Telephone Cognitive-Behavioral Therapy (CBT) for Subthreshold Depression and Presenteeism in Workplace

Inclusion Criteria: * Age 20-57 at study entry \[because the retirement age is usually 60, we have to recruit the patients well before 60 in order to allow time for follow-up\] * Men and women * Currently employed full-time (either regular or temporary) by the business company * Expected to be employed full-time for 2 years after screening * K6 scores greater than or equal to 9 (or 10) at screening * BDI2 scores greater than or equal to 10 at 2nd screening (Composite International Diagnostic Interview (CIDI) interview) Exclusion Criteria: * Part-time employees * Sick leave for 6 or more days for a physical or mental condition in the past month * Expected to be on pregnancy leave, maternity leave or nursing leave within 2 years after screening * Current treatment for a mental health problem from a mental health professional * Major depressive episode in the past month, as ascertained by CIDI \[We do not exclude dysthymia or major depression in partial remission\] * Lifetime history of bipolar disorder, as ascertained by CIDI * Any substance dependence in the past 12 months, as ascertained by CIDI. \[We do not exclude substance abuse.\] * Any other current mental disorder if it constitutes the predominant aspect of the clinical presentation and requires treatment not offered in the project * Those who have already received the telephone CBT in the pilot runs