WASHINGTON — There is more evidence that not getting enough sleep can have a financial cost.

For those seeking a bigger salary and more success, it seems an ample amount of sleep is the key.

Researchers at the University of California, San Diego say they crunched the numbers connecting wages and sleep and the more rested appear to be more more valuable and make better investment decisions.

While some say they thrive on just a few hours of sleep a night, experts say sleeping less than eight hours will pay off negatively.

The study finds just getting one more hour could increase salary by 16 percent and running on empty leads to poor job performance.

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WTOP’s Lori Lundin contributed to this report. Follow @WTOP on Twitter and on the WTOP Facebook page.