Notification for when a client INSTALLs/UNINSTALLs software

I would like to be able to know when my clients install or uninstall software.  I often get requests from company owners, that say they want to monitor what employees install and uninstall.   Not as a "NOSEY" or "CONTROL FREAK" situation, but just to hold someone accountable when they are messing with software that they should not be.