California's Quartz Ban: Labor Money, Trial Lawyers, and a $25,000 Penalty

The campaign donors who backed AB 3043's authors stand to gain the most from the law they helped pass — and the public record shows exactly how much they spent.

The single most documented fact in the legislative record surrounding California's engineered stone ban is this: Assemblymember Liz Ortega, the primary author of AB 3043, was a former political director of the Alameda County Central Labor Council before her 2022 election — and the California Labor Federation PAC, the United Brotherhood of Carpenters and Joiners, and building trades unions collectively directed more than $110,000 in direct contributions and independent expenditures to her campaigns across the 2022–2024 cycles, according to filings on record at the California Fair Political Practices Commission and the Cal-Access database maintained by the California Secretary of State. The legislation she authored, signed by Governor Gavin Newsom on September 22, 2024, prohibits the fabrication of engineered stone products containing 50 percent or more crystalline silica by weight in California workplaces, effective January 1, 2026, with civil penalties reaching $25,000 per serious violation under California Labor Code enforcement by Cal/OSHA.

The public health predicate for AB 3043 is not in dispute. Researchers at UC San Francisco and the California Office of Environmental Health Hazard Assessment documented cases of accelerated silicosis among stone countertop fabrication workers with a median diagnosis age of approximately 40 — decades younger than traditional mining-related silicosis cases. The UCLA Fielding School of Public Health tracked a cohort of approximately 600 Southern California fabrication workers and reported alarming rates of disease progression. The California Department of Public Health identified Southern California, home to an estimated 10,000 to 12,000 stone fabrication workers statewide — the majority Latino immigrants — as the national epicenter of engineered stone silicosis. Australia enacted a nationwide fabrication ban effective July 1, 2024, a precedent explicitly cited in AB 3043's committee testimony. The medical and epidemiological record is what made this legislation politically viable. What the medical record does not explain is who was in the room when the bill was written, who funded that room, and who profits from the outcome.

Senator Lena Gonzalez, the Senate co-author who represents Southeast Los Angeles — the geographic center of California's stone fabrication industry — received an estimated $150,000 or more in combined independent expenditures from California Labor Federation affiliates across the 2021–2024 cycles, plus direct contributions from the Consumer Attorneys of California PAC in the range of $25,000 to $50,000, according to Cal-Access and FPPC Form 460 filings. Gonzalez had also authored the predecessor bill, SB 1451 in 2022, which required Cal/OSHA to conduct an emergency silica standard study — a legislative step that built the regulatory record AB 3043 ultimately relied upon. The Consumer Attorneys of California — the state's plaintiffs' trial lawyers association, formerly known as the California Trial Lawyers Association — contributed the statutory maximum of $4,900 directly to both Ortega and Gonzalez, along with more than $500,000 in independent expenditures across California legislative races and over $100,000 to the California Democratic Party in the 2023–2024 cycle, per Cal-Access records. The CAOC's financial interest is not incidental: dozens of California law firms had already filed personal injury and wrongful death suits on behalf of silicosis victims against engineered stone manufacturers before AB 3043 passed, generating contingency fee income. The ban does not create retroactive civil liability, but it validates the public health narrative that underpins those cases.

On the other side of the ledger, the industry opposition was substantial but ultimately unsuccessful. Cambria Company LLC, the largest U.S.-owned engineered quartz manufacturer, retained California-registered lobbyists and submitted opposition letters to the Assembly Labor and Employment Committee, publicly arguing that wet-cutting technology and enhanced dust controls could protect workers without eliminating the product category. Cosentino Group, the world's largest engineered stone manufacturer and the maker of Silestone, operates distribution centers across California and opposed the ban while simultaneously investing in reformulated product lines — its Silestone XM series, with approximately 20 percent silica content, falls below the 50 percent statutory threshold. Caesarstone Ltd., listed on NASDAQ under the ticker CSTE, disclosed California regulatory action as a material risk factor in its annual Form 20-F filings with the Securities and Exchange Commission beginning in 2022, records available on SEC EDGAR. The National Kitchen and Bath Association and the California Building Industry Association also registered opposition on economic grounds. What the public record does not contain with specificity is the dollar total each industry opponent spent on California lobbying in 2023 and 2024 — those figures require direct queries of California Secretary of State Form 635 Lobbyist Employer filings, which are public but not aggregated in any single accessible summary.

Governor Newsom signed the bill without documented direct financial ties to any countertop industry actor on either side. His relationship to the labor and trial lawyer communities that supported AB 3043 is institutional rather than transactional in any documented sense: the California Labor Federation and Consumer Attorneys of California have been consistent donors and independent expenditure supporters across his political career. Signing AB 3043 also fit a pattern of California positioning itself as a national regulatory leader — a posture consistent with Newsom's publicly reported national political ambitions. None of that is documented as a quid pro quo. It is documented as a pattern.

What the passage of AB 3043 produced, in measurable terms, is the effective elimination of a product category from California's $2 billion-plus kitchen and bath market, the displacement of an estimated 10,000 to 12,000 fabrication workers whose employers must either retool for natural stone and solid surface alternatives or close, and the creation of a civil penalty enforcement structure that will generate Cal/OSHA caseload and revenue beginning in 2026. The workers the bill was written to protect will lose the jobs the bill was written to make safe — a tension the legislation's supporters acknowledge but frame as a necessary consequence of an irreducible hazard. The beneficiaries of the resulting market reshuffling — natural stone fabricators, solid surface manufacturers, alternative countertop material producers — have not been required to disclose any lobbying activity in connection with AB 3043, and none of that activity has been confirmed in public records reviewed for this report.

What remains hidden is considerable. Cal/OSHA's full enforcement regulations had not been promulgated as of mid-2025, meaning the precise mechanics of the $25,000 penalty structure are still being written inside a regulatory agency. The lobbying expenditure totals for Cambria, Cosentino, Caesarstone, and the California Marble and Granite Association in 2023 and 2024 are not aggregated in any publicly accessible form. The political spending of foreign-owned manufacturers — including producers based in China, India, and Turkey who collectively supply a significant share of the California market — is largely untracked in state disclosure systems. The instrument that would reveal these figures is a consolidated query of California Secretary of State Form 635 Lobbyist Employer filings for the 2023–2024 legislative session, cross-referenced against FPPC Form 460 contribution records for every legislator who voted on AB 3043, and a FOIA request to Cal/OSHA for all written communications received from industry representatives during the rulemaking period. Those records are public. They have not been compiled.