It's wrong to complain at work.
Tony works as a customer service representative.
Tony wants to express frustration at some tough parts of the job.
Tony expresses concern about things which are negatively affecting his job in a private meeting with a supervisor.
Tony often complains to coworkers about policies and comments on angry customers.
The manager liked one of his ideas and implements a change which makes the day a little easier.
Tony is not picked for promotions because management is concerned about his negative attitude.