In particular, the volume refers to the emerging literature identifying the role of knowledge spillovers to investigate the significance of labor mobility and informal networks as mechanisms facilitating the flow of knowledge. There is no field in economics has dealt extensively with the microeconomics of knowledge spillovers. This volume brings together scholars frombroad includinglabor economic spectrum, regional economics, economics of innovation and technological change, and sociology to introduce new insights generated from microfoundations of knowledge spillovers.