Understanding Consent Rights under the BC Mental Health Act

• Category: Consent Rights
• Tags: deemed consent, health care consent, Mental Health Act, patient autonomy, advance planning
• SEO Meta Description: Learn how consent works (and doesn’t work) for involuntary patients under BC’s Mental Health Act, including “deemed consent,” your rights, and how to plan ahead.
• Keywords: deemed consent BC, Mental Health Act consent, involuntary treatment consent, BC patient rights
• Author: ConsentBC Research Team
• Last Updated: June 2026
• Slug: /resources/understanding-consent-rights

Excerpt Under BC’s Mental Health Act, involuntary patients are “deemed” to consent to psychiatric treatment. This article explains what that means, your remaining rights, and practical steps to protect your autonomy.

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In general Canadian and BC law (Health Care (Consent) and Care Facility (Admission) Act), adults are presumed capable of making their own health care decisions. If incapable, a substitute decision-maker (usually family or a chosen representative) steps in.

The Mental Health Act exception – “Deemed Consent” (Section 31) Once certified as an involuntary patient, psychiatric treatment authorized by the facility director is deemed to be given with your consent. There is no requirement to assess your capacity to consent, ask for your agreement, or involve family/supporters in the decision. This applies to medication, ECT, and other psychiatric interventions.

This is one of the most criticized aspects of BC law and is the subject of ongoing legal challenges and reform advocacy. BC remains an outlier compared to most other Canadian provinces.

What Rights Do You Still Have?

• You can still request a second medical opinion on whether the treatment is appropriate.
• You can apply for a Review Panel hearing to challenge your detention (which indirectly affects treatment authority).
• You can document your wishes in advance (see Representation Agreements and Advance Directives).
• Non-psychiatric medical treatment (e.g., for physical illness) generally still requires consent or proper substitute decision-making.

Planning Ahead – Before Any Detention

Creating legal documents while you are capable is the strongest way to protect your voice:

• Representation Agreement (especially Section 9) – Allows you to name someone to make personal and health care decisions if you become incapable.
• Advance Directive – Specific instructions about treatments you do or do not want.
• Enduring Power of Attorney – For financial and legal matters.

These documents can influence care even under the Mental Health Act in some situations and help ensure your values are known.

Key Resources

• Official incapacity planning tools: gov.bc.ca (search “Representation Agreement”)
• Legal Aid BC & Mental Health Law Program for advice

Call to Action Contact ConsentBC for help understanding how to create or use these planning tools, or to learn about current reform efforts around consent.