Collection with INotifyCollectionChanged and INotifyPropertyChanged

Here is the scenario, 

I have a grid, ObservableCollection ListOfEmployees; ObservableCollection does great job notifying if item has been added or removed. But what if specific property of type T has been modified, It fails to notify the same. I need a collection with both capabilities, to notify if Item has been changed and the property inside a item been changed.

Thank you in advance,

Rikam.