Understanding Mass Torts & Class Actions

Both mass torts and class actions are ways to handle situations where a large number of people have been harmed by the same defendant — a corporation, manufacturer, or other entity. The key difference comes down to how individual your case is treated.

In a mass tort, you file your own lawsuit, but it is coordinated with thousands of similar cases in a way that shares resources and builds common evidence. Your individual damages — how sick you got, what surgeries you had, how your life was affected — are still evaluated separately when it comes time to determine what you recover.

In a class action, one or a few lead plaintiffs represent an entire group. If the case settles, everyone in the class typically receives the same or similarly structured payment, often a modest amount, unless you opt out and pursue your own case.

The nature of your harm — and the harm of others like you — usually determines the type of case.

• Mass tort cases typically involve physical injury. If you took a drug that caused heart problems, used a medical device that failed, or lived near a chemical plant that made you sick, your injury is personal and unique to you. Your damages depend on your medical history, your prognosis, the impact on your work, and your quality of life. These cases are best handled as mass torts, where individual differences matter.
• Class actions are best suited when the harm is economic or systemic and relatively uniform across many people — such as a company overcharging thousands of customers by the same amount, or a data breach exposing everyone's personal information the same way. In these cases, the shared experience outweighs individual differences.

Sometimes the line blurs, and they can even overlap, as discussed below. An attorney familiar with complex litigation can assess the best path for your specific situation during a free consultation.

Yes. The same corporate misconduct can generate parallel litigation. For example, a contaminated water supply might produce both personal injury mass tort claims (for people who became ill) and a class action for economic damages (for reduced property values or the cost of replacing water systems). Certain pharmaceutical cases have involved class actions for economic harm — such as overcharging for a drug — running alongside mass tort personal injury claims from people who suffered serious side effects.

Each case type has its own legal standards and its own litigation path, and they can proceed simultaneously, either in the same court or in different courts.

A mass tort is a civil lawsuit in which a large number of individual plaintiffs claim they were harmed by the same product, chemical, or wrongful act. Common examples include:

• Defective prescription drugs (such as blood thinners, antidepressants, or diabetes medications) that caused unanticipated serious side effects
• Faulty medical devices (such as hip replacements, hernia mesh, or IVC filters) that failed prematurely or caused injury
• Toxic chemical exposures at contaminated sites, military bases, or through contaminated drinking water
• Consumer products containing dangerous substances (such as asbestos, PFAS "forever chemicals," or talc)
• Industrial accidents or discharges affecting neighboring communities

What makes mass torts distinctive is that each plaintiff's injuries, while caused by the same defendant's conduct, can vary significantly in severity and kind. One person might have developed cancer; another might have experienced organ damage; another, a serious infection requiring repeated surgery. Because the injuries differ, compensation must be individualized — unlike a class action, where everyone gets essentially the same deal.

When mass tort cases are filed in federal courts across the country involving the same product or conduct, a special judicial panel — the United States Judicial Panel on Multidistrict Litigation (JPML) — can transfer all of those cases to a single federal judge in one district. This consolidated proceeding is called Multidistrict Litigation, or MDL.

Well-known examples of MDLs include the litigation over opioid medications, PFAS water contamination, Roundup (glyphosate) herbicide, Camp Lejeune water contamination, and countless defective drug and device cases over the past three decades. At any given time, there are usually dozens of active MDLs in federal courts across the country.

Your individual case remains your own within the MDL. You have your own attorney, your own file, and ultimately your own recovery. The MDL is simply the vehicle that allows the pretrial work to be done efficiently and consistently across all plaintiffs.

You can — but in many mass tort situations, going it alone is financially and practically impossible, regardless of how strong your claim might be. Here's why:

• The cost of expert testimony is staggering. Proving that a pharmaceutical company's drug caused your cancer, or that a manufacturer knew its device was defective, requires multiple specialized expert witnesses — toxicologists, epidemiologists, biomedical engineers, cardiologists, economists. A single expert can charge $500 to $1,000 per hour or more, and a full set of qualified trial experts in a complex product liability case can cost $500,000 to several million dollars before a single juror is seated.
• Discovery is expensive and time-consuming. Defendants are often enormous corporations with nearly unlimited legal budgets. They will produce millions of pages of documents. Reviewing them requires attorneys and professional document review teams over months or years.
• Defendants fight hard. A company facing one lawsuit might settle it cheaply to make it go away. A company facing 50,000 individual lawsuits it had to fight one at a time would be paralyzed — but so would the plaintiffs. Consolidation changes the power equation.
• Science must be proven, not just alleged. Courts require rigorous, admissible scientific evidence linking the defendant's product to the plaintiff's injury. This science is often developed collectively across the litigation and would be far beyond the reach of any individual plaintiff acting alone.

