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Table 1 Socio-demographic and workplace-related factors of the study population

From: Effects of personality on overtime work: a cross-sectional pilot study among Japanese white-collar workers

Factor Classification n = 267 %
Socio-demographic factors    
   Sex Male 142 53.2
  Female 125 46.8
   Age 20-29 35 13.1
  30-39 102 38.2
  40-49 76 28.5
  50- 54 20.2
   BMI <18.5 32 12.0
  18.5-25 186 69.7
  ≥25 49 18.4
   Sleep <6 hours 37 13.9
  ≥6 hours 230 86.1
   Drinking Never or occasionally 170 63.7
  Sometimes or more often 97 36.3
   Smoking Never or ex-smoker 226 84.6
  Current smoker 41 15.4
   Physical exercise Never or occasionally 121 45.3
  Sometimes or more often 146 54.7
   Hobbies Yes 184 68.9
  No 83 31.1
   Meal times Regular 232 86.9
  Irregular 35 13.1
   Current illness Yes 67 25.1
  No 200 74.9
   Marital status Married 174 65.2
  Unmarried 93 34.8
   Educational level Graduate or higher 139 52.1
  Under graduate 128 47.9
   Stress at home Yes 103 38.6
  No 164 61.4
   Human relations at home Good 242 90.6
  Poor 25 9.4
Workplace-related factors    
   Position Assistant manager or higher 23 8.6
  Chief 69 25.8
  Clerk 94 35.2
  Part-time worker 81 30.3
   Commuting time <30 minutes 178 66.7
  ≥30 minutes 89 33.3
   Job demand High 179 67.0
  Low 88 33.0
   Decision latitude High 231 86.5
  Low 36 13.5
   Social support High 196 73.4
  Low 71 26.6
   Taking paid holiday Yes 218 81.6
  No 49 18.4
   Stopping work Yes 102 38.2
  No 165 61.8
   Difficulty going home Yes 55 20.6
  No 212 79.4
   Fear of the boss Yes 59 22.1
  No 208 77.9
   Work motivation Yes 226 84.6
  No 41 15.4
   Work purpose Yes 213 79.8
  No 54 20.2
   Success motivation Yes 54 20.2
  No 213 79.8
   Gratitude for employment Yes 226 84.6
  No 41 15.4