This study aims to gain insight in the motivational process of the Job Demands-Resources (JD-R) model by examining whether daily fluctuations in colleague support (i.e., a typical job resource) predict day-levels of job performance through self-efficacy and work engagement. Forty-four flight attendants filled in a questionnaire and a diary booklet before and after consecutive flights to three intercontinental destinations. Results of multilevel analyses revealed that colleague support had unique positive effects on self-efficacy and work engagement. Self-efficacy did not mediate the relationship between support and engagement, but work engagement mediated the relationship between self-efficacy and (in-role and extra-role) performance. In addition, colleague support had an indirect effect on in-role performance through work engagement. These findings shed light on the motivational process as outlined in the JD-R model, and suggest that colleague support is an important job resource for flight attendants helping them reach their work-related goals.

Two studies including 108 nurses and 101 police officers tested the proposition that emotionally demanding interactions with recipients may result in emotional dissonance, which, in turn, may lead to job burnout and impaired performance. More specifically, on the basis of the literature on burnout and emotional dissonance, the authors hypothesized that emotional job demands would explain variance in burnout (i.e., exhaustion and cynicism/disengagement) through their influence on emotional dissonance. In addition, the authors predicted that emotional dissonance would be (negatively) related to in-role performance through its relationship with burnout. The findings of a series of structural equation modeling analyses supported both hypotheses. The implications for research and practice are discussed, as well as avenues for additional research.

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