Addition, alteration and renovation general contractors, commercial and institutional building · Maryland

Four Tribes

Gaithersburg, MD · ~36 workers · 4 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
4.5
Avg TCR
2.9
Industry avg
0
Fatalities
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The verdict

Four Tribes runs at 155% of its industry's injury rate - more dangerous than the typical Addition, alteration and renovation general contractors, commercial and institutional building workplace, earning a grade D.

Four Tribes: 4.5 TCR = 155% of Addition, alteration and renovation general contractors, commercial and institutional building BLS 2.9 · 4y Form 300A (see methodology below)

Four Tribes safety composite

Four Tribes scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 1%), 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).

F

23/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 4.5 per 100 workers

Safer than 25% of industry peers

DART rate
F 12.37 per 100 workers

Safer than 1% 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

Four Tribes: 3.6 → 12.4 TCR

Peak year 2019 @ 12.4 TCR · DART/TCR 2.75× in 2019

Four Tribes's TCR rose 8.7 from 3.6 in 2016 to 12.4 in 2019. In 2019, DART was 2.75× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 236220 · Gaithersburg, MD ABOVE-IND · SMALL

Grade D · TCR 4.5 · 155% of ind

  • DART 12.4 DART
  • RANK #86/99
  • PHOTO 5302 - T02COP-CCI-Pu…
  • BOOK 4y book
  • INJ 8 inj
  • SIZE ~36 FTE

Nearest TCR peer: 5302 - T02COP-CCI-Pueblo CO (0.0 TCR gap)

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Four Tribes in the TCR neighbourhood

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

TCR

What this shows Four Tribes averages 4.5 TCR (155% of the Addition, alteration and renovation general contractors, commercial and institutional building BLS benchmark).

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

Four Tribes TCR series: 2016=3.6 · 2017=2 · 2018=0 · 2019=12.4 · BLS 2.9

Where Four Tribes falls in its industry

4,692 Addition, alteration and renov establishments

Safer than 25% of graded establishments in this industry, whose median TCR is 2.3.

More dangerous than peersSafer than peers

Narrower to Maryland alone (the establishments it most directly competes with for workers and contracts): ranked #86 safest of 99 Addition, alteration and renov employers in Maryland.

Four Tribes (36 employees, TCR 4.5) among 29 same-industry peers, split at the industry median of 55 employees and a TCR of 2.3 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 0100200300400500 02468 Average employees Total Case Rate Four Tribes
Four Tribes (36 employees, TCR 4.5) among 29 same-industry peers, split at the industry median of 55 employees and a TCR of 2.3

Four Tribes has fewer employees than the Addition, alteration and renovation gene median and a higher injury rate than the industry's median TCR of 2.3. 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
2019 12.4 12.4 6 0 0
2018 0.0 0.0 0 0 0
2017 2.0 2.0 1 0 0
2016 3.6 3.6 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

236220 · MD · Gaithersburg

4,692 Addition, alteration and renovation general contractors, commercial and institutional building employers nationwide with a credible TCR · 7,213 rated employers in Maryland with headcount on file · 202 employers in Gaithersburg, MD · 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 5302 - T02COP-CCI-Pueblo CO 4.5 TCR
NAICS-TCR Satori, Inc. 4.5 TCR
NAICS-TCR Procon LLC 4.5 TCR
NAICS-TCR TI Construction Inc 4.5 TCR
STATE-SIZE ForwardGro, LLC 36 FTE
STATE-SIZE R.W. Sauder Inc. 36 FTE
STATE-SIZE Gibraltar Construction Co., Inc. 36 FTE
STATE-SIZE BOB BREEDING GENERAL CONTRACTORS, LLC 36 FTE
CITY-NEAR AstraZeneca Gaithersburg Campus 4,117 FTE
CITY-NEAR MDGAI - GAITHERSBURG HUB 794 FTE
CITY-NEAR Adventist Healthcare Support Center to SGMC 764 FTE
CITY-NEAR MDGAI - GAITHERSBURG-PACKAGE CENTER 759 FTE
NAT-TCR Forrest Products 4.5 TCR
NAT-TCR RCX Colorado 4.5 TCR
NAT-TCR 077 ABC Supply Co., Inc 4.5 TCR
NAT-TCR Darien Lake Holdings, LLC 4.5 TCR
NAT-SIZE Department of Energy - Forrestal 36 FTE
NAT-SIZE Kuehne + Nagel Inc. (SKB-6440) 36 FTE
NAT-SIZE Ridge Family Center For Learning 36 FTE
NAT-SIZE Bpf Enterprises Inc 36 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: 2019, 2018, 2017, 2016. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.