Skill relatedness and firm diversification
利用跨行业劳动力流动数据衡量行业间技能要求的相似性，发现企业更倾向于多元化进入与自身核心业务技能关联强的行业。
Abstract Because of the importance of human capital, a firm's choice of diversification targets will depend on whether these targets offer opportunities for leveraging existing human resources. We propose to quantify the similarity of different industries' human capital or skill requirements, that is, the industries' skill relatedness, by using information on cross‐industry labor flows. Labor flows among industries can be used to identify skill relatedness, because individuals changing jobs will likely remain in industries that value the skills associated with their previous work. Estimates show that firms are far more likely to diversify into industries that have ties to the firms' core activities in terms of our skill‐relatedness measure than into industries without such ties or into industries that are linked by value chain linkages or by classification‐based relatedness. Copyright © 2012 John Wiley & Sons, Ltd.