Over at Slate, Matthew Yglesias suggests that Yahoo president Marissa Mayer may not be against working from home per se, but is attempting to cleanly lay off low productivity workers:
You think you have some reason to believe that the full-time workers from home on the Yahoo staff are a disproportionately low-productivity cohort. Announcing this new policy becomes a way of reducing the size of the staff without throwing everyone into a panic about layoffs and cost-cutting and oh-my-god-should-I-be-looking-for-a-new-job-elsewhere.
But perhaps Mayer may have made a mistake with this assumption. Economist Stephen Dubner of Freakonomics fame provides an argument against the idea that working from home lowers productivity: