A group of coworkers gather together in a conference room. Four are performing in front of the group, acting out a party scene; one pretends to be a dog at the vet, another Mark Twain, and a third is a birthday clown while a fourth guesses who they are. The rest of the group watches and laughs as these four explore what happens when the host spills dip on Mark Twain’s suit, or what a clown’s work life crisis might look like. Believe it or not, this is what effective team building looks like. Recent  studies  show that employees who believe that their workplaces are innovative and fun not only work harder but maintain greater loyalty towards their organizations for longer periods of time. Environments friendly to laughter are creating hotbeds of success. Some companies are enjoying a significant increase in productivity from a single instance of levity, according to Adrian Gostick and Scott Christopher, authors of  The Levity Effect: Why it Pays to Lighten Up ...