Mechanical contractors · Illinois

Main Office

Carol Stream, IL · ~52 workers · 5 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

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

Main Office: 2.4 TCR = 85% of Mechanical contractors BLS 2.8 · 5y Form 300A (see methodology below)

Main Office safety composite

Main Office scores strongest on dart rate (safer than 80% 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

66/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.39 per 100 workers

Safer than 62% of industry peers

DART rate
B 0 per 100 workers

Safer than 80% 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%).

Main Office held a steady TCR band

Main Office's TCR held near 0.0 from 0.0 in 2016 to 0.0 in 2020. Peak filing year was 2019 at 8.1 TCR. In 2020, DART was 0× this establishment's average TCR (severity share of cases).

2016=0.0 · 2017=0.0 · 2018=3.8 · 2019=8.1 · 2020=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Carol Stream, IL AT/BELOW-IND · SMALL

Grade C · TCR 2.4 · 85% of ind

  • DART 0.0 DART
  • RANK #124/230
  • PHOTO Mechanical Design Sy…
  • BOOK 5y book
  • INJ 7 inj
  • SIZE ~52 FTE

Nearest TCR peer: Mechanical Design Systems, Inc. (0.0 TCR gap)

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

Main Office in the TCR neighbourhood

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

TCR

What this shows Main Office averages 2.4 TCR (85% of the Mechanical contractors BLS benchmark).

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

Main Office TCR series: 2016=0 · 2017=0 · 2018=3.8 · 2019=8.1 · 2020=0 · BLS 2.8

Where Main Office falls in its industry

5,793 Mechanical contractors establishments

Safer than 62% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Illinois alone (the establishments it most directly competes with for workers and contracts): ranked #124 safest of 230 Mechanical contractors employers in Illinois.

Main Office (52 employees, TCR 2.4) 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 Office (52 employees, TCR 2.4) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Main Office has fewer employees than the Mechanical contractors 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
2020 0.0 0.0 0 0 0
2019 8.1 3.3 5 0 0
2018 3.8 1.9 2 0 0
2017 0.0 0.0 0 0 0
2016 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · IL · Carol Stream

5,793 Mechanical contractors employers nationwide with a credible TCR · 22,804 rated employers in Illinois with headcount on file · 170 employers in Carol Stream, IL · 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 Mechanical Design Systems, Inc. 2.4 TCR
NAICS-TCR On Point HVAC Corp 2.4 TCR
NAICS-TCR Walker J Walker 2.4 TCR
NAICS-TCR Valley Fire Protection Systems, LLC 2.4 TCR
STATE-SIZE Curative Health Cultivation LLC 52 FTE
STATE-SIZE 2502-Ashton, IL (Monsanto Co.) 52 FTE
STATE-SIZE Sauget 52 FTE
STATE-SIZE 1240-Monmouth, IL (Monsanto Co.) 52 FTE
CITY-NEAR Northwestern Medicine Regional Medical Group 2,151 FTE
CITY-NEAR American Litho, Inc. 1,657 FTE
CITY-NEAR 161275-CAROL STREAM IL P&DC 960 FTE
CITY-NEAR Hearthside Foods - Carol Stream 853 FTE
NAT-TCR Cargill Agricultural Supply Chain - Fayetteville 2.4 TCR
NAT-TCR CCGA1000 2.4 TCR
NAT-TCR SKF Lubrication Systems/Cooper Split Roller Bearing 2.4 TCR
NAT-TCR CA082 2.4 TCR
NAT-SIZE Canton ORR Protection 52 FTE
NAT-SIZE ReCon Houston Plant 52 FTE
NAT-SIZE Grand Rapids Hospice 52 FTE
NAT-SIZE North East Specialty Corp. 52 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: 2020, 2019, 2018, 2017, 2016. 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.