Americans leave hundreds of millions of vacation days unused and managers may have something to do with it

WPA Pool / Getty Images Virtually all managers — 9 in 10 — claim they encourage their employees to take paid time off, according to a recent study.  But then why do Americans leave hundreds of millions of vacation days unused? That same study suggests mixed signals are to blame: While the majority of bosses say they nudge workers to take days owed to them, 68% of workers themselves report hearing "nothing, negative or mixed messages about taking vacation," according to the new report by t...