Amendments to Ontario’s Construction Act

Join Osler for an informative webinar on the amendments to Ontario’s Construction Act which came into effect on January 1, 2026. This session is designed to equip industry and legal professionals with practical, actionable insights on the new rules for

• mandatory annual holdback release
• invoicing and payment
• liens
• adjudication

This session will distill the key legislative changes enacted through Bill 216 and explain what they mean for owners, contractors, subcontractors, lenders, and counsel across the project lifecycle.

The amendments reshape fundamental processes including the content and treatment of proper invoices, the mandatory annual release and payment of holdback, expanded access to statutory adjudication, and clarifications to lien and trust regimes, with transition rules that affect both new and existing contracts.

This session is tailored for in‑house counsel, project owners and developers, general contractors, subcontractors, design professionals, lenders, and risk managers seeking a clear understanding of the new regime and how to adapt contracts, invoicing processes, payment controls, and dispute strategies accordingly.

The program will be led by senior members of Osler’s Construction and Infrastructure team, drawing on both solicitor and disputes perspectives to address project delivery as well as claims and adjudication strategy. Our lawyers’ practices span complex infrastructure and energy projects, procurement and contracting, and advocacy across courts, arbitration, and statutory adjudication, bringing practical insights from major Canadian projects and multi‑party disputes.