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α: calibrated so average coauthorship-adjusted count equals average raw count
The paper studies human capital accumulation over workers' careers in an on-the-job search setting with heterogeneous firms. In renegotiation-proof employment contracts, more productive firms provide more training. General and specific training both induce higher wages within jobs and with future employers, even conditional on the future employer type. <P> Because matches do not internalize the specific capital loss from employer changes, specific human capital can be over-accumulated, more so in low type firms. The analysis also establishes that general training can be efficient regardless of the level of labor market frictions. <P>