Neffke, Frank2020-12-162017-01Neffke, Frank. “Coworker Complementarity.” CID Research Fellow and Graduate Student Working Paper Series 2017.79, Harvard University, Cambridge, MA, January 2017.https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37366602How important is working with people who complement one's skills? Using administrative data that record which of 491 educational tracks each worker in Sweden absolved, I quantify the educational tracks among coworkers along two dimensions: coworker match and coworker substitutability. Complementary coworkers raise wages with a comparable factor as does a college degree, whereas working with close substitutes is associated with wage penalties. Moreover, this coworker fit does not only account for large portions of the urban and large-plant wage premiums, but the returns to own schooling and the urban wage premium are almost completely contingent on finding complementary coworkers.en-USResearch Paper or Report2020-12-16