Bayer/Monsanto's Roundup weedkiller has been at the center of one of the largest mass tort proceedings in U.S. history. The active ingredient -- glyphosate -- has been linked to non-Hodgkin's lymphoma and other blood cancers in thousands of plaintiffs. California residents exposed to Roundup who were later diagnosed with a qualifying cancer may have a claim under MDL 2741 (In re: Roundup Products Liability Litigation), consolidated in the Northern District of California.
This page covers California's filing window, who qualifies, how to document your exposure, California-specific procedural steps, and what publicly reported settlement ranges look like.
This is not legal advice. Talk to a licensed attorney in your state before making any legal decisions about your situation.
Last updated: June 2026. MDL 2741 status: Ongoing in N.D. Cal. Post-global-settlement opt-out claims and new plaintiff cases remain active.
California's Filing Window for Roundup Claims
California applies a two-year statute of limitations for personal injury and toxic tort claims under California Code of Civil Procedure (CCP) § 335.1. For Roundup claims, the discovery rule significantly shapes when that clock begins.
Discovery rule: California courts hold that the limitations period does not begin until you discovered -- or reasonably should have discovered -- both your injury and a suspected cause. For many Roundup claimants, this means the two-year window starts not on the date of cancer diagnosis, but when a physician or attorney connected the diagnosis to glyphosate exposure. If you were diagnosed years ago but only recently learned of the litigation, you may still have time to file.
Latent injury doctrine: Roundup is treated as a latent-harm case. Courts have accepted that most claimants could not reasonably have known the cause of their cancer at the time of diagnosis, which is why the discovery rule -- not the date of first exposure -- controls the limitations period in California.
Tolling provisions: The two-year window may be paused in specific circumstances:
- ·Minority: If exposure or diagnosis occurred before the claimant turned 18, the clock typically starts on their 18th birthday.
- ·Legal disability: Tolling may apply if the claimant lacked legal capacity during the relevant period.
- ·Fraudulent concealment: If Bayer/Monsanto concealed material information about glyphosate's risks, courts may extend the deadline.
Statutes of limitations vary by state and depend on the specific facts of your case. Do not use general rules to calculate your personal filing deadline. Consult a licensed California attorney immediately.
Who Qualifies for a Roundup Claim in California
Mass tort litigation targets a defined exposure-and-diagnosis cohort. A California claimant generally qualifies if they meet all three criteria.
1. Significant Roundup exposure
Qualifying exposure involves repeated, substantial contact over an extended period -- not a single or incidental application. Strong claim profiles include:
- ·Residential users who applied Roundup across multiple growing seasons
- ·Agricultural workers: farmworkers, vineyard employees, and field laborers with occupational exposure
- ·Landscapers, groundskeepers, and nursery workers who applied the product professionally
- ·Municipal and parks crews managing roadside or public-space herbicide programs
- ·Golf course grounds staff
California's large agricultural sector means a significant population of occupationally exposed claimants.
2. Qualifying cancer diagnosis
The primary qualifying conditions are:
- ·Non-Hodgkin's lymphoma (NHL) -- the core qualifying diagnosis
- ·Diffuse large B-cell lymphoma (DLBCL)
- ·Follicular lymphoma
- ·Chronic lymphocytic leukemia / small lymphocytic lymphoma (CLL/SLL)
- ·Mantle cell lymphoma and other B-cell NHL subtypes
Other hematologic cancers may qualify depending on the facts. A licensed attorney can assess whether your specific diagnosis fits the current litigation cohort.
3. Temporal connection between exposure and diagnosis
Roundup exposure generally must predate the cancer diagnosis by a period consistent with the disease's typical latency -- often several years. A clear timeline of herbicide use prior to diagnosis strengthens the factual foundation of a claim.
