Facebook employees are shown on the campus in Menlo Park, Calif., Friday, March 15, 2013. Companies say extraordinary campuses are a necessity, to recruit and retain top talent, and to

 

              Facebook employees are shown on the campus in Menlo Park, Calif., Friday, March 15, 2013. Companies say extraordinary campuses are a necessity, to recruit and retain top talent, and to
Facebook employees are shown on the campus in Menlo Park, Calif., Friday, March 15, 2013. Companies say extraordinary campuses are a necessity, to recruit and retain top talent, and to spark innovation and creativity in the workplace. And there are business benefits and financial results for companies that keep their workers happy. (AP Photo/Jeff Chiu)