I can see that easily as when I am on facebook at times at work I see a lot of my friends also on facebook during the working day. All one has to do is look at their friends and see the times they were on playing this game or that game or even responding to others. I would think here in the USA that figure is just as high if not higher.
Feds: Woman illegally fired over Facebook remarks
A Connecticut woman who was fired after she posted disparaging remarks about her boss on Facebook has prompted a first-of-its-kind legal case by federal authorities who say her comments are protected speech under labor laws. Ref. Source 2
'Expensive paperweight' fired after Facebook posts
A former Social Development Ministry employee landed in hot water after posting a Facebook description of herself as a "very expensive paperweight", "highly competent in the art of time wastage, blame-shifting and stationary [sic] theft". Ref. Source 9