Jonathan develops tension headaches while trying to meet a deadline at work. This tactic allows him to escape responsibility for meeting the deadline and to receive sympathy from his boss and coworkers. According to Adler, Jonathan's headaches are examples of

Organ Dialect

Explanation:

Based on the information provided within the question it can be said that according to Adler, Jonathan's headaches are examples of an Organ Dialect. This term refers to a specific sign or symptom that demonstrates an individual's attitudes and opinions. Which in this case would be Jonathan's headaches since they represent the kind of person he is since he uses them as an escape tactic from work.