The Geography of Job Tasks
基于招聘广告中的自然语言，构建了工作任务和工人专业化的精细度量，发现大城市的工作更强调人际互动和计算机软件使用，且工人专业化程度更高，这些因素解释了相当一部分市场规模的收入溢价。
We introduce new measurement tools to understand the sources of earnings differences across space. Based on the natural language employers use in job ads, we develop granular measures of job tasks and of worker specialization. We find that jobs in larger commuting zones involve greater interpersonal interactions and have higher computer software requirements. Between 10% and 50% of task and technology variation between large and small commuting zones exists within occupations. Furthermore, workers in larger markets are more specialized. Tasks, technologies, and worker specialization account for a substantial portion of the market size premium even within occupations.