Semiconductor devices manufacturing · New Hampshire

Allegro MicroSystems (Manchester)

Name: Allegro MicroSystems (Manchester) Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Manchester, NH · ~392 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 0.5
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Allegro MicroSystems (Manchester) runs at 15% of its industry's injury rate - far safer than the typical Semiconductor devices manufacturing workplace, earning a grade A.

Allegro MicroSystems (Manchester): 0.5 TCR = 15% of Semiconductor devices manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Allegro MicroSystems (Manchester) safety composite

Allegro MicroSystems (Manchester) scores strongest on dart rate (safer than 77% 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).

68/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 0.51 per 100 workers

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

Safer than 77% 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

−1.3

2022→2024

Allegro MicroSystems (Manchester) injury rate improved

Allegro MicroSystems (Manchester)'s TCR fell 1.3 from 1.3 in 2022 to 0.0 in 2024. Peak filing year was 2022 at 1.3 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2022=1.3 · 2023=0.3 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 334413 · Manchester, NH AT/BELOW-IND · MID

Grade A · TCR 0.5 · 15% of ind

DART 0.0 DART
RANK #3/10
PHOTO Lehi
BOOK 3y book
INJ 2 inj
SIZE ~392 FTE

Nearest TCR peer: Lehi (0.0 TCR gap)

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0.5
Lehi

0.5
HORIBA Instrum

0.5
Lumileds

0.5
NXP USA, Inc C

0.5

What this shows Allegro MicroSystems (Manchester) averages 0.5 TCR (15% of the Semiconductor devices manufacturing BLS benchmark).

Allegro MicroSystems (Manchester) TCR series: 2022=1.3 · 2023=0.3 · 2024=0 · BLS 3.3

Where Allegro MicroSystems (Manchester) falls in its industry

437 Semiconductor devices manufact establishments

Safer than 70% of graded establishments in this industry, whose median TCR is 0.9.

Grade A

More dangerous than peersSafer than peers

Narrower to New Hampshire alone (the establishments it most directly competes with for workers and contracts): ranked #3 safest of 10 Semiconductor devices manufact employers in New Hampshire.

Allegro MicroSystems (Manchester) (392 employees, TCR 0.5) among 29 same-industry peers, split at the industry median of 216 employees and a TCR of 0.9

Allegro MicroSystems (Manchester) has more employees than the Semiconductor devices manufacturing median and a lower 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	Illnesses
2024	0.0	0.0	0	0
2023	0.3	0.3	0	1
2022	1.3	1.0	2	3

OSHA ITA peer cross-reference

Establishment peer ledger

334413 · NH · Manchester

437 Semiconductor devices manufacturing employers nationwide with a credible TCR · 2,718 rated employers in New Hampshire with headcount on file · 253 employers in Manchester, NH · 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	Lehi	LEHI, UT	0.5 TCR
NAICS-TCR	HORIBA Instruments Austin	AUSTIN, TX	0.5 TCR
NAICS-TCR	Lumileds	SAN JOSE, CA	0.5 TCR
NAICS-TCR	NXP USA, Inc Chandler	CHANDLER, AZ	0.5 TCR
STATE-SIZE	Asplundh Tree Expert LLC - 028	CONCORD	392 FTE
STATE-SIZE	Market Basket #63	EPPING	390 FTE
STATE-SIZE	MANCHESTER_1441074	MANCHESTER	390 FTE
STATE-SIZE	Speare Memorial Hospital	PLYMOUTH	390 FTE
CITY-NEAR	Point32Health Manchester	Manchester	4,440 FTE
CITY-NEAR	Elliot Hospital	Manchester	2,745 FTE
CITY-NEAR	Catholic Medical Center	Manchester	2,086 FTE
CITY-NEAR	15966	Manchester	1,154 FTE
NAT-TCR	AV Westford MA	Westford, MA	0.5 TCR
NAT-TCR	Performance Mechanical Inc. Pittsburg Area (Main Office)	Pittsburg, CA	0.5 TCR
NAT-TCR	Meadow Star	Pennock, MN	0.5 TCR
NAT-TCR	Merchants Financial Group, Inc.	Winona, MN	0.5 TCR
NAT-SIZE	Laurens County Medical Campus	Clinton, SC	392 FTE
NAT-SIZE	MillerKnoll Seating Greenhouse	Holland, MI	392 FTE
NAT-SIZE	MasterBrand Cabinets, Inc.	Jasper, IN	392 FTE
NAT-SIZE	Woodward Inc. - Drake Facility	Fort Collins, CO	392 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.