Depending on the work you do, your income could increase or decrease. The latter is more likely.
Pension plan and personal savings
To make up for lost income, you could use your personal savings or the amounts accrued under your pension plan.
A caveat: Be sure you will have sufficient savings to maintain your lifestyle for the rest of your life.
If necessary, consult a financial planner.
from personal savings
Pension under the Québec Pension Plan
As of age 60, you could also choose to apply for your retirement pension under the Québec Pension Plan to make up for the lost earnings. If you work while receiving a retirement pension, you will continue to contribute to the Plan. As a result, the amount of your pension will increase.
A word to the wise: If you apply for your pension at age 60, the amount will be lower for the rest of your life.
On the other hand, if you wait to apply, the amount will increase.
under the QPP
Old Age Security pension
You can apply as of age 65.
If you apply after that age, the amount will be higher.
under the OAS program