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

H. C. Olsen Construction Co., Inc.

Monrovia, CA · ~81 workers · 8 years of OSHA Injury Tracking Application data.

B
Good Safety Record
1.5
Avg TCR
2.9
Industry avg
0
Fatalities
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The verdict

H. C. Olsen Construction Co., Inc. runs at 53% of its industry's injury rate - safer than the typical Addition, alteration and renovation general contractors, commercial and institutional building workplace, earning a grade B.

H. C. Olsen Construction Co., Inc.: 1.5 TCR = 53% of Addition, alteration and renovation general contractors, commercial and institutional building BLS 2.9 · 8y Form 300A (see methodology below)

H. C. Olsen Construction Co., Inc. safety composite

H. C. Olsen Construction Co., Inc. scores strongest on dart rate (safer than 73% 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

64/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 1.53 per 100 workers

Safer than 65% of industry peers

DART rate
C 0 per 100 workers

Safer than 73% 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

−3.2

2017→2024

H. C. Olsen Construction Co., Inc. injury rate improved

H. C. Olsen Construction Co., Inc.'s TCR fell 3.2 from 3.2 in 2017 to 0.0 in 2024. Peak filing year was 2017 at 3.2 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2017=3.2 · 2018=1.1 · 2019=1.3 · 2020=1.8 · 2021=3.2 · 2022=1.6 · 2023=0.0 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 236220 · Monrovia, CA AT/BELOW-IND · SMALL

Grade B · TCR 1.5 · 53% of ind

  • DART 0.0 DART
  • RANK #163/486
  • PHOTO JBI Office
  • BOOK 8y book
  • INJ 7 inj
  • SIZE ~81 FTE

Nearest TCR peer: JBI Office (0.0 TCR gap)

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

H. C. Olsen Construction Co., Inc. in the TCR neighbourhood

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

TCR

What this shows H. C. Olsen Construction Co., Inc. averages 1.5 TCR (53% 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

H. C. Olsen Construction Co., Inc. TCR series: 2017=3.2 · 2018=1.1 · 2019=1.3 · 2020=1.8 · 2021=3.2 · 2022=1.6 · 2023=0 · 2024=0 · BLS 2.9

Where H. C. Olsen Construction Co., Inc. falls in its industry

4,692 Addition, alteration and renov establishments

Safer than 65% of graded establishments in this industry, whose median TCR is 2.3.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #163 safest of 486 Addition, alteration and renov employers in California.

H. C. Olsen Construction Co., Inc. (81 employees, TCR 1.5) 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 H. C. Olsen Construction Co., Inc.
H. C. Olsen Construction Co., Inc. (81 employees, TCR 1.5) among 29 same-industry peers, split at the industry median of 55 employees and a TCR of 2.3

H. C. Olsen Construction Co., Inc. has more employees than the Addition, alteration and renovation gene median and a lower 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
2024 0.0 0.0 0 0 0
2023 0.0 0.0 0 0 0
2022 1.6 1.6 1 0 0
2021 3.2 1.6 1 1 0
2020 1.8 1.8 0 1 0
2019 1.3 1.3 1 0 0
2018 1.1 1.1 1 0 0
2017 3.2 2.2 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

236220 · CA · Monrovia

4,692 Addition, alteration and renovation general contractors, commercial and institutional building employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 68 employers in Monrovia, CA · 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 JBI Office 1.5 TCR
NAICS-TCR BBL Carlton, LLC 1.5 TCR
NAICS-TCR Century Construction Company, Inc. 1.5 TCR
NAICS-TCR Votze Butler & Associates, Inc. 1.5 TCR
STATE-SIZE Allied Potato Inc. 81 FTE
STATE-SIZE STS Ranch LLC 81 FTE
STATE-SIZE C. R CRAIN AND SONS, INC 81 FTE
STATE-SIZE Miramar 81 FTE
CITY-NEAR California Department of Transportation Facility 593 2,621 FTE
CITY-NEAR Monrovia 02 Oral Care 695 FTE
CITY-NEAR WorleyParsons Group Inc - Monrovia 530 FTE
CITY-NEAR Original Tommy's 500 FTE
NAT-TCR Reserve FTL, dba Reserve Iron Ohio 1.5 TCR
NAT-TCR Minneapolis Clinic of Neurology-ED 1.5 TCR
NAT-TCR Industrial Metal Products 1.5 TCR
NAT-TCR USG Interiors Greenville 1.5 TCR
NAT-SIZE S07044 - Phoenix Hauling - White Tank 81 FTE
NAT-SIZE Monroe-Gregg School District 81 FTE
NAT-SIZE S06715 - Cascade Recycling Center 81 FTE
NAT-SIZE S04401 - Erie Hauling 81 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, 2021, 2020, 2019, 2018, 2017. 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.