The corporate logo represents the customers not the workers. If it did represent the workers ATT would select the most talented and trustworthy people from every country Germany, Poland, Ireland, England, Mexico, Canada, Netherlands, Spain, Portugal, Brazil, Africa, ... and have world class tech division. Anyone with one functional eye and a few brain cells can see that not what ATT is about. It is about lowest cost, lowest acceptable quality. The supervisors are there to ensure proper behavior and must guard against fraud, theft of intellectual property, theft of customer data and the like.
They must also deal with curtailing undesirable office behaviors that have unfortunately become prevalent. Caste cliques, Sabotaging coworkers, lack of teamwork, and the like.
While ATT may be cheap and greedy, they are not foolish. They know they need true ATTers to do the supervision, management and direction setting and engineering specs.