Bus operation, school and employee · California

MST - Los Angeles

Name: MST - Los Angeles Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Los Angeles, CA · ~265 workers · 4 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

C
Average Safety Record: 4.3
Avg TCR: 4.5
Industry avg: 0
Fatalities

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The verdict

MST - Los Angeles runs at 96% of its industry's injury rate - about level with the typical Bus operation, school and employee workplace, earning a grade C.

MST - Los Angeles: 4.3 TCR = 96% of Bus operation, school and employee BLS 4.5 · 4y Form 300A (see methodology below)

MST - Los Angeles safety composite

MST - Los Angeles scores strongest on total case rate (tcr) (safer than 50% of same-industry peers) and weakest on dart rate (safer than 36%), 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).

45/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): D 4.3 per 100 workers

Safer than 50% of industry peers
DART rate: D 3.45 per 100 workers

Safer than 36% of industry peers
Fatalities: D 0

Safer than 50% 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

MST - Los Angeles: 4.9 → 5.5 TCR

Peak year 2021 @ 5.5 TCR · DART/TCR 0.8× in 2021

MST - Los Angeles's TCR rose 0.6 from 4.9 in 2017 to 5.5 in 2021. In 2021, DART was 0.8× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 485410 · Los Angeles, CA AT/BELOW-IND · MID

Grade C · TCR 4.3 · 96% of ind

DART 3.5 DART
RANK #37/119
PHOTO 403012-Merrimack | N…
BOOK 4y book
INJ 36 inj
SIZE ~265 FTE

Nearest TCR peer: 403012-Merrimack | NH | GOF-300 (0.0 TCR gap)

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This site

4.3
403012-Merrima

4.3
2662-4002

4.3
4117 TRANSIT R

4.3
2662-6702

4.3

What this shows MST - Los Angeles averages 4.3 TCR (96% of the Bus operation, school and employee BLS benchmark).

MST - Los Angeles TCR series: 2017=4.9 · 2018=4.3 · 2019=2.4 · 2021=5.5 · BLS 4.5

Where MST - Los Angeles falls in its industry

1,574 Bus operation, school and empl establishments

Safer than 50% of graded establishments in this industry, whose median TCR is 4.3.

Grade C

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #37 safest of 119 Bus operation, school and empl employers in California.

MST - Los Angeles (265 employees, TCR 4.3) among 29 same-industry peers, split at the industry median of 74 employees and a TCR of 4.3

MST - Los Angeles has more employees than the Bus operation, school and employee median and a lower injury rate than the industry's median TCR of 4.3. 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
2021	5.5	3.5	8	0
2019	2.4	2.4	8	0
2018	4.3	1.9	8	1
2017	4.9	3.3	12	0

OSHA ITA peer cross-reference

Establishment peer ledger

485410 · CA · Los Angeles

1,574 Bus operation, school and employee employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 2,064 employers in Los Angeles, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	403012-Merrimack \| NH \| GOF-300	MERRIMACK, NH	4.3 TCR
NAICS-TCR	2662-4002	NEW BERLIN, WI	4.3 TCR
NAICS-TCR	4117 TRANSIT REGION-DETROIT WEST - TRINITY	DETROIT, MI	4.3 TCR
NAICS-TCR	2662-6702	WATTSBURG, PA	4.3 TCR
STATE-SIZE	Winters	WINTERS	265 FTE
STATE-SIZE	JC Farm Services, Inc.	ORLAND	265 FTE
STATE-SIZE	CAL AG FARM LABOR, INC.	WOODLAKE	265 FTE
STATE-SIZE	Grijalva Contractors	BAKERSFIELD	265 FTE
CITY-NEAR	Live Nation Worldwide, Inc.	Los Angeles	50,317 FTE
CITY-NEAR	UC Los Angeles	Los Angeles	40,333 FTE
CITY-NEAR	LADWP	Los Angeles	11,717 FTE
CITY-NEAR	Los Angeles Department of Water and Power	Los Angeles	10,346 FTE
NAT-TCR	Perrin, Inc.	Comstock Park, MI	4.3 TCR
NAT-TCR	Mira-Csws-Power Block Facility/Jet Turbine Facility	Hartford, CT	4.3 TCR
NAT-TCR	Honeywell International, Inc.	Claymont, DE	4.3 TCR
NAT-TCR	McNeely Pest Control	Winston-Salem, NC	4.3 TCR
NAT-SIZE	Hinckley Ofc/Whse	Hinckley, OH	265 FTE
NAT-SIZE	Werner Electric Supply - Appleton	Appleton, WI	265 FTE
NAT-SIZE	43511a - Dfw North Zone	Carrollton, TX	265 FTE
NAT-SIZE	Netcare Corporation	Columbus, OH	265 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: 2021, 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.