Answer:
Burnout
Explanation:
In psychology, the term burnout makes reference to a state of mental, emotional and physical exhaustion that is caused by being exposed to long periods of stress. It doesn't have to do just with working a lot of hours but with the constant demands of a job that the person feels unable to meet and cause them a state of  feeling constantly overwhelmed and drained.
In this example, Andrew's job requires him to work on night ships and weekends. Now he has started drinking to overcome the job stress and he's feeling irritable and antisocial. We can see that he started drinking because of the stress that his job was generating on him. Therefore, since he has been exposed to long periods of stress, we can say that he is most likely a victim of burnout.