I would like to figure out a way to attach employees to my jobs in job cost (P51006).

I would like to figure out a way to attach employees to my jobs in job cost (P51006).  I was looking into using supplemental data, but this does not appear as though it will work for me in that I would need to list all employees into a UDC table and then constantly maintain the UDC.  Does anybody have any suggestions on how I can do this.  I have also considered using media object attachments, but what I would really like is to be able to drive this lookup from the address book.