Air system balancing and testing · Massachusetts

Main Office-Main

Rockland, MA · ~66 workers · 3 years of OSHA Injury Tracking Application data.

B
Good Safety Record
2.1
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Main Office-Main runs at 76% of its industry's injury rate - safer than the typical Air system balancing and testing workplace, earning a grade B.

Main Office-Main: 2.1 TCR = 76% of Air system balancing and testing BLS 2.8 · 3y Form 300A (see methodology below)

Main Office-Main safety composite

Main Office-Main scores strongest on total case rate (tcr) (safer than 67% of same-industry peers) and weakest on dart rate (safer than 30%), 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).

D

50/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.12 per 100 workers

Safer than 67% of industry peers

DART rate
F 2.96 per 100 workers

Safer than 30% 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%).

Rising injury rate

Main Office-Main: 1.7 → 3.0 TCR

Peak year 2024 @ 3.0 TCR · DART/TCR 1.4× in 2024

Main Office-Main's TCR rose 1.2 from 1.7 in 2022 to 3.0 in 2024. In 2024, DART was 1.4× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Rockland, MA AT/BELOW-IND · SMALL

Grade B · TCR 2.1 · 76% of ind

  • DART 3.0 DART
  • RANK #41/140
  • PHOTO Aabco Sheet Metal Co
  • BOOK 3y book
  • INJ 4 inj
  • SIZE ~66 FTE

Nearest TCR peer: Aabco Sheet Metal Co (0.0 TCR gap)

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

Main Office-Main in the TCR neighbourhood

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

TCR

What this shows Main Office-Main averages 2.1 TCR (76% of the Air system balancing and testing BLS benchmark).

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

Main Office-Main TCR series: 2022=1.7 · 2023=1.7 · 2024=3 · BLS 2.8

Where Main Office-Main falls in its industry

5,793 Air system balancing and testi establishments

Safer than 67% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Massachusetts alone (the establishments it most directly competes with for workers and contracts): ranked #41 safest of 140 Air system balancing and testi employers in Massachusetts.

Main Office-Main (66 employees, TCR 2.1) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3 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 050100150200250 05101520 Average employees Total Case Rate Main Office-Main
Main Office-Main (66 employees, TCR 2.1) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Main Office-Main has more employees than the Air system balancing and testing median and a lower injury rate than the industry's median TCR of 3.3. 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 3.0 3.0 2 0 0
2023 1.7 1.7 1 0 0
2022 1.7 0.0 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · MA · Rockland

5,793 Air system balancing and testing employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 30 employers in Rockland, 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 Aabco Sheet Metal Co 2.1 TCR
NAICS-TCR Emjay Engineering & Construction CO. Inc. 2.1 TCR
NAICS-TCR Sideburn Support Center 2.1 TCR
NAICS-TCR Comfort Systems USA Syracuse 2.1 TCR
STATE-SIZE A&M Roofing Services, LLC 66 FTE
STATE-SIZE New England electrical contracting corp 66 FTE
STATE-SIZE BT Auburndale 66 FTE
STATE-SIZE Grasseschi Plumbing and Heating Inc. 66 FTE
CITY-NEAR EMD Serono, Inc. Rockland 781 FTE
CITY-NEAR South Shore Health Home Care Division 234 FTE
CITY-NEAR Rockland 196 FTE
CITY-NEAR Heritage Restoration 168 FTE
NAT-TCR Bedoukian Research Inc 2.1 TCR
NAT-TCR 143018-North Hollywood | CA | SAN-545 2.1 TCR
NAT-TCR Keesen Landscape Management 2.1 TCR
NAT-TCR Arauco North America - Biscoe 2.1 TCR
NAT-SIZE Allied Logistics Inc 66 FTE
NAT-SIZE Sumter Coatings 66 FTE
NAT-SIZE Galaxy Mission Grove LLC 66 FTE
NAT-SIZE Cattlemens 03 66 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.