Employees are often the determining factor between successful companies and ones that never reach their potential. The difference: successful, admired companies have engaged employees. In a Towers Watson study of 50 companies over a one-year period, organizations with high employee engagement had a 19 percent increase in operating income and nearly 28 percent growth in earnings per share (EPS). Conversely, companies with low levels of engagement saw operating income drop more than 32 percent and EPS decline 11 percent.