The article states that reward for the performance of employees is a way of management, and gives some pieces of information about it. However, the professor explains that in this manner, there are some negative effects, and refutes the author's points about it.
First, the reading claims that the ties between performance and reward cause of increasing the productivity. The professor rebuts this point by saying that in many times reward decrease the productivity. He states that many employees feel that they have been punished because the supervisors seriously control them.
Second, the article posits that the incentive improves employees' behavior in their workplace. On the other hand, the professor illustrates that the fail to get the reward could cause of disappointment among employees, so according to the professor it could reduce the productivity.
Third, the reading states that correcting the structure of the reward system may persuade many people to get noticeable results. The professor opposes this point by explaining that many employees conceal their problems to get a higher grade in the reward system.