Full Breakdown
California Engineered-Stone Countertop Workers Face a Silicosis Epidemic
8/14/2026, 11:44:42 AM
The Surge in Fatal Lung Disease
A surveillance report released on August 12 by the California Department of Public Health documented 592 confirmed cases of silicosis among workers who fabricate engineered-stone (quartz) countertops between January 2019 and June 2026. The disease has claimed 31 lives and led to 65 lung transplants. The median age at diagnosis is 46, and the median age at death is 52. Latino men account for roughly 99 % of cases, with about half of the diagnoses reported in Los Angeles County, where dozens of fabrication shops cluster in the San Fernando Valley.
Background and Regulatory Timeline
- 2019 – First silicosis case identified in a countertop fabricator.
- 2022-2023 – Public awareness grew; a 2024 safety-protocol bill was placed on hold.
- 2025 – Senate Bill 20 made silicosis a mandatory reportable condition, required respirators and water-suppression dust controls, and closed a loophole on protective-step claims.
- 2023-2025 – Cal/OSHA issued an emergency regulatory framework for silica products in December 2023 and made the rule permanent in early 2025.
- May 21 2026 – The state Occupational Safety and Health Standards Board voted unanimously to direct Cal/OSHA to begin emergency rulemaking that would prohibit fabrication and installation of engineered stone containing more than 1 % crystalline silica.
- June 3 2026 – The House Judiciary Committee passed H.R. 5437, the *Protection of Lawful Commerce in Stone Slab Products Act*, which would retroactively dismiss roughly 500 pending lawsuits filed by workers against stone-slab manufacturers.
Data and Workplace Conditions
Cal/OSHA inspections have cited 94 % of the shops examined for silica-dust violations, and 20 % received emergency shutdown orders. The inspections covered about 140 shops, roughly 10 % of the estimated 1,342 fabrication operations statewide. Workers often lack health insurance and occupational-health monitoring; co-occurring autoimmune disease and tuberculosis worsen outcomes.
Official Statements & Responses
State officials say the emergency rulemaking aims to eliminate the primary source of exposure by banning high-silica engineered stone fabrication. The unanimous board vote reflects consensus that existing controls are insufficient. Federal testimony noted that after Australia’s 2024 ban, manufacturers introduced safer, zero-silica alternatives for that market.
Criticism & Opposition
The Western Occupational & Environmental Medical Association petitioned in December for stricter measures, arguing that compliance rates are low and that California could follow Australia’s nationwide prohibition. The association contends that without a ban, workers will continue to face “earlier deaths and severe disability.”
Verbatim Quote
- “It’s become clear that this product engineered stone countertops … cannot be manufactured safely and economically,” — David Michaels, OSHA assistant secretary
What’s Next
The emergency rulemaking drafted after the May 21 board vote must be reviewed by stakeholders and formally approved before it can take effect, a process that could take several months. Ongoing surveillance and the pending regulatory ban shape the next phase of the state’s response to an occupational epidemic that officials estimate remains undercounted.
