Persistent Wage Dispersion and Involuntary Unemployment
分析企业招聘成本导致工资差异和非自愿失业的机制，发现工人申请多家企业时，均衡中工资存在差异，部分工人随机未获录用；同行业企业即使技术相同，也可能选择不同资本强度，资本密集型企业支付更高工资。
It is costly for firms' offers to workers to be turned down both because firms must make additional offers and making offers is costly and because capital is underused or unused. Provided that workers apply to at least two firms for jobs, there will be wage dispersion in equilibrium, and some workers will randomly fail to receive any wage offers. Firms in the same industry with access to the same technology may nevertheless choose different levels of capital intensity. Firms using capital-intensive technologies will pay higher wages.