JCQ scale/subscale item

Health workers

Petroleum workers

Mean (SD)*

Skewness (SE)**

Kurtosis (SE)*

Mean (SD)*

Skewness (SE)**

Kurtosis (SE)**

Skill Discretion

“Learn new things”

2.96 (0.75)

−0.75 (0.04)

0.74 (0.08)

3.43 (0.56)

−0.61 (0.11)

0.99 (0.22)

“Repetitive work” ***

3.14 (0.70)

−0.36 (0.04)

1.86 (0.08)

2.29 (0.74)

0.22 (0.11)

−0.17 (0.22)

“Requires creative”

3.02 (0.75)

−0.22 (0.04)

2.81 (0.08)

3.16 (0.67)

−0.65 (0.11)

1.01 (0.22)

“High skill level”

3.10 (0.71)

−0.56 (0.04)

0.38 (0.08)

2.78 (0.65)

−0.35 (0.11)

0.34 (0.22)

“Variety”

2.63 (0.77)

−0.15 (0.04)

−0.34 (0.08)

2.65 (0.71)

−0.20 (0.11)

−0.14 (0.22)

“Develop own abilities”

2.64 (0.77)

−0.28 (0.04)

−0.23 (0.08)

3.25 (0.60)

−0.29 (0.11)

0.00 (0.22)

Decision Authority

“Lot to say about my job”

2.74 (0.77)

−0.02 (0.04)

4.41 (0.09)

2.90 (0.60)

−0.63 (0.11)

1.56 (0.22)

“Allows own decisions”

2.26 (0.84)

0.78 (0.04)

3.43 (0.88)

2.70 (0.74)

0.00 (0.11)

−0.42 (0.22)

“Little decision freedom”***

2.29 (0.76)

0.26 (0.04)

−0.20 (0.08)

2.71 (0.71)

−0.20 (0.11)

−0.11 (0.22)

Psychological Job Demand

“Working hard”

2.33 (0.74)

0.71 (0.04)

2.07 (0.08)

2.62 (0.75)

0.36 (0.11)

−0.59 (0.22)

“Working fast”

2.31 (0.73)

0.48 (0.04)

0.12 (0.08)

2.89 (0.72)

−0.03 (0.11)

−0.64 (0.22)

“No excessive work”***

2.47 (0.73)

0.30 (0.04)

3.52 (0.09)

2.64 (0.75)

0.85 (0.11)

−0.42 (0.22)

“Enough time to get the job done”***

2.91 (0.61)

−0.78 (0.04)

1.88 (0.08)

2.51 (0.70)

0.54 (0.11)

−0.26 (0.22)

“Conflicting demands”

2.40 (0.72)

0.42 (0.04)

1.99 (0.08)

2.86 (0.68)

0.29 (0.11)

0.12 (0.22)

Emotional Demand

“Work is emotionally demanding”

2.84 (0.83)

−0.24 (0.04)

−0.57 (0.08)

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“Communication and negotiation”

3.20 (0.73)

−0.76 (0.04)

0.62 (0.08)

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“Suppressing my genuine emotion”

2.86 (0.79)

0.07 (0.04)

1.75 (0.08)

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Supervisor Social Support

“Supervisor is concerned”

2.81 (0.77)

−0.55 (0.04)

0.23 (0.08)

3.00 (0.70)

−0.80 (0.11)

1.32 (0.22)

“Supervisor supports my job”

2.48 (0.79)

−0.09 (0.04)

−0.46 (0.09)

2.62 (0.75)

−0.42 (0.11)

−0.11 (0.22)

“Treats me with respect”

3.21 (0.55)

−0.32 (0.04)

1.75 (0.09)

2.96 (0.71)

−0.78 (0.11)

1.18 (0.22)

Coworker Social Support

“People are friendly”

3.13 (0.56)

−0.34 (0.04)

1.62 (0.08)

3.05 (0.51)

−0.47 (0.11)

3.20 (0.22)

“People support me to do my job”

2.48 (0.79)

−0.52 (0.04)

1.63 (0.08)

2.96 (0.55)

−0.54 (011)

2.07 (0.22)

“People treat me with respect”

3.20 (0.50)

0.08 (0.44)

1.28 (0.08)

2.84 (0.61)

−0.50 (0.11)

0.91 (0.22)