Roofing contractors · Massachusetts

WS Aiken

Chelsea, MA · ~51 workers · 6 years of OSHA Injury Tracking Application data.

C
Average Safety Record
2.4
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

WS Aiken runs at 85% of its industry's injury rate - about level with the typical Roofing contractors workplace, earning a grade C.

WS Aiken: 2.4 TCR = 85% of Roofing contractors BLS 2.8 · 6y Form 300A (see methodology below)

WS Aiken safety composite

WS Aiken scores strongest on total case rate (tcr) (safer than 69% 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).

C

59/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.37 per 100 workers

Safer than 69% of industry peers

DART rate
D 1.14 per 100 workers

Safer than 54% 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

−1.7

2018→2024

WS Aiken injury rate improved

WS Aiken's TCR fell 1.7 from 2.9 in 2018 to 1.1 in 2024. Peak filing year was 2020 at 4.4 TCR. In 2024, DART was 0.48× this establishment's average TCR (severity share of cases).

2018=2.9 · 2019=2.6 · 2020=4.4 · 2021=1.9 · 2023=1.3 · 2024=1.1

OSHA ITA Form 300A scorecard

Establishment book 238160 · Chelsea, MA AT/BELOW-IND · SMALL

Grade C · TCR 2.4 · 85% of ind

  • DART 1.1 DART
  • RANK #9/34
  • PHOTO Heritage One Roofing…
  • BOOK 6y book
  • INJ 7 inj
  • SIZE ~51 FTE

Nearest TCR peer: Heritage One Roofing, Inc. (0.0 TCR gap)

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

WS Aiken in the TCR neighbourhood

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

TCR

What this shows WS Aiken averages 2.4 TCR (85% of the Roofing contractors BLS benchmark).

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

WS Aiken TCR series: 2018=2.9 · 2019=2.6 · 2020=4.4 · 2021=1.9 · 2023=1.3 · 2024=1.1 · BLS 2.8

Where WS Aiken falls in its industry

1,723 Roofing contractors establishments

Safer than 69% of graded establishments in this industry, whose median TCR is 3.7.

More dangerous than peersSafer than peers

Narrower to Massachusetts alone (the establishments it most directly competes with for workers and contracts): ranked #9 safest of 34 Roofing contractors employers in Massachusetts.

WS Aiken (51 employees, TCR 2.4) among 29 same-industry peers, split at the industry median of 44 employees and a TCR of 3.7 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 050100150 0102030 Average employees Total Case Rate WS Aiken
WS Aiken (51 employees, TCR 2.4) among 29 same-industry peers, split at the industry median of 44 employees and a TCR of 3.7

WS Aiken has more employees than the Roofing contractors median and a lower injury rate than the industry's median TCR of 3.7. 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 1.1 1.1 1 0 0
2023 1.3 0.0 1 0 0
2021 1.9 1.9 1 0 0
2020 4.4 4.4 2 0 0
2019 2.6 2.6 1 0 0
2018 2.9 2.9 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238160 · MA · Chelsea

1,723 Roofing contractors employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 52 employers in Chelsea, 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 Heritage One Roofing, Inc. 2.4 TCR
NAICS-TCR Thoroughbred Contractors LLC 2.4 TCR
NAICS-TCR Diamond Roofing Systems, LLP 2.4 TCR
NAICS-TCR Coffey Contracting Company, Inc. 2.4 TCR
STATE-SIZE Benevento Sand & Stone Corp 51 FTE
STATE-SIZE Great Day Boston 51 FTE
STATE-SIZE EJ Paving Company, Inc 51 FTE
STATE-SIZE Lazaro Paving Corp. 51 FTE
CITY-NEAR Market Basket #32 683 FTE
CITY-NEAR State Garden, Inc. 425 FTE
CITY-NEAR Kayem Foods, Inc 308 FTE
CITY-NEAR 240055-BOS-CHELSEA CARRIER ANNEX 284 FTE
NAT-TCR NFI Interactive Logistics LLC-711 THOMLIN MILL ROAD 2.4 TCR
NAT-TCR Crown Electric, Inc. 2.4 TCR
NAT-TCR Hoist Material Handling 2.4 TCR
NAT-TCR Delta Manor 2.4 TCR
NAT-SIZE York Branch 51 FTE
NAT-SIZE Food City, LLC 51 FTE
NAT-SIZE Summerhouse Park Provence 51 FTE
NAT-SIZE Riverside Community Services 51 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, 2021, 2020, 2019, 2018. 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.