LibreOffice for a desktop version of office productivity applications... would be more than enough for most users. Not sure what the options are for web-based office applications though.
10 years ago the police stations (the "gendarmerie" to be precise) in France moved away from windows / word to Linux / openoffice. source: my did who is now a retired officer. I remember him asking me some cool tips on Linux so he could show off his colleagues who were lost by the transition.
