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Oppression Remedy in Ontario: How Minority Shareholders Can Fight Back

Date Released
November 13, 2026

Owning part of a company should mean having a say in it. But in many privately held businesses, minority shareholders find themselves frozen out. They stop receiving financial information, they’re removed from management, or they discover that the majority owners are paying themselves generously while dividends dry up. If that sounds familiar, Ontario law gives you a powerful tool: the oppression remedy.

What the oppression remedy is

The oppression remedy is found in Ontario’s Business Corporations Act, and a similar remedy exists for federal corporations under the Canada Business Corporations Act. It allows shareholders, and in some cases directors, officers and creditors, to ask the court for help when a corporation’s affairs are run in a way that is oppressive, unfairly prejudicial to them, or unfairly disregards their interests.

What makes the remedy so useful is its flexibility. You don’t have to prove that someone broke a specific rule. Instead, courts look at what is fair in the circumstances of your business.

How courts decide

The Supreme Court of Canada set out the approach in a leading case called BCE. The court first asks whether the complaining shareholder had reasonable expectations about how the company would be run. It then asks whether those expectations were violated by conduct that was oppressive, unfairly prejudicial or unfairly disregarded their interests.

Reasonable expectations can come from many places: a shareholder agreement, past practice, promises made when you invested, or the nature of the relationship. In small, closely held companies, courts often recognize that owners expected to be involved in management and share in profits.

Common examples

Oppression claims often arise when a minority owner is removed as a director or employee without good reason, when new shares are issued to dilute their stake, when the majority diverts business opportunities to another company they control, or when the company refuses to share basic financial information. Paying excessive salaries or bonuses to majority owners instead of dividends is another familiar pattern. Each case depends on its facts, but these situations frequently raise red flags.

What a court can order

Courts have very broad powers under the oppression remedy. They can order the majority or the company to buy out the minority shareholder at a fair value, set aside transactions, compensate the shareholder for losses, change how the company is managed, or, in extreme cases, wind up the company. In practice, many disputes end with a negotiated buyout once the court process is underway.

Before you go to court

Litigation isn’t always the first step. A well-drafted demand letter or a request for corporate records can sometimes open the door to negotiation. Our article on resolving partnership disputes without going to court explains some alternatives, and corporate governance practices that prevent boardroom disputes can help avoid these problems altogether.

Timing matters, though. Delays can weaken your position, especially if the majority continues to move assets or dilute your shares.

Start gathering documents now: the shareholder agreement, any financial statements you’ve received, emails about decisions you were left out of, and any promises made when you invested. These records often form the backbone of an oppression claim.

Get advice on your shareholder dispute

Our commercial litigation team represents minority and majority shareholders in disputes across Ontario, including Toronto and Hamilton. Learn more about our Toronto commercial litigation lawyers or our Hamilton corporate lawyers.

Talk to us about your shareholder dispute.

This article is general information, not legal advice.

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