Hi Manager40, those are automatic adjustments QuickBooks made to sync previous paychecks with CRA requirements. Corrections usually appear on the pay stub if there was an error in tax withholding, benefit deductions, or hours worked on a previous paycheck.
You may take a look at the amount beside the correction. If a positive amount shows, it indicates that money is being added to this paycheck because you were underpaid or over-taxed in the past. However, if you see a negative amount, it means that a deduction is being made because you were overpaid or under-taxed in a prior period.
If you need more information about the corrections made by QuickBooks to a specific pay stub and want to verify the accuracy of the amounts, I suggest contacting our Payroll Live Support team for further assistance. You can refer to this article for more details, including their operating hours: Get help with QuickBooks products and services.
Don't hesitate to always ask for help in the forum if you need anything else.