Payslip Approval refers to giving the Employer access to approve or decline payslips before they are published to employees.
If an Employer user has Payslip Approval permissions, they will be notified that they have payslips to approve, they can also check this from the Employer Dashboard by going to MANAGE | PAYSLIP APPROVAL.
The employer can approve or abandon the payslips prior to the publish date. If the employer user does not review the payslips prior to the publish date, the payslips will still be published in the normal way.