" Yet a 2017 Gallup poll found that only 3 in 10 employees strongly agree with the statement that their opinions count at work.6 Gallup calculated that by “moving that ratio to six in 10 employees, organizations could realize a 27 percent reduction in turnover, a 40 percent reduction in safety incidents and a 12 percent increase in productivity.”7 That's why it's not enough for organizations to simply hire talent. "

― Amy C. Edmondson , The Fearless Organization: Creating Psychological Safety in the Workplace for Learning, Innovation, and Growth