Social Preferences, Skill Segregation, and Wage Dynamics
构建模型研究工人具有社会偏好时，技能完全可替代下的工资结构与均衡分配，发现长期合同会带来内部劳动力市场特征，如渐进晋升、与生产率无关的工资增长和向下灵活性。
We study the earning structure and the equilibrium asignment of workers to firms in a model in which workers have social preferences, and skills are perfectly substitutable in production. Firms offer long-term contracts, and we allow for frictions in the labour market in the form of mobility costs. The model delivers specific predictions about the nature of worker flows, about the characteristic of workplace skill segregation, and about wage dispersion both within and cross firms. We shows that long-term contracts in the resence of social preferences associate within-firm wage dispersion with novel "internal labour market" features such as gradual promotions, productivity-unrelated wage increases, and downward wage flexibility. These three dynamic features lead to productivity-unrelated wage volatily within firms.