Consolidated litigation offers significant benefits, but also some trade-offs worth understanding.

Advantages:

• Strength in numbers. Thousands of plaintiffs with similar claims send a powerful message to defendants and their insurers. It is far harder for a corporation to dismiss or minimize harm when it is confronted with documented injury across tens of thousands of people.
• Shared scientific infrastructure. The best expert witnesses, the most sophisticated scientific analyses, and the most comprehensive document review are developed collectively and made available to all plaintiffs — at a fraction of what any individual would pay.
• Judicial efficiency. One experienced judge overseeing all cases means consistent rulings, predictable schedules, and less risk of wildly different outcomes on identical legal questions.
• Leverage for settlement. The scale of consolidated litigation often pushes defendants toward global settlements that are far larger than what any individual plaintiff could negotiate alone.
• Your individual case is still yours. In a mass tort, unlike a class action, your recovery is based on your own injuries. If your case is stronger, you recover more.

Potential drawbacks:

• It takes time. Complex mass tort litigation can take years — sometimes many years — to resolve. This is not a fast process.
• You may feel like a number. With thousands of cases pending, it can sometimes feel like your individual story gets lost. Choosing an attorney who gives you genuine attention and communication is critical.
• Outcomes are uncertain until the end. Not every mass tort ends in settlement. Some are litigated through trials, appeals, and remand proceedings before resolution is achieved.
• Global settlements require individual decisions. When a global settlement is reached, each plaintiff must independently decide whether to accept it. No one can force you to settle. But understanding what you're being offered — and what your alternatives are — requires careful guidance from your attorney.

There is no single answer — it depends enormously on the stage of the litigation when you file, the complexity of the science, the defendant's litigation posture, and many other factors. In general:

• Early-stage litigation (where the MDL is newly formed or where cases are still being investigated) may take 3–7 years or longer to resolve.
• Mature litigation (where an MDL is well-established, the science is developed, and bellwether trials have occurred) may resolve more quickly, sometimes within 1–3 years of a plaintiff joining.
• Post-settlement process. With thousands of litigants in the average mass tort, the process can be time-consuming even after settlement has been reached. Settlement registration, release finalization, claims review and lien resolution all take significant time, and it is not unusual for the entire post-settlement process to take in excess of a year.

Mass torts typically involve thousands — and sometimes tens of thousands — of individual clients with their own unique claims, and there are far more moving parts than there are in individual litigation. Moreover, defendants in mass tort cases are typically massive companies with enormous resources who have every incentive to inject delay into the proceeding at every opportunity. Finally, even post-settlement, there is an incredible amount of administrative work to be done to comply with government requirements regarding medical liens, probate, and similar matters. Simply stated, it all takes time.

Because mass tort cases are evaluated individually, the damages you may be able to recover reflect your specific experience. Common categories include:

• Medical expenses — past and future costs of treatment directly related to the injury caused by the defendant's product
• Lost wages and loss of earning capacity — income you missed due to your injury, and income you may lose in the future
• Pain and suffering — compensation for physical pain, emotional distress, and the overall diminishment of your quality of life
• Loss of consortium — harm to your relationships with a spouse or family members caused by your injury
• Punitive damages — in some cases, where the defendant's conduct was especially reckless or willful, additional damages intended to punish the wrongdoer and deter similar behavior in the future

The severity and nature of your injury, your medical history, your age, your occupation, and many other factors all influence the ultimate value of your individual claim.

A class action lawsuit is a legal proceeding in which one or a small number of named plaintiffs — called class representatives — sue on behalf of a large group of people who have suffered similar harm. If the court certifies the case as a class action, the outcome — whether a judgment or a settlement — binds all members of the class.

