If you dig into the links in the article, there is one study finding data entry workers in India worked only 87% as hard as their in office counterparts, however, the studies authors are quick to point out living conditions and management styles are significantly different there than in the US. There is also a study in the US which found that approximately 40% of time saved by not commuting went to additional work. Guess which study is brought up in more articles by FORTUNE?