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Class actions: you read about them in the newspaper or hear about them on television, but beyond the headlines and soundbites, what is a “class action” and how can a class action help you? This class actions guide unpacks the world of class proceedings, including the advantages, common types, and the typical steps (from start to finish…finish being money in your bank account). 

Topics covered:

The following topics will be covered in this guide:


What is a class action?

A class action is a type of civil litigation that allows one or a few individuals to sue one or more defendants—commonly, large companies or government bodies—on behalf of a large group of people who experienced a similar type of harm.

Class proceedings are a “procedural vehicle”—they do not alter the content of the rights and protections that Canadians have under the law. Rather, class action proceedings empower many people to sue the same defendant(s) for a common wrong in one action, as opposed to filing hundreds, or even thousands, of separate lawsuits, legal claims, or civil proceedings.

Much like personal injury law actions, class proceedings are litigated on a “contingent” basis. Contingency means that the plaintiffs and class members do not pay counsel unless they received money from the defendant(s) by way of a settlement or, less commonly, a court judgment. This makes class action lawsuits an accessible legal option for victims seeking compensation in Canada.

What are the advantages of a class action?

According to the Supreme Court of Canada, there are three primary advantages to participating in class actions:

Access to justice

Litigation (i.e., suing a person or company) is time-consuming, expensive, and stressful. It is practically impossible for one person to sue a large company: businesses have deep pockets and can afford to hire sophisticated corporate defence attorneys and legal teams to defend their interests throughout the lifetime of the litigation. By grouping similar claims together, class action lawsuits spread the cost of litigation across many people, thus making it possible for wronged individuals to bring an action against well-funded defendants in class action cases.

Judicial economy

There are only so many judges available to oversee legal cases. In a world without class actions—where multiple individuals may attempt to sue a company or the government based on the same events—a judge may be required to hear essentially the same case over and over again. Class action cases prevent this potential duplication of effort, allowing judges to devote more court resources to hearing other legal matters.

Behavioural modification

If you do something bad and never face consequences for your actions, it may be tempting to continue doing bad things. The same logic applies to corporate wrongdoing. If a corporation does something illegal that generates profit while causing widespread harm—but will likely never face any repercussions because the legal system is complex and expensive—will the corporation modify its behaviour of its own volition? Even the most optimistic amongst us with likely say: no, probably not.

Insert the class action: if the same corporation faces the prospect of a multi-year lawsuit where they may have to pay millions of dollars to the people it harmed, will the corporation reconsider its action? Yes, it may. Simply put, the prospect of facing a class action acts as a deterrent to engaging in illegal conduct and encourages corporate accountability and consumer protection.

What are common types of class actions?

Given that class actions are a “procedural vehicle”, any wrongdoing can be the subject of a class action provided the potential class members experienced a shared harm. That said, common types of class actions in Canada include:

Securities class actions

Provincial securities legislation, such as the Ontario Securities Act, requires public companies (i.e., a company that sells stock on an exchange, like the Toronto Stock Exchange) to disclose certain information publicly, so that potential investors can make informed investment decisions. Generally, securities class actions concern publicly listed companies that have either disclosed incorrect information (a “misrepresentation”) or failed to disclose information that they were obligated to disclose. Siskinds has been at the forefront of securities class actions in Canada, including as co-counsel in the high-profile securities action against SNC-Lavalin, which settled for $110 million1 in 2018.

Competition class actions

Competition class actions involve a contravention of Canada’s Competition Act. For example, a plaintiff may bring a class action lawsuit against a group of companies that agree to conspire together to raise the price of a good, such as batteries or chocolate.  (i.e., price-fixing). Competition class actions may also encompass allegations of misleading pricing practices, such as Siskinds’ current class action against SiriusXM for “drip pricing”—adding a surprise fee at the end of the purchasing process. These cases illustrate the various ways consumers can be affected by anti-competitive business practices.

Consumer protection class actions

Consumer protection class actions focus on corporations that charge undisclosed fees, impose terms that are unfair to consumers, or make false and misleading representations, among other illegal acts. These actions are generally brought under provincial consumer protection legislation, such as the Ontario Consumer Protection Act. Consumer protection class proceedings involve a wide variety of subject matters, from software used by car manufacturers to cheat on emissions tests, to E. coli food poisoning, to penalties for mortgage prepayment, among other issues. Such class actions play an important role in holding companies accountable and enforcing consumer rights.

