Do Broad-based Employee Ownership, Profit Sharing and Stock Options Help the Best Firms Do Even Better? Richard Freeman, 2011, Paper, "This article analyses the linkages among group incentive methods of compensation (broad-based employee ownership, profit sharing and stock options), labour practices, worker assessments of workplace culture, turnover and firm performance in firms that applied to the ‘100 Best Companies to Work For in America’ competition from 2005 to 2007. Although employers with good labour practices self-select into the 100 Best Companies firms sample..." Link