Yahoo CEO Marissa Mayer

Yahoo CEO Marissa Mayer

Jason Alden/Bloomberg

Marissa Mayer, chief executive officer of Yahoo! Inc. “Mayer has taken a giant leap backward,” Jody Thompson, co-founder of workforce consultant CultureRx, said in an e-mail. “Instead of keeping great talent, she is going to find herself with a workplace full of people who are good at showing up and putting in time.”