Resumen: With an incomplete panel data from 63 countries over 25 years this paper finds that the average number of employees per entrepreneur increases with the countries'' levels of social capital. This evidence is in line with predictions from occupational choice models, where the equilibrium average size of firms increases with lower internal costs of growth, when social capital supported trust reduces these costs facilitating the delegation of decision power in firms. We also find that the influence of social capital in self-employed rates differs if the self-employed have employees or not so entrepreneurs should be treated as a heterogeneous group. Idioma: Inglés DOI: 10.1111/manc.12259 Año: 2018 Publicado en: MANCHESTER SCHOOL 87, 5 (2018), 607 - 639 ISSN: 1463-6786 Factor impacto JCR: 0.43 (2018) Categ. JCR: ECONOMICS rank: 333 / 363 = 0.917 (2018) - Q4 - T3 Factor impacto SCIMAGO: 0.305 - Economics and Econometrics (Q3)