Email notification to current employee's Supervisor

Summary

Need to know how to send an email notification to current employee's Supervisor

Content

My client wants to have the system automatically send a notification to the supervisor of an internal candidate when he/she applies to a requisition.  The employee's Supervisor is not necessarily the same as the Hiring Manager on the Requisition.  We have a custom integration of Taleo with Fusion and know that the supervisor info is captured in Fusion.  There is no triggering event available to accommodate this. 

Has anyone developed a process for doing this.   If so, can you please provide details.

Many thanks,