Mattresses (i.e., box spring, innerspring, noninnerspring) manufacturing · California
Diamond Mattress Company
Compton, CA · ~170 workers · 2 years of OSHA Injury Tracking Application data.
- F
- Failing Safety Record
- 16.6
- Avg TCR
- 3.3
- Industry avg
- 0
- Fatalities
The verdict
Diamond Mattress Company runs at 503% of its industry's injury rate - far more dangerous than the typical Mattresses (i.e., box spring, innerspring, noninnerspring) manufacturing workplace, earning a grade F.
Diamond Mattress Company: 16.6 TCR = 503% of Mattresses (i.e., box spring, innerspring, noninnerspring) manufacturing BLS 3.3 · 2y Form 300A (see methodology below)
Diamond Mattress Company safety composite
Diamond Mattress Company scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 2%), 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).
22/100
Percentile-weighted across 3 of 3 measures
- Total Case Rate (TCR)
- F 16.61 per 100 workers
Safer than 2% of industry peers
- DART rate
- F 4.82 per 100 workers
Safer than 24% 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
Diamond Mattress Company: 9.1 → 24.1 TCR
Peak year 2024 @ 24.1 TCR · DART/TCR 0.29× in 2024
Diamond Mattress Company's TCR rose 15.0 from 9.1 in 2017 to 24.1 in 2024. In 2024, DART was 0.29× this establishment's average TCR (severity share of cases).
OSHA ITA Form 300A scorecard
Establishment book 337910 · Compton, CA ABOVE-IND · MID
Grade F · TCR 16.6 · 503% of ind
- DART 4.8 DART
- RANK #9/9
- PHOTO Jeffco Fibres Inc.
- BOOK 2y book
- INJ 21 inj
- SIZE ~170 FTE
Nearest TCR peer: Jeffco Fibres Inc. (0.1 TCR gap)
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Diamond Mattress Company in the TCR neighbourhood
Average Total Case Rate among this establishment and nearest same-industry peers
- Upper Midwest
Upper Midwest Sleep
18.3 TCR
- This site
Diamond Mattress Company
16.6 TCR
- Jeffco Fibres
Jeffco Fibres Inc.
16.5 TCR
- Puerto Rico
Puerto Rico
15.3 TCR
- OMF St. Paul,
OMF St. Paul, Inc.
15.3 TCR
What this shows Diamond Mattress Company averages 16.6 TCR (503% of the Mattresses (i.e., box spring, innerspring, noninnerspring) manufacturing BLS benchmark).
Diamond Mattress Company TCR series: 2017=9.1 · 2024=24.1 · BLS 3.3
Where Diamond Mattress Company falls in its industry
160 Mattresses (i.e., box spring, establishmentsSafer than 2% of graded establishments in this industry, whose median TCR is 3.8.
Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #9 safest of 9 Mattresses (i.e., box spring, employers in California.
Diamond Mattress Company has more employees than the Mattresses (i.e., box spring, innersprin median and a higher injury rate than the industry's median TCR of 3.8. 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 | 24.1 | 4.8 | 5 | 0 | 0 |
| 2017 | 9.1 | 9.1 | 16 | 0 | 0 |
OSHA ITA peer cross-reference
Establishment peer ledger
337910 · CA · Compton
160 Mattresses (i.e., box spring, innerspring, noninnerspring) manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 143 employers in Compton, 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 | Jeffco Fibres Inc. | 16.5 TCR |
| NAICS-TCR | Puerto Rico | 15.3 TCR |
| NAICS-TCR | OMF St. Paul, Inc. | 15.3 TCR |
| NAICS-TCR | Upper Midwest Sleep | 18.3 TCR |
| STATE-SIZE | MERRILL FARMS LLC | 170 FTE |
| STATE-SIZE | RICHMOND SERVICE CENTER | 170 FTE |
| STATE-SIZE | Shaw & Sons, Inc. | 170 FTE |
| STATE-SIZE | DiCarlo Concrete, Inc. | 170 FTE |
| CITY-NEAR | Ono-017 | 910 FTE |
| CITY-NEAR | 430-DC006 | 793 FTE |
| CITY-NEAR | 430-DC001 | 789 FTE |
| CITY-NEAR | The People Concern - SOLAR | 448 FTE |
| NAT-TCR | Idaho Falls #042 | 16.6 TCR |
| NAT-TCR | Alflo - Florence Center | 16.6 TCR |
| NAT-TCR | 6400-SWY-0005-0005-02910 | 16.6 TCR |
| NAT-TCR | Moran Nursing and Rehabilitation Center | 16.6 TCR |
| NAT-SIZE | Bob's Barricades, Inc. | 170 FTE |
| NAT-SIZE | Barber Brothers Contracting Co | 170 FTE |
| NAT-SIZE | BrandSafway LLC - ExxonMobil Chemical - Baytown | 170 FTE |
| NAT-SIZE | First Call Environmental | 170 FTE |
Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →
Read our methodology - how this data is sourced, computed, and verified.