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Behind similar unemployment rates in the United States and Portugal hide two very different labor markets. Unemployment duration is three times longer in Portugal than in the United States. Symmetrically, flows of workers into unemployment are three times lower in Portugal. These lower flows come in roughly equal proportions from lower job creation and destruction, and from lower worker flows given job creation and destruction. A plausible explanation is high employment protection in Portugal. High employment protection makes economies more sclerotic; but because it affects unemployment duration and worker flows in opposite directions, the effect on unemployment is ambiguous.

We analyze the effects of founding conditions on the survival of new firms. Based on arguments from several theoretical perspectives, namely economics, organizational ecology, and the resource-based view of the firm, we develop hypotheses that relate the survival of firms to the conditions confronted by firms at each moment and to those prevailing at the time of founding. We develop an empirical model that allows the effects of founding conditions to be transitory and estimate how long such effects last. The results of estimating such a model indicate that founding effects are important determinants of exit rates. Moreover, in most cases, their effect on survival seems to persist with little attenuation for several years following the founding of the firm. Overall, our findings suggest that there is no absolute superiority of any of the aforementioned theoretical perspectives over the others, and there are important elements in all of them to explain the survival of firms.

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