Top 10 ranking: No. 8 for retention All employees are created equal at this San Antonio-based managed hosting services company, and the lack of hierarchy extends all the way to the parking lot. There are no reserved parking places for executives (only for disabled workers and expectant mothers), and executives' doors are always open to employees. To reward employees for a successful quarter, executives throw companywide celebrations such as "Racktoberfest," "Racker Battle of the Bands" and "Rack Idol." Employees can work flexible hours, and they receive 15 paid days off per year. The dress code is casual. Employee-led groups like the "Rack Gives Back" philanthropy committee and the "Rack Pack" social council are growing in number. Rackspace conducts regular "happy check" employee surveys to gauge satisfaction levels and gather employees' opinions on subjects such as whether or not they have the ability to do what they are best at every day.