Career interruptions: a neglected aspect of a neoclassical model

There is voluminous literature on the reasons behind career interruptions, ranging from maternity leave and organizational layoffs, to national service and human capital acquisition. We show that a standard, neoclassical model of intertemporal consumption/saving and labor/leisure choices without any friction can generate multiple career interruptions as a natural outcome of a consumption/leisure smoothing exercise performed by perfectly rational agents. Given the complexity of such a model, and to be consistent with traditions from the optimal control branch of mathematics, we use advances in numerical optimal control to solve a neoclassical problem.