Whether it's constantly following up on emails, making corny jokes to your boss to get in his or her good graces, or just dealing with the mess that is interviewing, it takes way too much effort to stomach office culture throughout the work week.
These managers had no clue their former employee added so much value to the company. In fact, they told the employee his work was worthless. They learned the truth the hard way.
When you get badly wounded and they ask you to complete your hours before seeking medical attention, that's when you better believe you're not treated like a human being at work.