Juror number seven wants them all to agree that he is guilty so they can be done. But later he decides to listen to what the other men have to say. He does not communicate well by raising his voice and by refusing to listen to others.
Juror number seven would not be a good employee, because he does not listen to others. To be a good employee he would have to learn how to be more respectful and to acknowledge what other people have to say.
12 Angry Men Part 4