This study is a randomized comparison of two treatments for major depression - fluoxetine and brief psychodynamic psychotherapy. The patients are recruited from occupational health services and suffer from mild to moderate major depressive disorder. The treatments last for 16 weeks. The main outcome measures include HAM-D, BDI, SOFAS, Rand-36. In addition to more traditional outcome measures, we also measure the densities of 5HT-1A and D-2 receptors before and after the treatment using Positron Emission Tomography (PET) . The main hypothesis is that brief psychotherapy is as effective as fluoxetine, but differences between the treatments are seen in PET scanning.