This symposium features four exciting new projects on the theme of innovation and labor market mobility, with discussant comments from Martin Ganco, followed by questions from the audience.   Discussant: Martin Ganco (University of Wisconsin Madison)   Papers: “(Co-)Working in Close Proximity: Heterogeneous Impacts on Peer Learning and Startup Performance Outcomes” - Maria Roche (HBS), Alex Oettl (Georgia Tech), and Christian Catalini (MIT)   “External Knowledge Sourcing and Employee Mobility Barriers” - Deepak Somaya (U of Illinois) and Eunkwang Seo (U of Illinois)   “Hunting for talent: Firm-driven labor market search in the United States” - Ines Black (Duke), Sharique Hasan (Duke) & Rem Koning (HBS)   “Firing Costs and Decoupling of Technological Invention and Post-invention Investments” - Daniel Keum (Columbia)   (c) STR - Strategic Management Division - AOM