Institutional abuse and humanitarian class actions

A growing focus of class litigation, class proceedings in this domain often concern abuse in institutional settings, such as at schools, group homes, and correctional facilities. Siskinds currently represents the plaintiff in a class proceeding against Hatts Off, a Hamilton-based group home. In this action, the plaintiff alleges that Hatts Off and others were negligent in their operation of the home and breached fiduciary obligations to the children and youth in their care. These cases highlight the ongoing legal scrutiny of institutional accountability and the role of class actions in addressing systemic issues.

Pharmaceutical class actions

Pharmaceutical and medical devices class proceedings in this arena focus on whether pharmaceutical companies and corporations that manufacture medical devices properly disclosed the risks of those drugs or devices to the patients, their treating physicians, and other healthcare providers. Siskinds is co-counsel in the settled pharmaceutical class action against Purdue Pharma and various affiliated entities. This action compensates individuals for the injuries they suffered because of the addictions that they developed from using OxyContin and OxyNeo. Pharmaceutical class actions hold companies accountable for insufficient risk disclosure and the impact on public health.

Other common types of class actions include environmental class actions, privacy breach, employment law, and product liability class actions.

Environmental class actions

Environmental class actions focus on whether corporations properly fulfilled their environmental responsibilities and complied with regulations, or whether corporate negligence caused harm to communities, property, or natural resources. Siskinds is currently leading a class action on behalf of beekeepers who suffered losses due to the dramatic reduction in honey bee populations and pollination capabilities caused neonicotinoids, a type of pesticide. Cases like this hold companies accountable for environmental damage and help communities recover from the social, economic, and health impacts of corporate negligence.

Privacy breach class actions

Privacy breach class proceedings examine whether companies properly safeguarded personal and sensitive information belonging to their customers, employees, or other stakeholders. They seek to hold companies accountable for failing to protect confidential data and compensate affected individuals.

Employment law class actions

Employment law class actions address whether employers complied with employment standards, workplace safety regulations, and labour laws, including proper payment of wages, overtime, and benefits. Siskinds has acted as co-counsel in multiple employment class actions to compensate affected individuals for financial losses and damages suffered due to employer non-compliance.

Product liability class actions

Product liability class actions involve determining whether manufacturers and companies properly designed, manufactured, or labeled their products to prevent harm to consumers. Examples of product liability cases include defective housing products, unsafe vehicles, medical products, and more. Siskinds has acted as co-counsel in product liability class actions involving these and other defective consumer goods. These class actions compensate individuals for injuries or damages caused by unsafe or defective products.

How long does a class action lawsuit take?

Litigation, generally, takes a long time. Class actions, even more so. More procedurally complex than standard litigation—with extra procedural steps and potentially protracted settlement negotiations, among other time-consuming elements—class action proceedings may take several years to well over a decade to reach full resolution.

At the outset of the litigation, it is difficult to say how long a class action will take.

Factors affecting the duration of a class action

The length of the action is influenced by factors such as:

  • the complexity of the matter,
  • concurrent class proceedings in the United States, and
  • the receptivity of defendants to mediating the dispute or negotiating a settlement agreement. 

For example, Siskinds and other Class Counsel filed the OxyContin class action claim in 2007, the settlement agreement was fully approved in 2022, and the deadline to submit claims closed on June 27, 2024. The claims administration phase of this proceeding—where a third-party decides who is eligible to receive compensation under the terms of the settlement agreement between the plaintiffs and the defendants—is ongoing.  On the other hand, the XL Foods beef recall class action settled within three years of being commenced. 

Key takeaways from class actions

If you and a large group of people have been harmed in a similar way, a class action lawsuit can help you seek redress in a cost-effective manner. While the process may take some time, participation in a class action can benefit you financially, benefit the Canadian justice system, and hold corporations and government bodies accountable for wrongdoing that would otherwise go unchecked.

Further reading on class actions

Now that you know what a class action is, what the advantages of a class action are, what types of class actions are commonly litigated, and the approximate timeline for the resolution of a class action, explore further posts to learn more:


  1. SNC-Lavalin shareholder class actions settle for $110 million. (2018, July 3). Canada Newswire. https://www.newswire.ca/news-releases/snc-lavalin-shareholder-class-actions-settle-for-110-million-683455991.html ↩︎

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