How to Gather the Right Evidence for a Strong Mass Tort Claim

When you’re filing a mass tort claim, the strength of your case depends on one thing more than anything else: the evidence you can provide. You don’t need to have every document before you start your claim, but the more information you can gather early on, the smoother the process becomes.

This guide breaks down the types of evidence that matter most, why they matter, and how to collect them without feeling overwhelmed.

Why Evidence Matters in Mass Tort Cases

Mass torts often involve hundreds or thousands of people harmed by the same product, drug, chemical, or device. Because so many people are involved, law firms must build each individual case using clear, reliable proof.

Your evidence helps attorneys:

• Confirm the product or exposure involved

• Document the injuries you experienced

• Connect your diagnosis or symptoms to the product

• Establish when and how long you used it

• Determine whether you qualify for compensation

Strong evidence doesn’t have to be complicated, it just needs to be accurate.

The Most Important Types of Evidence to Gather

1. Proof That You Used the Product or Were Exposed

This is step one. Depending on the case, helpful documents may include:

• Receipts or order history

• Packaging or labels

• Photos of the product

• Pharmacy printouts

• Membership or loyalty program records

• Workplace records (for chemical or environmental exposure)

If you don’t have receipts, don’t panic, many claims move forward without them. Attorneys can often verify product use through other sources.

2. Medical Records Related to Your Injury

Medical records are the backbone of your case. They show when symptoms began, what treatment you received, and how your health changed over time.

Look for:

• Diagnosis reports

• Imaging (CT, MRI, ultrasound, X-ray)

• Lab results

• Doctor visit notes

• Emergency room summaries

• Surgical reports

• Prescription history

You don’t have to collect everything alone, law firms typically help request detailed records once your claim moves forward.

3. Photos, Notes, or Personal Documentation

Your own documentation can be extremely valuable.

Examples include:

• Photos of symptoms, medical devices, or injuries

• A journal of pain, side effects, or functional limitations

• Notes about when symptoms started

• Timeline of when you used the product

Small details often help build a clearer picture of what happened.

4. Witnesses or People Who Can Support Your Timeline

Sometimes someone else can help confirm your product use or symptoms:

• Family members

• Friends

• Coworkers

• Caregivers

Their statements don’t need to be formal — attorneys will handle that later — but knowing who observed what can strengthen your case.

5. Relevant Financial or Work-Related Records

If your injury affected your job or finances, gather:

• Timesheets

• Pay stubs

• Disability forms

• Time-off requests

• Proof of lost wages

These documents help determine the full impact of your injury.

Tips for Gathering Evidence Without Feeling Overwhelmed

Start With What You Already Have

Don’t wait for the “perfect” document. Even small pieces of evidence help build your claim.

Keep a Folder for Everything

Digital or physical, whatever works for you. Consolidating documents prevents delays.

Save Screenshots and Emails

Order confirmations, pharmacy reminders, and loyalty program records are often stored online.

Don’t Worry If You’re Missing Pieces

Most people are. Law firms request medical records and other official documents on your behalf later in the process.

The Bottom Line

You don’t need to do everything alone. But gathering whatever evidence you can — even small pieces — speeds up your claim and helps ensure your case is as strong as possible.

If you think a product or exposure harmed you, We Win Suits can help guide you through every step of the process.