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

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co

Oakland, CA · ~25 workers · 7 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.4
Avg TCR
2.9
Industry avg
1
Fatality
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The verdict

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co runs at 49% of its industry's injury rate - far safer than the typical Addition, alteration and renovation general contractors, commercial and institutional building workplace, earning a grade A.

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co: 1.4 TCR = 49% of Addition, alteration and renovation general contractors, commercial and institutional building BLS 2.9 · 7y Form 300A (see methodology below)

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co safety composite

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co scores strongest on dart rate (safer than 73% of same-industry peers) and weakest on fatalities (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).

D

53/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 1.41 per 100 workers

Safer than 67% of industry peers

DART rate
C 0 per 100 workers

Safer than 73% of industry peers

Fatalities
F 1

Safer than 1% 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%).

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co held a steady TCR band

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co's TCR held near 0.0 from 0.0 in 2017 to 0.0 in 2024. Peak filing year was 2018 at 9.9 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2017=0.0 · 2018=9.9 · 2019=0.0 · 2020=0.0 · 2022=0.0 · 2023=0.0 · 2024=0.0

OSHA ITA Form 300A scorecard

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

Grade A · TCR 1.4 · 49% of ind

  • DART 0.0 DART
  • RANK #141/486
  • PHOTO The Law Company, Inc.
  • BOOK 7y book
  • INJ 1 inj
  • SIZE ~25 FTE

Nearest TCR peer: The Law Company, Inc. (0.0 TCR gap)

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

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co in the TCR neighbourhood

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

TCR

What this shows Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co averages 1.4 TCR (49% 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

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co TCR series: 2017=0 · 2018=9.9 · 2019=0 · 2020=0 · 2022=0 · 2023=0 · 2024=0 · BLS 2.9

Where Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co falls in its industry

4,692 Addition, alteration and renov establishments

Safer than 67% 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 #141 safest of 486 Addition, alteration and renov employers in California.

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co (25 employees, TCR 1.4) 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 Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co
Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co (25 employees, TCR 1.4) among 29 same-industry peers, split at the industry median of 55 employees and a TCR of 2.3

Mark Lee And Yong Kay, Inc., D.B.A. Bay Construction Co has fewer 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 0.0 0.0 0 0 0
2020 0.0 0.0 0 0 0
2019 0.0 0.0 0 0 0
2018 9.9 0.0 1 0 1
2017 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

236220 · CA · Oakland

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 · 458 employers in Oakland, 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 The Law Company, Inc. 1.4 TCR
NAICS-TCR AP Southwest, LLC 1.4 TCR
NAICS-TCR H&M Constructors 1.4 TCR
NAICS-TCR Armcorp Construction, Inc. 1.4 TCR
STATE-SIZE Conservation Farms Ranches 25 FTE
STATE-SIZE GM Ag Services, Inc. 25 FTE
STATE-SIZE Farm Shop 25 FTE
STATE-SIZE Dougherty Brothers 25 FTE
CITY-NEAR Oakland Unified School District 4,473 FTE
CITY-NEAR 2032-02120301 4,408 FTE
CITY-NEAR 0206-02620301 3,210 FTE
CITY-NEAR 2032-02620301 2,922 FTE
NAT-TCR Hardtner Medical Center 1.4 TCR
NAT-TCR York Agronomy 1.4 TCR
NAT-TCR 410 Lakeville Road 1.4 TCR
NAT-TCR Ogeechee Steel, Inc. 1.4 TCR
NAT-SIZE Elite Stone & Supply, LLC 25 FTE
NAT-SIZE TW Metals - STP 25 FTE
NAT-SIZE Town of Portland - Public Works Department 25 FTE
NAT-SIZE Town of Simsbury Parks and Recreation 25 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, 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.