Class actions are especially powerful tools when:

• The harm to each individual is too small to justify a separate lawsuit (for example, a $15 overcharge on a service fee for millions of customers)
• The wrongdoing is uniform and systemic (the same deceptive practice applied to everyone the same way)
• Corporate accountability is the primary goal — stopping the harmful practice for everyone, not just compensating individual victims

Class actions have produced landmark results: they have forced pharmaceutical companies to stop misleading marketing, pressured financial institutions to eliminate hidden fees, compelled technology companies to change data practices, and secured billions in recoveries for consumers and workers who otherwise would have had no practical way to fight back.

Before a case can proceed as a class action, a court must formally approve — or certify — it as such. This is a critical step, and defendants often fight it aggressively because certification signals the potential for massive liability.

To certify a class, courts evaluate whether:

• Numerosity — the class is large enough that individual lawsuits would be impractical (usually dozens or more, but often thousands)
• Commonality — there are common legal or factual questions shared across all class members
• Typicality — the named plaintiffs' claims are typical of those of the broader class
• Adequacy — the named plaintiffs and their attorneys will fairly and adequately represent the interests of the entire class
• Predominance — common issues predominate over individual ones (in federal court under Rule 23(b)(3))
• Superiority — a class action is the superior method for resolving the dispute

Class certification is often one of the most important procedural steps in class action litigation. If the court denies certification, the case cannot proceed as a class action. Individual members would need to file their own lawsuits — which, depending on the harm involved, may or may not be practical.

Advantages:

• Access to justice for small claims. Without a class action, most people would never pursue a $20 or $50 claim against a large corporation. Class actions make accountability possible when individual suits would never happen, and seek to eliminate the incentive for massive companies to fleece consumers a little bit at a time.
• No up-front costs or effort. As a class member, you don't have to hire a lawyer, attend depositions, produce documents, or participate in the litigation unless you want to. The named plaintiffs and class counsel handle everything.
• Corporate deterrence. The prospect of class-wide liability — potentially hundreds of millions of dollars — gives corporations a powerful incentive to comply with the law and treat customers fairly.
• Injunctive relief. Class actions can force companies to change harmful practices going forward, benefiting not just current class members but future consumers as well.

Potential drawbacks:

• Individual recovery is often modest. When millions of people share a settlement, each person's share can be small — sometimes just a few dollars or a coupon. Ultimately, accountability may matter more than the check.
• You give up control. As a passive class member, you don't make decisions about litigation strategy, settlement terms, or whether to accept an offer. Class counsel negotiates on behalf of everyone.
• Settlement approval takes time. Even after a settlement is reached, it must be reviewed and approved by the court in a fairness hearing, and the actual distribution process can take additional months.
• You may be bound without knowing it. If you're an eligible class member and don't opt out within the deadline, you may be bound by the settlement and lose the right to sue separately — even if you never received the notice.

In most class actions seeking money damages (certified under Rule 23(b)(3) in federal court), yes — you have the right to opt out. When a class is certified, the court requires that notice be sent to class members explaining the case, what you would receive, and how to exclude yourself if you choose.

You might consider opting out if:

• Your individual damages are substantially greater than what the class settlement would provide
• You have a unique claim or theory of liability that isn't adequately represented by the class
• You want control over your own litigation strategy and settlement decisions

Opting out means you retain your individual right to sue — but you'll need your own attorney and your own litigation strategy. Whether that's the right choice depends entirely on the specific facts of your situation.

This varies enormously from case to case. Factors that affect your individual recovery include:

• The total settlement fund and the number of class members who file claims
• Whether the settlement provides equal shares, tiered amounts based on harm levels, or pro-rata distributions
• Whether attorney's fees and litigation expenses are paid from the settlement fund (they usually are, subject to court approval)
• The claims rate — many class members never file claims, which can increase the per-person recovery for those who do, which is why you may not know exactly how much you'll be receiving when you submit your claim

In consumer fraud or data breach cases, individual payouts might range from a few dollars to a few hundred dollars, though in some cases, class recoveries can be much higher. You should not go into a class action expecting to get rich, however — its role as a check on conduct is at least as important a goal of class action litigation as compensation.

Class counsel must submit their fee request to the court, and a judge independently reviews whether it is reasonable given the work done and the result achieved. This is an important protection for class members.