How to Document Your Roundup Exposure
Documentation is the evidentiary backbone of a toxic tort claim. California Roundup plaintiffs typically collect:
Exposure records:
- ·Purchase receipts or credit card statements for Roundup products
- ·Photos of Roundup containers, storage areas, or application equipment
- ·Purchase history from Home Depot, Lowe's, Costco, or nursery suppliers
- ·Employer pesticide application logs and chemical inventory records
- ·Safety Data Sheets (SDS) for glyphosate-based herbicides used at work
- ·Witness statements from coworkers, family members, or neighbors
Medical records:
- ·Pathology report confirming cancer type and diagnosis date
- ·Oncologist and hematologist treatment notes
- ·Initial diagnostic workup and records of first symptoms
- ·Any physician documentation noting occupational or chemical exposure history
Employment records:
- ·W-2s, pay stubs, or union records showing agricultural or landscaping work
- ·Job descriptions referencing pesticide or herbicide application duties
You do not need to have all of this before speaking to an attorney. Most mass tort attorneys work on contingency and assist with record gathering after an initial claim assessment. Preserve any containers, receipts, or photos you currently have.
California-Specific Procedural Notes
California Roundup cases can proceed through federal or state court -- a choice with meaningful strategic differences.
MDL 2741 -- Federal consolidated proceeding:
MDL 2741 (In re: Roundup Products Liability Litigation) is pending before U.S. District Judge Vince Chhabria in the Northern District of California (N.D. Cal.). Federal Roundup cases nationwide are transferred to N.D. Cal. for consolidated pretrial proceedings, including general causation discovery and Daubert expert challenges.
California federal plaintiffs have an advantage: they file in the same district that hosts the MDL, which streamlines certain procedural steps. After MDL pretrial proceedings conclude, individual cases may be remanded to originating districts for trial, or resolved through settlement first.
California state court:
California state courts have been a significant battleground for Roundup litigation. The 2018 Johnson v. Monsanto verdict (Alameda County Superior Court) and subsequent trials established California state court as a viable and sometimes preferred forum. California juries have returned substantial verdicts in these cases, some of which were later reduced on post-trial motions or appeal.
Forum selection is a strategic legal decision. The choice depends on your county of residence, the specifics of your causation evidence, and the current state of MDL settlement discussions. A licensed California attorney with mass tort experience can advise which forum makes sense for your specific situation.
What the Roundup Settlement Framework Looks Like
Bayer reached a reported $10.9 billion global settlement in 2020 that resolved approximately 95,000 pending cases. That settlement is closed to new claimants. Ongoing litigation involves:
- ·Plaintiffs who opted out of the 2020 settlement
- ·New claimants whose cases arose after the settlement cutoff
- ·Cases not included in the original resolution
Settlement value drivers (based on publicly available information):
Settlement amounts in mass tort cases vary based on multiple factors:
- ·Cancer type, severity, and stage
- ·Duration and intensity of Roundup exposure
- ·Age at diagnosis and life expectancy impact
- ·Economic damages: lost income, medical expenses, ongoing care costs
- ·Strength of individual causation documentation
- ·Current stage of litigation (pre-discovery, discovery, trial-ready)
Publicly reported California jury verdicts -- including Johnson ($289M pre-reduction), Pilliod ($2B pre-reduction), and Hardeman ($80M) -- illustrate the wide range of potential outcomes before post-trial reduction and appeal. Individual settlement amounts within the 2020 global resolution were not publicly disclosed.
Settlement projections are speculative and entirely fact-specific. No attorney can guarantee any settlement value or outcome. This is not legal advice. Consult a licensed attorney for an assessment of your specific situation.
Consulting a California Attorney About Your Roundup Claim
If you were exposed to Roundup in California and later diagnosed with non-Hodgkin's lymphoma or another qualifying blood cancer, consulting a licensed California attorney is the appropriate next step.
Most mass tort attorneys handling Roundup cases work on a contingency fee basis -- no upfront costs, with attorney fees owed only from any recovery. A qualified attorney can evaluate:
- ·Whether your exposure history and diagnosis fit the current litigation cohort
- ·Whether you are within California's statute of limitations based on your specific facts
- ·Whether state or federal court is the better forum for your case
- ·The strength of your available documentation and where gaps exist
Act promptly. California's statute of limitations is strictly enforced. Waiting can eliminate your ability to file a claim regardless of the merits. Statutes of limitations vary by state and by the specific facts of each case.
This is not legal advice. Talk to a licensed attorney in California to understand the specific deadlines and options that apply to your situation.