Organo-inorganic compound manufacturing · Massachusetts

Cambridge Isotope Labs (Tewksbury)

Tewksbury, MA · ~98 workers · 2 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.6
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Cambridge Isotope Labs (Tewksbury) runs at 18% of its industry's injury rate - far safer than the typical Organo-inorganic compound manufacturing workplace, earning a grade A.

Cambridge Isotope Labs (Tewksbury): 0.6 TCR = 18% of Organo-inorganic compound manufacturing BLS 3.3 · 2y Form 300A (see methodology below)

Cambridge Isotope Labs (Tewksbury) safety composite

Cambridge Isotope Labs (Tewksbury) scores strongest on total case rate (tcr) (safer than 79% of same-industry peers) and weakest on fatalities (safer than 50%), 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).

C

70/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 0.58 per 100 workers

Safer than 79% of industry peers

DART rate
B 0 per 100 workers

Safer than 75% of industry peers

Fatalities
D 0

Safer than 50% 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

−1.2

2023→2024

Cambridge Isotope Labs (Tewksbury) injury rate improved

Cambridge Isotope Labs (Tewksbury)'s TCR fell 1.2 from 1.2 in 2023 to 0.0 in 2024. Peak filing year was 2023 at 1.2 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2023=1.2 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 325199 · Tewksbury, MA AT/BELOW-IND · SMALL

Grade A · TCR 0.6 · 18% of ind

  • DART 0.0 DART
  • RANK #1/8
  • PHOTO Deer Park VCM Plant
  • BOOK 2y book
  • INJ 1 inj
  • SIZE ~98 FTE

Nearest TCR peer: Deer Park VCM Plant (0.0 TCR gap)

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

Cambridge Isotope Labs (Tewksbury) in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Cambridge Isotope Labs (Tewksbury) averages 0.6 TCR (18% of the Organo-inorganic compound manufacturing BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Cambridge Isotope Labs (Tewksbury) TCR series: 2023=1.2 · 2024=0 · BLS 3.3

Where Cambridge Isotope Labs (Tewksbury) falls in its industry

552 Organo-inorganic compound manu establishments

Safer than 79% of graded establishments in this industry, whose median TCR is 1.5.

More dangerous than peersSafer than peers

Narrower to Massachusetts alone (the establishments it most directly competes with for workers and contracts): ranked #1 safest of 8 Organo-inorganic compound manu employers in Massachusetts.

Cambridge Isotope Labs (Tewksbury) (98 employees, TCR 0.6) among 29 same-industry peers, split at the industry median of 73 employees and a TCR of 1.5 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 02004006008001,000 02468 Average employees Total Case Rate Cambridge Isotope Labs (Tewksbury)
Cambridge Isotope Labs (Tewksbury) (98 employees, TCR 0.6) among 29 same-industry peers, split at the industry median of 73 employees and a TCR of 1.5

Cambridge Isotope Labs (Tewksbury) has more employees than the Organo-inorganic compound manufacturing median and a lower injury rate than the industry's median TCR of 1.5. 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
2024 0.0 0.0 0 0 0
2023 1.2 0.0 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

325199 · MA · Tewksbury

552 Organo-inorganic compound manufacturing employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 64 employers in Tewksbury, MA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Deer Park VCM Plant 0.6 TCR
NAICS-TCR Cytec Solvay Group Willow Island Plant 0.6 TCR
NAICS-TCR BASF 0.6 TCR
NAICS-TCR Hopkinsville KY Facility 0.6 TCR
STATE-SIZE Cresco Labs - Uxbridge 98 FTE
STATE-SIZE Westfield Gas and Electric Light Department 98 FTE
STATE-SIZE NER Construction Management 98 FTE
STATE-SIZE Costa Brothers Masonry 98 FTE
CITY-NEAR Raytheon_Tewksbury_MA 2,348 FTE
CITY-NEAR Market Basket #990 724 FTE
CITY-NEAR Market Basket #08 380 FTE
CITY-NEAR Thermo Fisher PAI 379 FTE
NAT-TCR UMP Administration 0.6 TCR
NAT-TCR Spanaway WA Truss 0.6 TCR
NAT-TCR KOWA Kentucky, Inc 0.6 TCR
NAT-TCR Columbus 2 0.6 TCR
NAT-SIZE Iamas - Mason City 98 FTE
NAT-SIZE Mnmnk - Mankato Center 98 FTE
NAT-SIZE Nylib - Liberty 98 FTE
NAT-SIZE Txsgo - San Angelo 98 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. 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.