The 2026 Annual Dependent Certification (ADC) notice is scheduled to be mailed by the GM Canada Benefits Centre on Monday, August 24, 2026 to all GM Canada employees/retirees/surviving spouses who have dependent child(ren) 18 to 25 years of age (26 in Quebec) currently enrolled in health care coverage.
In order to ensure eligible dependent child(ren) remain covered under the GM Health Care Plans, members will be required to respond and certify their child’s eligibility by the deadline. Employees can certify online at gmcanadabenefits.com or by calling the GM Canada Benefits Centre at 1-877-442-4625. The window this year will remain open from Tuesday, September 1 through Friday, September 18, 2026.
Failure to respond will result in the cancellation of coverage for the targeted dependent(s) effective November 1, 2026.