Some people have a cheating/shortcut mindset which is pervasive in every aspect of their life. He was probably cheating in his job as a contract manager as well

Some people have a cheating/shortcut mindset which is pervasive in every aspect of their life. He was probably cheating in his job as a contract manager as well. His former coworkers were probably happy to see him go, since they had most likely been doing his work.