Class actions span a wide range of industries and wrongful practices. Common categories include:

• Consumer protection — deceptive advertising, false labeling, hidden fees, unfair billing practices
• Data privacy and security — data breaches exposing personal or financial information, unlawful collection or sale of user data
• Financial services — improper fees, interest rate manipulation, predatory lending, unauthorized account practices
• Employment — wage and hour violations, unpaid overtime, misclassification of workers, discrimination
• Antitrust — price-fixing, market manipulation, monopolistic practices that harm consumers
• Securities fraud — misleading statements to investors about a company's financial condition or prospects
• Environmental harm — pollution, contamination, or regulatory violations affecting a defined community

An attorney-client relationship is formed only when an attorney has reviewed your information and a retainer agreement has been signed by both you and an attorney at our firm. Submitting an intake form, filling out a questionnaire, or visiting this website does not by itself create an attorney-client relationship. Until a retainer is countersigned by our firm, no attorney-client relationship exists.

After submitting your intake form, a member of our team will review your information and be in touch — usually within one to two business days. We may call or email to ask follow-up questions. If we determine that you have a viable claim, we will send you a retainer agreement for your review along with a more detailed questionnaire. Remember: no attorney-client relationship is formed until an attorney at our firm has reviewed your case and countersigned the retainer agreement.

For many cases — particularly those involving drug or device injuries — medical records are essential. Our normal practice is to have you identify your medical providers, sign a medical authorization, and our team will obtain records on your behalf. In some cases, however, it can be faster and easier for you to gather your own records first (especially if you have an online portal with your health care provider), which can speed up the evaluation. Either way, we will walk you through the process step by step.

The reality is that the vast majority of mass tort and class action cases settle without clients ever appearing in court. In some cases, clients are asked to participate in a deposition — a formal question-and-answer session with the other side's attorneys — which can often be done by video from your home. We will prepare you thoroughly for any deposition and be present with you throughout. For the relatively rare cases that proceed to trial, we will discuss your participation well in advance.

Yes. We handle cases in all 50 states. We are either admitted to practice or collaborate with other attorneys who are admitted in all of the courts where we litigate. The fact that you live far from St. Louis is not a barrier — we have helped clients from coast to coast and handle the vast majority of client communication by phone, email, and video.

Mass tort and class action attorneys handle these cases on a contingency fee basis — meaning you pay nothing up front and owe no attorney's fees unless and until you recover money. For mass torts, the attorney's fee is a percentage of your recovery, agreed to before the representation begins. In class actions, attorneys petition the court for a reasonable fee based upon the amount of time spent, the result, or a combination of the two, and the court determines the amount of the fee. In both situations, however, there is no financial risk to the client whatsoever.

Given the complexity of mass tort cases, the resources and time required to litigate a claim through to conclusion, and the specialized nature of these cases, we charge a standard 40% contingent fee unless otherwise noted. Fee arrangements are disclosed in writing before you sign anything and must be approved by you.

This arrangement is a fundamental feature of the American civil justice system. It gives people of any income level access to sophisticated legal representation that they could never afford to pay by the hour — ensuring that the strength of your claim, not the depth of your pockets, determines whether you can pursue justice.

Initial consultations and reasonable follow up are always free. You are never obligated to retain an attorney just because you have spoken with one, and you are not going to be billed just because you've reached out to us.

Litigation expenses — sometimes called costs — are different from attorney's fees. Expenses are the actual out-of-pocket costs of pursuing the case: filing fees, deposition costs, travel, document management, and most significantly in the context of complex litigation, expert witnesses.

In mass tort and class action cases, expenses are advanced by the law firm on your behalf. You do not write checks for these as the case progresses. If the case resolves favorably, expenses are reimbursed from the recovery. If the case does not succeed, the law firm absorbs those costs — you do not owe them.

This arrangement is spelled out clearly in your fee agreement before you sign anything. It is another way contingency fee representation removes financial barriers to justice.

The most significant expense items in complex mass tort and class action litigation are typically:

• Collection and review of medical records (in mass tort cases)
• Court-imposed filing and service fees
• Expert witnesses (medical experts, economists, scientists, engineers)
• Document management platforms for reviewing millions of pages of evidence
• Deposition costs (court reporters, videographers, transcripts)
• Travel for depositions, hearings, and trial preparation
• Demonstrative exhibits and trial preparation technology

In large MDL proceedings, a common benefit fund is a pool of resources created to compensate the lead attorneys who do the heavy lifting that benefits all plaintiffs across the litigation — regardless of who their individual attorney is.

