I construct a matching model to explain the labor market transition between employment, unemployment and nonparticipation, and evaluate the quantitative effects of firing costs. The model has several features that are distinguished from previous studies: endogenous labor force participation,...

This paper argues that existing matching models with unemployment as an active search and nonparticipation as an inactive search predict counterfactual results: the unemployment rate is at most two times as volatile as the employmentpopulation ratio; only 20 percent of the actual volatility of...