This paper analyzes empirical income distributions and proposes a simple stochastic model to explain the stationary distribution and deviations from it. Using the individual tax returns data in the U.S. and Japan for 40 years, we first summarize the shape of the income distribution by an...

This paper quantifies the effect of time-varying employment risks on the fluctuations of aggregate consumption in a dynamic general equilibrium with incomplete markets. A government's redistribution policy through provision of unemployment insurance can cause a positive correlation between...

This study investigates the impact of management style on research performance in science. If a managerial role is played by a leading scientist in the research team, that is considered management-research integration. If not, we consider that management and research are separated. We found that...

This paper presents a tractable dynamic general equilibrium model of income and firm-size distributions. The size and value of firms result from idiosyncratic, firm-level productivity shocks. CEOs can invest in their own firms¡¯ risky stocks or in risk-free assets, implying that the CEO's...

This study examines the response of aggregate consumption to active labor market policies that reduce unemployment. We develop a dynamic general equilibrium model with heterogeneous agents and uninsurable unemployment as well as policy regime shocks to quantify the consumption effects of policy....

This paper presents a dynamic general equilibrium model with heterogeneous firms and entrepreneur's portfolio choice. We analytically show that this model generates the Pareto distribution of top income earners and Zipf's law of firms at the steady state. The differential equation for the...

This paper quantifies the spillover effect of local exogenous shocks, such as earthquakes, to other firms through supply chain networks. Combining micro data on a large-scale inter-firm transaction network and geographic information on firm location, we examine the firm level impact of supply...

This paper demonstrates endogenous fluctuations of aggregate investments when firm-level investments follow an (S,s) policy and exhibit strategic complementarity. We present a method to characterize the aggregate fluctuations that arise from the interaction of the (S,s) policies. A closed-form...

This paper demonstrates that the interactions of firm-level indivisible investments give rise to aggregate fluctuations without aggregate exogenous shocks. I develop a method to derive the distribution of aggregate capital growth rate by embedding a fictitious tatonnement in a branching process....