Compulsory admissions represent a significant proportion of psychiatric hospitalizations. A wide variation seems to exist internationally regarding legal frameworks, administrative procedures, detention rates and clinical practice. The aim of the present study is to describe qualitative and quantitative features of compulsory admissions in a large administrative area in southwest Greece, in order to identify targets for future research and possible remediation. Involuntary assessments and admissions in the Department of Psychiatry of the University Hospital of Patras were retrospectively assessed, during a 12-month period, for demographic features and data regarding legal procedures. Diagnoses following compulsory first assessment and at discharge were recorded for the patients who were admitted in our department. During the period of observation, 218 compulsory assessments were made, corresponding to 190 patients and resulting in 183 compulsory admissions. Thirty five cases (16.1%) were assessed as not justifying hospitalization and corresponded mainly to the diagnoses of alcohol and/or substance abuse or dependence. Involuntary hospitalizations represented 44.9% of all psychiatric admissions in our department. Diagnosis at first assessment was most frequently psychosis (68.4%). Diagnoses at discharge were most often schizophrenia (52.8%) and bipolar disorder (21.3%). A history of multiple hospitalizations (>5) was observed in 17 (15.8%) patients, whereas 46 patients (42.6%) were hospitalized for the first time, and 13 (11.7%) exhibited their first psychotic episode. Of the 108 patients who were admitted in our department, 88 (81.5%) declared that they did not wish to attend the court hearing, 7 (6.5%) were not able to attend due to severe health condition, and only 13 (12.0%) actually presented in court. Concluding, current situation regarding legal procedures, involuntary admissions and mental health care in Greece is rather far from satisfying. Future directions should include the systematic recording of mental health care parameters, such as compulsory hospitalizations, as well as efforts to improve these parameters and the existing legal framework and procedures.