Here's the key concept: in an MDL with, say, 40,000 plaintiffs represented by hundreds of different law firms, only a small group of attorneys — the Plaintiffs' Steering Committee — actually conduct the core discovery, argue the critical motions, depose the company's key executives and scientists, hire and present the lead expert witnesses, and try the bellwether cases that drive the entire litigation. The work they do creates enormous value for every single plaintiff.

Common benefit assessments are typically a percentage of each plaintiff's recovery — often 4% to 12%, though the exact amount is set by the MDL court. In most cases, the common benefit assessment is shared by you and your individual attorney — your attorney pays a portion of their fee, and you as the client pay a portion as a cost of the case. They come out of the overall recovery, not as an additional charge to you, and in most cases, the court requires the assessment to be deducted from your recovery before it is even sent to your individual attorneys. Your fee agreement should explain how common benefit assessments work in your specific case.

The difference between common benefit expenses and individual expenses is also important:

• Individual expenses are costs specific to your case — things like obtaining your personal medical records, costs specific to your deposition, or expenses that only your individual claim requires.
• Common benefit expenses are the shared infrastructure — the million-dollar expert panels, the document review databases, the science development, the courtroom presentations — that every plaintiff benefits from but no individual could afford alone.

This shared cost structure is one of the most consumer-friendly aspects of mass tort litigation. Rather than each of 40,000 plaintiffs independently hiring (and paying for) the same toxicologist, that expert is retained once for the common benefit of all, and the cost is shared proportionally. You get access to the best science at a tiny fraction of what it would cost you individually.

This is one of the most important decisions you will make. Not every law firm is equipped to handle complex mass tort or class action litigation. Some things to consider:

• Experience in complex litigation. Look for a firm with a track record in mass torts, MDL proceedings, and class actions — not just general personal injury work. Ask specifically about their experience with the type of case you have.
• Relationships within the MDL leadership. In an MDL, the Plaintiffs' Steering Committee drives the litigation. A firm with relationships, or a seat at the table, in the relevant MDL can better advocate for your interests and keep you informed of key developments.
• Attention and communication. With thousands of cases pending, some firms treat plaintiffs as file numbers. Look for a firm that is accessible, explains things clearly, and keeps you updated without you having to chase them.
• Transparent fee agreements. Everything should be in writing and explained clearly before you sign. Never hire an attorney who won't clearly explain their fee structure.
• No pressure. A reputable firm will explain your options and let you make an informed decision. If you feel pressured, walk away.

You are also free to consult with more than one attorney before deciding. Initial consultations cost nothing and obligate you to nothing.

Yes. The attorney-client privilege is one of the most fundamental principles in the legal system. From the moment you speak with an attorney — including during a free initial consultation — everything you share is confidential and protected from disclosure.

This means the attorney cannot share what you've told them with the defendant, the court, or anyone else without your permission. The privilege exists to ensure that people can speak honestly with their lawyers without fear that those communications will be used against them.

This protection applies even if you ultimately decide not to retain the attorney you consulted.

The most important thing is to act without unnecessary delay. Here's what to do:

1. Gather your records. Pull together any medical records, prescription information, device records, purchase receipts, or other documentation related to the product or exposure you're concerned about. You don't need to have everything organized — just start collecting.
2. Write down your story. Note when you were first exposed to the product or substance, when you first noticed symptoms, the diagnoses you've received, the treatments you've undergone, and how your life has been affected. Details matter and memories fade.
3. Contact an attorney promptly. Deadlines — statutes of limitations — are real, and they can permanently bar your claim if missed. An attorney can evaluate your situation and advise you on any applicable deadlines at no cost to you.
4. Do not contact the manufacturer or defendant. Do not respond to any outreach from the company, their insurance carrier, or their lawyers. Refer all such contacts to your attorney once you retain one.
5. Continue your medical care. Your health comes first. Document everything, keep all appointments, and follow your doctors' advice. Your medical records are the foundation of your legal claim.