 FTE
NAT-TCR	Johnson Elementary School	Milford, MI	1.7 TCR
NAT-TCR	Michigan Cat PSD	Novi, MI	1.7 TCR
NAT-TCR	CCNA Portland Branch	Portland, OR	1.7 TCR
NAT-TCR	DGS Aviation Services : ABQ - Albuquerque	Abq - Albuquerque, NM	1.7 TCR
NAT-SIZE	ARYZTA - Van Nuys	Van Nuys, CA	305 FTE
NAT-SIZE	Fruit Packing #4	Sanger, CA	305 FTE
NAT-SIZE	Newcomb and Company	Raleigh, NC	305 FTE
NAT-SIZE	Princeton R&D	Princeton, NJ	305 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, 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.