This study investigates whether crafting of job demands and resources relates positively to extra-role behavior (i.e. contextual performance and creativity) through work engagement and flourishing. We collected data from 294 employees and their supervisors regarding employees' contextual performance and creativity. Results show that seeking resources had a positive indirect relationship with contextual performance through work engagement, and with creativity through work engagement and flourishing. Reducing demands had negative indirect relationships with both contextual performance and creativity through work engagement. We conclude that particularly seeking resources has important implications for extra-role behavior and discuss the practical implications of these findings. •Work engagement shows stronger associations with supervisor-rated extra-role behavior than flourishing.•Job crafting both favorably and unfavorably affects work engagement and flourishing.•Seeking resources favorably affects contextual performance and creativity through work engagement.•Reducing demands unfavorably affects contextual performance and creativity through work engagement.