Exogenous versus Endogenous Separation
评估不同分离率设定方式对Mortensen-Pissarides劳动匹配模型定量能力的影响，发现内生分离能更好解释分离率和工人流量的波动，但所有设定均无法产生足够的工作找到率波动。
This paper assesses how various approaches to modeling the separation margin affect the quantitative ability of the Mortensen-Pissarides labor matching model. The model with a constant separation rate fails to produce realistic volatility and productivity responsiveness of the separation rate and worker flows. The specification with endogenous separation succeeds along these dimensions. Allowing for on-the-job search enables the model to replicate the Beveridge curve. All specifications, however, fail to generate sufficient volatility of the job finding rate. While adopting the Hagedorn-Manovskii calibration remedies this problem, the volume of job-to-job transitions in the on-the-job search specification becomes essentially zero.