America: the land of the free and the vacation-deprived.

A recent study by D.C.-based think tank Center for Economic and Policy Research found that out of the 21 richest countries in the world, the U.S. continues to be the only advanced economy that does not guarantee its workers paid vacation . The report added that without a federal paid vacation policy, close to one in four Americans have no paid vacation [and] no paid holidays.

It also revealed a massive gap between full-time and part-time workers, that while 90 percent of full-timers got paid vacation and paid holidays, less than half of part-timers received the same benefits.

This chart from Deutsche Bank hammers home the point: