Dr. Sascha Etgen (früher Abdel Hadi)

_{Foto: A. Schaal}

Wissenschaftlicher Mitarbeiter
_{- Postdoctoral Researcher -}

Raum 315, Haus D, 3. OG

Sprechstunde: nach Vereinbarung
Tel.: 0641 / 99 - 26245

E-Mail: Sascha.Etgen

LinkedIn: www.linkedin.com/in/sascha-etgen-373192177

Anschrift 
Justus-Liebig-Universität Gießen
Fachbereich 06 Psychologie und Sportwissenschaft
Abteilung für Sozialpsychologie
Otto-Behaghel-Straße 10D
D-35394 Gießen

Forschungsinteressen 

• Arbeit und Freizeit | Work and leisure time
• Arbeit und körperliche Aktivität | Work and physical activity
• Autonomie bei der Arbeit und Selbstregulation | Job autonomy and self-regulation
• Experimentelle Arbeitspsychologie | Experimental work psychology
• Ecological Momentary Assessment (EMA)

Preise

• Dissertation Award 2023 (second place) of the German Psychological Society (DGPs) section work and organizational psychology
• Andre Bussing Memorial Award 2024 of the European Academy of Occupational Health Psychology (EAOHP)
• Best Poster Award (2022) - European Academy of Occupational Health Psychology - "Work-related rumination as a mediator for the relationship between challenge and hindrance demands and dreams" (first place, co-author)
• Best Oral Paper - Practice and Science & Practice (2022) - "The effects of organizational climate on adherence to guidelines for COVID-19 prevention" European Association of Work and Organizational Psychology (shortlisted, co-author)
• Best Reviewer Award (2026) - Organizational Behavior Division der Academy of Management, AOM Konferenz in Philadelphia

Projektförderungen

• „Sind berufliche Handlungsspielräume ein zweischneidiges Schwert? Die Rolle von Unterstützung durch Vorgesetzte und psychologischen Bedürfnissen“ (Deutsche Forschungsgemeinschaft: AB 972/2-1); zusammen mit Jan Häusser (Gießen); Laufzeit: 2024-2027
• "Safe Autonomy" (Diligentia Foundation); Laufzeit: 2025-2027
• EAWOP CARES ME Grant (European Academy of Work and Organizational Psychology); Laufzeit: 2026-2027
• "Gemeinsam einen Schritt voraus? Der Einfluss gemeinsamer körperlicher Aktivität auf Gruppenleistungen" (Early Career Researcher Grant der JLU; zusammen mit Emma Halfmann (Gießen); Laufzeit: 2025
• "Zurück in die Zukunft - Zusammenhänge von antizipierten Stressoren und körperlicher Aktivität in der Freizeit" (Early Career Researcher Grant der JLU); Laufzeit: 2023

Publikationen (peer-reviewed)

Roswag, M., Häusser, J. A., Hubert, P., Etgen, S., Mojzisch, A., (in press). Organizational climate shapes employee behavior through social norms. Journal of Business and Psychology.  

Häusser, J., Janurek, J. U., Etgen, S., Mojzisch, A. (2026). No evidence of reactivity in accelerometry-based measurement of physical activity and sleep. British Journal of Health Psychology, 31, e70047. https://doi.org/10.1111/bjhp.70047

Hubert, P., Etgen, S., Mojzisch, A., Roswag, M., Häusser, J. A. (2025). Examining the underpinnings of psychosocial safety climate in organizations: a crafting and identity perspective. Journal of Occupational and Organizational Psychology, 98(4), e70075. https://doi.org/10.1111/joop.70075

Etgen, S., Petrou, P., & Häusser, J. A. (2025). Too little and too much job control impair psychological needs: The buffering role of leisure crafting. Journal of Occupational and Organizational Psychology, 98(4), e70069. https://doi.org/10.1111/joop.70069

Roswag, M., Häusser, J. A., Hubert, P., Abdel Hadi [Etgen], S., & Mojzisch, A. (2025). How organizations can sustain employee health during a pandemic: a review and theoretical synthesis. Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie 56, 461–470. https://doi.org/10.1007/s11612-025-00831-2

Hubert, P., Abdel Hadi [Etgen], S., Roswag, M., Mojzisch, A., & Häusser, J. A. (2025). Organizational identification moderates the effects of perceived COVID-19 safety climate on COVID-19 safety behavior in employees’ personal life: a social identity approach. Applied Psychology: Health & Well-Being, 17(4), e70057. https://doi.org/10.1111/aphw.70057

