Agent Sends Report When Data is Updated

Summary

If I have an agent send a report on a monthly basis is it possible for that report to be sent out automatically when there's a change in data.

Content

We would like to send a monthly report that will show all new hires starting after 7/1. But we'd like a report to automatically be sent if there are any changes to the report. For instance let's say the report goes out on 7/1, then I hire someone on 7/10. Can that report be sent out using an agent but automatically showing the new info?

Has anyone done something similar?

Thanks,
Margaret