Materials and Methods

The Ethical Review Committee at the University of Verona approved the study. We administered via mail 258 paper-and-pencil questionnaires to three Italian companies operating in the private service sector (i.e., administrative office sector, general service assistance, company support services). A total of 208 employees filled and returned the questionnaire (response rate 80%). The sample includes 132 females (63%). Their ages range between 20 and 60 years with an average of 41 years (SD = 9.65). The majority of the sample has higher general secondary education or vocational training (24%) or a high school degree (51%), 11% a bachelor degree and 7% a master degree. Most participants work as clerks (63%) or general workers (33%), only 4% are company managers or executives. Regarding supervision roles, 80% of the samples do not have supervising roles, 17.5% of the samples supervise between 1–5 persons, only five participants supervise more than five people.