This is an excellent article , available from Proquest (subscription required, sorry) which outlines a number of issues surrounding policy and how these interact with employee rights
The IBM blogging policy is very detailed and explains much about the company’s engagement strategy.
The official Sun policy on blogging. It’s pretty cruisy, although reading between the lines it hits hard.
StlRecruiting: Blogging Is A Legally Protected Activity, No Really: “If, however, you have a wild streak …, or perhaps if you have been … fired for blogging, it’s something your lawyer ought to be thinking about. And if you’re a company, let me stress this again – why haven’t you talked to a a lawyer [...]
Develop a corporate blogging policy / Neil McIntyre: “There are few golden examples of corporate blogging policies that provide employees useful and necessary guidance on what they can blog about and how they should do it as it relates to company information.”
Blog profile: Brands, bridges and bushfires: “As recent US cases indicate, some enterprises have sought to crimp comment made by employees on a personal basis – an issue that we have explored in discussing online free speech. Those efforts reflect community and judicial acceptance of limits on employee statements in newspapers, private newsletters and other [...]
If you’re wondering what factors to consider before starting a corporate blog, here’s your starting point. Robert Scoble, blogging guru from Microsoft, sets out some of the key points to consider before you go public with your thoughts. Scobleizer: Microsoft Geek Blogger