To investigate the conditions under which learning-by-hiring (or the acquisition of knowledge through the hiring of experts from other firms) is more likely, we study the patenting activities of engineers who moved from United States (U.S.) firms to non-U.S. firms. Statistical findings from negative binomial regressions show that mobility is more likely to result in interfirm knowledge transfer when (1) the hiring firm is less path dependent, (2) the hired engineers possess technological expertise distant from that of the hiring firm, and (3) the hired engineers work in noncore technological areas in their new firm. In addition, the results support the idea that domestic mobility and international mobility are similarly conducive to learning-by-hiring. Thus, our paper suggests that learning-by-hiring can be useful when hired engineers are used for exploring technologically distant knowledge (rather than for reinforcing existing firm expertise) and also for extending the hiring firm's geographic reach.

T his paper investigates whether and how going public affects firm innovation. I propose that initial public offerings (IPOs) fundamentally reshape core organizational structures and processes, and I consider implications for firms' overall innovative productivity and their exploratory search strategies. Using longitudinal data on U.S. medical device firms funded by venture capital and inverse probability of treatment weights to account for self-selection into IPOs and the presence of time-dependent confounders, I find that a firm's overall innovative productivity increases after the firm goes public. Going public also decreases the proportion of innovation search that explores new and recently developed knowledge and increases the proportion of exploratory search building on scientific knowledge. Estimates represent population average treatment effects.

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How does career boundary-crossing affect an entrepreneur's new venture? When entrepreneurs cross industry or functional boundaries to lead startups, they may lack specific experience needed for performance. Conversely, the diverse experiences they carry can enhance exploration and lead to the emergence of innovation in startups. We highlight important consequences of career boundary-crossing, using a multi-industry longitudinal sample of hightechnology firms. We find that entrepreneurs who cross functional boundaries are more likely to lead their startups into new product areas. We also find that entrepreneurs' industry boundarycrossing is associated with startup failure, but it also increases the probability of an IPO.Research paper

How does career boundary-crossing affect an entrepreneur's new venture? When entrepreneurs cross industry or functional boundaries to lead startups, they may lack specific experience needed for performance. Conversely, the diverse experiences they carry can enhance exploration and lead to the emergence of innovation in startups. We highlight important consequences of career boundary-crossing, using a multi-industry longitudinal sample of hightechnology firms. We find that entrepreneurs who cross functional boundaries are more likely to lead their startups into new product areas. We also find that entrepreneurs' industry boundarycrossing is associated with startup failure, but it also increases the probability of an IPO.Research paper