By Paula Burkes Business Writer pburkes@oklahoman.comOklahoma City executive coach Nathan Mellor learned how to be an unscrupulous leader — in his very first job as a mall janitor. His crew chief taught Mellor and his co-workers that it's OK to steal, slack and steal again — all before noon. At the start of every workday, his boss announced, “It's going to be a hot one; we need to rest up;” flipped off the lights; and directed workers to loll on the company couches for 30 minutes.Read more on NewsOK.com