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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