Bob Nelson, author of the multimillion-copy bestseller 1001 Ways to Reward Employees, and human performance expert Mario Tamayo offer hundreds of practical, creative tips for helping employees--and their managers--make work more fun.According to the employees that work for firms listed in Fortune's "100 Best Companies to Work for in America," the most defining characteristic of these organizations is they are all "fun" places to work. Fun is the secret sauce every business ne