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Validity test results.
| Variable | Item | Factor load | Proportion of explained variance (%) |
|---|---|---|---|
| Workload | I1 | 0.816 | 60.037 |
| I2 | 0.812 | ||
| I3 | 0.811 | ||
| I4 | 0.810 | ||
| I5 | 0.809 | ||
| I6 | 0.805 | ||
| I7 | 0.804 | ||
| I8 | 0.802 | ||
| Job satisfaction | I9 | 0.812 | 55.614 |
| I10 | 0.816 | ||
| I11 | 0.814 | ||
| I12 | 0.810 | ||
| I13 | 0.815 | ||
| I14 | 0.812 | ||
| Miners’ unsafe state | I15 | 0.802 | 63.706 |
| I16 | 0.804 | ||
| I17 | 0.800 | ||
| I18 | 0.801 | ||
| I19 | 0.807 | ||
| I20 | 0.800 | ||
| I21 | 0.801 | ||
| I22 | 0.799 |
