Multiple levels escalation for deadline monitoring

Hi all,

We have a business requirement to perform multiple levels escalation in one of the workflow steps. If the approver does not approve the work item(WI) after one day, a mail notification will be sent to the approver. A second mail will be sent again if approver still doesn't approve WI after 48 hours. Then the third/fourth mail will be sent to approver and approver's boss if approver still doesn't approve WI after 72 / 96 hours. The fifth mail will be sent to approver's boss's boss if WI is not approved still after 5 days.

I know how to do simple and modeled deadline monitoring in workflow builder. But I don't know whether our business requirement can be achieved in workflow builder( and this is a step in dynamic parallel processing). Other option I have is to create an ABAP report to go through the table stores workflow run time data and make this report run several times a day in the batch to send mail notification reminder.

Did anybody have a similar business requirement like ours? What's the best way to handle it - build it in workflow builder or write an ABAP report?

Thank you in advance,

Merta