The Proposition 65 Timeline:  What You Need to Know, & When

Don’t Wait to Be Hit With a Lawsuit — Get Ahead of Proposition 65. Talk to one of our sustainability experts today.

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Why You Need to Act Now

Did You Know?

Proposition 65 enforcement collected $102 million in penalties and settlements  in 2024 alone.¹

Proposition 65  Scoping Guide

Does your company manufacture, import or sell products in the State of California? If so, you may have labeling requirements under Proposition 65.

Download the Guide

Proposition 65 Timeline

Origin

2013

2015–2016

2018

2024

2025

2028

November 4, 1986

California Proposition 65 approved by voters

January 1, 1987

Law takes effect

February 27, 1987

First chemical list published

1988-1999

Early Implementation & Enforcement: Courts & regulators define real-world warning practices — Unclear warnings trigger legal action

Find out if you’re in scope

Download the Scoping Guide

May 7, 2013

Governor Brown’s Reform Proposal: Aims to curb frivolous lawsuits and improve warning clarity

Protect against
costly mistakes

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November 27, 2015

Draft changes to warning rules released

August 30, 2016

New warning regulations adopted

Get the Proposition 65 Handbook

August 30, 2018

Updated “clear and reasonable” warnings required for all products sold in California

Stay ahead of regulatory updates

Start Product Tour

2024

Enforcement Totals Soar: 303 judgments ($76.3 million) and 1,071 settlements ($26.6 million)

Don’t become
 a statistic

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January 1, 2025

Short-form label changes take effect

Businesses must align short-form wording and layout with long-form requirements

Proactively meeting your new requirements?

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January 1, 2028 (Futur Outlook)

Mandatory specific chemical disclosure

Short-form labels for products manufactured on or after this date must name at least one listed substance and its cancer or reproductive-harm risk

Fix labeling gaps before they cost you

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The Stakes of Non-Compliance Are High

Lawsuits related to California’s Proposition 65 can lead to fines of up to $2,500 per day, per violation, plus attorney’s fees and reputational damage. On top of this, you could be targeted by private enforcers (“bounty hunters”), who are incentivized to bring lawsuits when they suspect non-compliance.

Assent’s Proposition 65 Solution

Built for complex manufacturing supply chains, Assent’s Proposition 65 software compliance by delivering standardized, validated, and actionable data — all in one place. From AI-enabled workflows to expert guidance, we help you reduce risk, save time, and protect your brand.