I really love how easy it was, using combined hcm has made my HR life so much easier! With their team we were able understand what our employee's are doing day by Day which helped us manage them better than ever before!! Also they have many different modules that can be used in any organization or department such as payroll etc.. Nothing at all actually but since this program isn't free there may come times where things get lost when creating new documents/forms ect... If someone needs something specific just ask because chances will always exist with anything online if its not listed then no problem i'm sure somebody else uses those features too.