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LegalExpert answer · 2 min read

Can a shareholder go to court to enforce a unanimous shareholder agreement?

Under the CBCA, where a corporation or a director, officer, employee, agent, auditor, trustee, receiver, receiver-manager, sequestrator or liquidator does not comply with a unanimous shareholder agreement, a complainant or a creditor may apply to a court for an order directing compliance or restraining a breach, and the court may so order.

This page covers the compliance application, not an oppression claim. Under CBCA s. 122(2), every director and officer of a corporation must comply with the Act, the regulations, articles, by-laws and any unanimous shareholder agreement.

The CBCA compliance order

Under the CBCA, where a corporation or a director, officer, employee, agent, auditor, trustee, receiver, receiver-manager, sequestrator or liquidator does not comply with the Act, the regulations, articles, by-laws or a unanimous shareholder agreement, a complainant or a creditor may apply to a court for an order directing compliance or restraining a breach. On that application the court may so order and make any further order it thinks fit.

Who counts as a complainant

Under the CBCA, a complainant includes a registered holder or beneficial owner, and a former registered holder or beneficial owner, of a security of a corporation or any of its affiliates. It also covers a director or officer, or a former director or officer, of a corporation or any of its affiliates, and the Director. A complainant also includes any other person who, in the discretion of a court, is a proper person to make an application under that Part.

The Ontario version

Under Ontario’s OBCA, where a corporation or any shareholder, director, officer, employee, agent, auditor, trustee, receiver and manager, receiver or liquidator does not comply with the Act, the regulations, articles, by-laws or a unanimous shareholder agreement, a complainant or a creditor may apply to the court for an order directing compliance or restraining a breach. In Ontario, the court may so order and make any further order it thinks fit. Under Ontario’s OBCA, a complainant includes a registered holder or beneficial owner, and a former registered holder or beneficial owner, of a security of a corporation or any of its affiliates. In Ontario, a complainant also includes any other person who, in the discretion of the court, is a proper person to make an application under that Part.

What counts as a unanimous shareholder agreement

The CBCA defines a unanimous shareholder agreement as an agreement described in subsection 146(1) or a declaration of a shareholder described in subsection 146(2). Ontario’s OBCA defines it as an agreement described in subsection 108(2) or a declaration of a shareholder described in subsection 108(3).

Ask a lawyer whether you can apply on your facts. For the other route, see how a shareholder buyout works when business partners split up.

Sources

This answer is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Government of Canada (Department of Justice)Government
    Canada Business Corporations Act, R.S.C. 1985, c. C-44
    laws-lois.justice.gc.ca·Checked Oct 20, 2026
  2. 02
    Government of Canada (Department of Justice)Government
    Canada Business Corporations Act, section 247 (restraining or compliance order)
    laws-lois.justice.gc.ca·Checked Oct 25, 2026
  3. 03
    Government of Canada (Department of Justice)Government
    Canada Business Corporations Act, section 238 (definitions for Part XIX, including complainant)
    laws-lois.justice.gc.ca·Checked Oct 25, 2026
  4. 04
    Government of OntarioGovernment
    Business Corporations Act, R.S.O. 1990, c. B.16
    ontario.ca·Checked Aug 16, 2026
  5. 05
    Government of Canada (Department of Justice)Government
    Canada Business Corporations Act, section 2 (definitions)
    laws-lois.justice.gc.ca·Checked Oct 25, 2026

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