The Crown's Duty to Consult and Accommodate

Where the duty comes from

The Crown''s duty to consult and accommodate Indigenous peoples is grounded in the honour of the Crown. It is not a contractual duty. It is not (only) a fiduciary duty. It is a constitutional duty arising from the unique relationship between the Crown and Indigenous nations.

When the duty is triggered

Haida Nation v BC (2004) sets the trigger:

1. The Crown has actual or constructive knowledge of a potential Aboriginal or treaty right; AND
2. The Crown contemplates conduct that may adversely affect the right.

Both elements must be present. Knowledge plus contemplated adverse-affecting conduct = duty engaged.

The duty applies to asserted rights — not yet proven. Otherwise, the s.35 protection would be hollow because rights would have to be proven before any consultation could occur.

Scope of the duty

Haida set out a spectrum:

• Weak claim, low impact: notice, information sharing.
• Strong claim, severe impact: deep consultation, perhaps accommodation.

The depth is proportionate to (a) the strength of the case for the right and (b) the seriousness of the potentially adverse effect.

Procedural delegation

The Crown may delegate procedural aspects to project proponents (e.g. environmental-assessment consultation). The constitutional obligation remains with the Crown.

Treaty rights

Mikisew Cree First Nation v Canada (2005) extended the duty to treaty rights. Treaties, like asserted Aboriginal rights, attract the duty.

Regulatory consultation

Clyde River v Petroleum Geo-Services (2017) and Chippewas of the Thames v Enbridge (2017) addressed regulator-led consultation. A regulatory body may discharge the Crown''s duty if its process is procedurally adequate and substantively engaged. Otherwise the Crown must supplement.

What the duty does not require

• It does not require consent in the absence of established title (Tsilhqot''in changes the analysis where title is established).
• It does not give Indigenous nations a veto.
• It does not displace ordinary administrative-law remedies.

But where the duty is breached, the underlying decision is unlawful and may be quashed.

What it does require

• Substantive engagement, not box-ticking.
• Reasonable accommodation where adverse effects are serious.
• Documentation of the process.
• Honest negotiation in the spirit of the honour of the Crown.

Mikisew Cree (2018) clarified that the duty does not apply to the legislative process itself. UNDRIP and BC''s DRIPA are reshaping expectations beyond the formal Haida framework.

Drafting tip

When advising a Crown actor: document the consultation process, the depth chosen, the Indigenous response, and the accommodations made or refused. When advising an Indigenous nation: pursue both procedural challenges (was there genuine consultation?) and substantive challenges (were accommodations adequate?).