Table 2.
Principal component analysis of ERI items with varimax rotation of factor loadings. The significant item loadings are highlighted by Bold.
| Item no. | Mean (SD) | Components | Item-total correlation coefficient (corrected) | |||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |||
| eri1 (§)—I have constant time pressure due to a heavy work load | 2.46 (.79) | −.149 | .753 | −.140 | −.081 | .547 |
| eri2 (§)—I have many interruptions and disturbances while performing my job | 2.64 (.82) | −.057 | .727 | −.139 | −.071 | .486 |
| eri3 (§)—Over the past few years, my job has become more and more demanding | 2.14 (.76) | −.098 | .739 | −.003 | −.015 | .498 |
| eri4 (§)—I receive the respect I deserve from my superior or a respective relevant person | 3.17 (.72) | .082 | −.051 | .702 | −.024 | .402 |
| eri5—My job promotion perspectives are poor | 2.48 (.89) | −.022 | −.219 | .173 | .667 | .408 |
| eri6—I have experienced or I expect to experience an undesirable change in my work situation | 2.72 (.76) | .108 | −.170 | .234 | .717 | .518 |
| eri7—My job security is poor | 2.68 (.81) | .077 | .119 | .071 | .787 | .396 |
| eri8 (§)—Considering all my efforts and achievements, I receive the respect and prestige I deserve at work | 2.79 (.72) | −.016 | −.051 | .791 | .102 | .540 |
| eri9 (§)—Considering all my efforts and achievements, my job promotion prospects are adequate | 2.62 (.71) | .030 | −.027 | .698 | .306 | .540 |
| eri10 (§)—Considering all my efforts and achievements, my salary/income is adequate | 2.19 (.77) | −.128 | −.120 | .546 | .226 | .385 |
| oc1—I get easily overwhelmed by time pressure at work | 2.65 (.71) | .305 | −.556 | .006 | .091 | .350 |
| oc2—As soon as I get up in the morning I start thinking about work problems | 2.76 (.83) | .686 | −.233 | −.034 | .101 | .539 |
| oc3 (§)—When I get home, I can easily relax and “switch off” work | 2.79 (.77) | .647 | .069 | .268 | −.045 | .360 |
| oc4—People close to me say I sacrifice too much for my job | 2.46 (.74) | .417 | −.295 | −.104 | .068 | .344 |
| oc5—Work rarely lets me go, it is still on my mind when I go to bed | 2.85 (.76) | .791 | −.168 | −.022 | .016 | .613 |
| oc6—If I postpone something that I was supposed to do today I'll have trouble sleeping at night | 2.64 (.81) | .713 | −.104 | −.078 | .043 | .506 |
|
| ||||||
| Construct | Overcommitment | Effort | Reward-respect | Reward-career | ||
|
| ||||||
| % of variance explained by the scale | 14.8% | 14.1% | 13.3% | 11.1% | ||
|
| ||||||
| Reliability (Cronbach's alpha) | .72 | .69 | .68 | .63 | ||
(§) reversed score.