Managing promotions effectively is one of the most powerful ways leaders can drive their company’s success. We surveyed over 400,000 U.S. workers in the past year and found that when people believe promotions are managed effectively, they’re more than twice as likely to give extra effort at work and to plan a long-term future with their company. They are also five times as likely to believe leaders act with integrity — a key underpinning of the high-trust, high-performing companies we’ve studied for the past three decades as part of the FORTUNE 100 Best Companies to Work For ranking.