42 Chapter 2 Relaxation. We measured relaxation using the 4-item subscale from the recovery experience questionnaire (Sonnentag & Fritz, 2007). An example item is “During time after work, I kick back and relax” (1 = totally disagree, 5 = totally agree). Psychological detachment. To measure psychological detachment, we used another 4-item subscale from the recovery experience questionnaire (Sonnentag & Fritz, 2007). An example item is “During time after work, I forget about work” (1 = totally disagree, 5 = totally agree). Work engagement. Work engagement was measured using the 9-item version of the Utrecht Work Engagement Scale (UWES; Schaufeli, Bakker & Salanova, 2006). An example item is: “When I get up in the morning, I feel like going to work” (1 = never, 7 = always). Cognitive liveliness. To measure cognitive liveliness, we used the 3-item subscale of the Shirom-Melamed Vigor Measure (SMVM; Shirom, 2004). An example item is “I feel I can think rapidly” (1 = never, 5 = always). Exhaustion. We measured exhaustion with eight items from the Oldenburg Burnout Inventory (OLBI; Demerouti et al., 2003). An example item is “After work, I usually feel worn-out and weary” (1 = totally disagree, 4 = totally agree). In-role work performance. We measured in-role work performance using five items developed by Williams and Anderson (1991). An example item is “I adequately complete assigned duties” (1 = totally disagree, 5 = totally agree). Creative work performance. To measure creative work performance, we used seven items developed by Zhou and George (2001). An example item is “I come up with new and practical ideas to improve performance” (1 = totally disagree, 5 = totally agree). Day-Level Measures Job crafting. We measured ‘increasing social job resources’ (using four items), and ‘decreasing hindering job demands’ (using four items) from the Job Crafting Scale (JCS; Tims et al., 2012), because we deemed these strategies most relevant on daily level. We
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