Abstract
SummaryThis paper aims at investigating the determinants of self- employment within a structural model of discrete choice under uncertainty. The basic idea of our approach centres around Knight's (1921) famous view of entrepreneurs receiving risk-adjusted income that has to exceed the income of employees because of the greater variance of the income stream. Unlike previous econometric approaches, which use reduced form specifications that are more or less based on ad-hoc reasoning, we derive a choice equation of which the parameters have a clear interpretation in terms of the parameters of the underlying von Neumann-Morgenstern utility function. The specification allows to identify how the difference in income risk between wage-employment and self- employment enters the choice equation without approximating the risk difference via a reduced form specification. The model is estimated using a random effects panel probit estimator with unrestricted autocorrelation structure. Estimates are based on a balanced panel of 1,926 working men selected from the West German Socio-Economic Panel 1984 to 1989.
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