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Does Self-Employment Increase Stress? A Co-Twin Control Analysis of Finnish and US Twins

Souitaris, V. ORCID: 0000-0002-7889-0010, Nicolaou, N., Waters, J. , Shepherd, D. & Hashem, N. (2026). Does Self-Employment Increase Stress? A Co-Twin Control Analysis of Finnish and US Twins. Journal of Business Venturing, 41(1), article number 106556. doi: 10.1016/j.jbusvent.2025.106556

Abstract

Entrepreneurs enjoy autonomy and work on projects they are passionate about, which may improve their mental well-being and reduce stress. At the same time, they face several potential stressors, including long working hours. Empirical evidence on whether those who engage in self-employment experience greater stress than those who do not is mixed, which could reflect the failure to consider self-selection into entrepreneurial careers. In this paper, we re-examine the relationship between self-employment and stress, over and above the self-selection bias of individuals’ predispositions, using two separate studies of monozygotic twins. In the first study (monozygotic twins from Finland), stress is reported as a perceptual measure. In the second study (monozygotic twins from the United States), we measure cortisol as a physiological indicator of stress. In both studies, we show a positive association between self-employment and stress (both perceived and physiological) above and beyond the impact of genetic and rearing factors. We also show that long working hours mediate the relationship between self-employment and stress.

Publication Type: Article
Additional Information: This is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Publisher Keywords: Stress, Entrepreneurship, Twins
Subjects: H Social Sciences > HG Finance
Departments: Bayes Business School
Bayes Business School > Faculty of Management
SWORD Depositor:
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