Infographic: Why you should take more vacation days

Eighty-five percent of American workers say taking time off makes them happier, yet employees are more reluctant than ever to use their vacation days, an infographic from City Pass says.

From 1976 to 2000, Americans took, on average, 20 vacation days a year. That number has steadily fallen since.

Why don’t workers want to use their hard-earned time off?

Forty percent say they don’t want work to pile up, 35 percent say no one else can do their jobs, and 22 percent don’t want to seem replaceable, among other reasons.