The Norwegian government has made a clear statement in a new catalog covering data standards of various purposes.
Public enterprises should not use other file formats than ODF (version 1.1) and PDF as attachment at the exchange of documents by email. This rule will apply from 1. January 2011.The Danish government is still working on a similar decision. A report from the Danish competition authority has been delayed. Unfortunately I fear that the Danish government will make a non-decision as usually like: "Each authority may decide for them selves". This will end up in a chaos with at least four different document formats (OOXML, ODF, legacy .doc files and PDF).
Source: Digi.no http://www.digi.no/817635/her-er-statens-nye-it-standarder