Companies in the U.S. realize over 85 percent of their value from the contributions of their people, so when more than 65 percent of the workforce is not engaged, the costs become astronomical. Gallup estimates the cost of disengaged employees for U.S. companies to be over $400 billion.

But what can we do about it? There’s an old saying that “what gets measured gets managed” so in that spirit, many companies are turning to engagement surveys to understand employee engagement at their company and what’s driving the overall sentiment. We wrote this comprehensive guide to help you jump-start the practice within your organization.