evidence: The BDI-II scores fell from the mean of 17.3 at baseline to 11.0 in the intervention group and to 15.7 in the control group after 4 months (p<0.001, Effect size = 0.69, 95%CI: 0.32 to 1.05). 
intervention: trained psychotherapists in addition to the pre-existing Employee Assistance Program (EAP)
comparator: Employee Assistance Program
outcome: Beck Depression Inventory-II (BDI-II) after 4 months