Abdel Hadi [Etgen], S., Häusser, J. A., &  Parker, S. L. (2025). When job control backfires: A self-control perspective on the effects of job control on well-being and performance. Journal of Experimental Psychology: Applied. Advance Online Publication. https://doi.org/10.1037/xap0000538

Abdel Hadi [Etgen], S., Mojzisch, A., Janurek, J., & Häusser, J. A. (2025). A challenge-hindrance perspective on the relationship between job demands, self-regulatory capacity, and employee physical activity. Work & Stress, Advance online publication. https://doi.org/10.1080/02678373.2025.2468719

Petrou, P., Hamrick, A. B., & Abdel Hadi [Etgen], S. (2024). Unraveling the power of leisure crafting for unengaged employees: Implications for creativity and meaning at work. Journal of Organizational Behavior, 45(8), 1170-1188. https://doi.org/10.1002/job.2824

Janurek, J., Junker, N. M., Abdel Hadi [Etgen], S., Mojzisch, A., & Häusser, J. A. (2024). Work-related rumination as a mediator between hindrance demands and sleep quality. Journal of Occupational and Organizational Psychology, 97(3), 783-790 Advance online publication. https://doi.org/10.1111/joop.12501 

Roswag, M., Häusser, J. A., Abdel Hadi [Etgen], S., Hubert, P., & Mojzisch, A. (2024). Political affiliation as a moderator of the relationship between organizational climate and COVID-19 vaccine readiness. Social Science & Medicine, 342, e116557. https://doi.org/10.1016/j.socscimed.2024.116557

Roswag, M., Abdel Hadi [Etgen], S., Häusser, J. A., & Mojzisch, A. (2023). Running towards my challenges: Day-level effects of physical activity before work on appraisal of the upcoming workday and employee well-being. Journal of Occupational Health Psychology, 28, 310-324. https://doi.org/10.1037/ocp0000360

Roswag, M., Häusser, J. A., Abdel Hadi [Etgen], S., Hubert, P., & Mojzisch, M. (2023). Organizations affect their employees’ vaccine readiness: A self-perception theory perspective. Applied Psychology: Health and Well-Being, 15, 1603-1618. https://doi.org/10.1111/aphw.12457

Abdel Hadi [Etgen], S., Kersting, M., Klehe, U. C., Deckenbach, M., & Häusser, J. A. (2023). Relationships between proactive personality, work locus of control, and vocational satisfaction: The role of level of education. Heliyon, 9, e13283. https://doi.org/10.1016/j.heliyon.2023.e13283

Häusser, J. A., Abdel Hadi [Etgen], S., Reichelt, C., & Mojzisch, A. (2023). The reciprocal relationship between social identification and social support over time: a four-wave longitudinal study. British Journal of Social Psychology, 62, 456-466. https://doi.org/10.1111/bjso.12553

Hubert, P., Abdel Hadi [Etgen], S., Mojzisch, A., & Häusser, J. A. (2022). The effects of organizational climate on adherence to guidelines for COVID-19 prevention. Social Science & Medicine, 292, 114622. https://doi.org/10.1016/j.socscimed.2021.114622

Abdel Hadi [Etgen], S., Mojzisch, A., Krumm, S., & Häusser, J. A. (2022). Day-level relationships between work, physical activity, and well-being: Testing the physical activity-mediated demand-control (pamDC) model. Work & Stress, 36, 355-376. https://doi.org/10.1080/02678373.2021.2002971

Abdel Hadi [Etgen], S., Bakker, A. B., & Häusser, J. A (2021). The role of leisure crafting for emotional exhaustion in telework during the COVID-19 pandemic. Anxiety, Stress, & Coping, 34, 530-544. https://doi.org/10.1080/10615806.2021.1903447

Abdel Hadi [Etgen], S., Mojzisch, A., Parker, S. L., & Häusser, J. A. (2021). Experimental evidence for the effects of job demands and job control on physical activity after work. Journal of Experimental Psychology: Applied, 27, 125-141. https://doi.org/10.1037/xap0000333

Mutz, M., Abdel Hadi [Etgen], S., & Häusser, J. A. (2020). Work and sport: relationships between specific job stressors and sports participation. Ergonomics, 63, 1077-1087. https://doi.org/10.1080/00140139.2020.1772381

Janurek, J., Abdel Hadi [Etgen], S., Mojzisch, A., & Häusser, J. A. (2018). The association of the 24-hour distribution of time spent in physical activity, work, and sleep with emotional exhaustion. International Journal of Environmental Research and Public Health, 15, 1927. https://doi.org/10.3390/ijerph15091927