Whether you look at polls of employees or Silicon Valley's obsession with perks like unlimited vacation days, it's clear that flexibility is the latest hot workplace benefit. Some commentators have even gone so far as to call flexibility the new definition of success.

There's plenty of reason to cheer this development. Studies show that flexibility reduces stress and can boost productivity, and on a human level having the ability to adjust your schedule to help an ailing relative or attend your kid's field trip is certainly nice. But while there's a compelling case to be made for workplace flexibility, that doesn't mean the idea is all upside, as two new studies illustrate.

Via inc.com