If you continue working past age 65, you will still be eligible for Employment Insurance (EI) benefits if you lose your job, as long as you have worked enough hours to meet EI program requirements. You must apply to receive EI benefits and you should apply as soon as you stop working.
For more information, see:
EI and Pensions
You can receive EI benefits and your pension at the same time. If you return to work, work enough insurable hours, and meet the requirements for setting up an EI claim, your pension income will not be deducted from your EI benefits.