Institutional theory emphasizes the institutional constraints that render radical innovations illegitimate, but fails to explain how such innovations might succeed. Adopting a micro-institutional perspective, this paper addresses why and how embedded agency may overcome legitimacy crises within established systems. Drawing on a sample of 20 legitimacy problems identified in five radical innovation trajectories at two mature companies, we develop an empirically grounded theory of the institutional work through which proponents legitimize radical innovations within established firms. This theory describes a variety of micro-institutional affordances that enable different strategic responses to legitimacy crises. We thus extend institutional theory by explaining embedded agents' use of a range of options to pursue radical innovation, providing a robust explanation of both institutional stability and radical change.

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Despite the noted potential for team flow to enhance a team's effectiveness, productivity, performance, and capabilities, studies on the construct in the workplace context are scarce. Most research on flow at the group level has been focused on performance in athletics or the arts, and looks at the collective experience. But, the context of work has different parameters, which necessitate a look at individual and team level experiences. In this review, we extend current theories and essay a testable, multilevel model of team flow in the workplace that includes its likely prerequisites, characteristics, and benefits.

In this article we discuss the nature and productivity of informal innovation networks, i.e. informal collaborative arrangements between organizations engaged in product or process innovation. Such networks can be used in any phase of the innovation process, but their informal nature makes them especially suited for its fuzzy front end. We explore their potential in technology exchange and learning on the basis of a combination of organization network theory and knowledge management theory. We discuss issues in network governance and network operational management and discuss the basic dilemma ± which we named the Daphne-dilemma ± facing attempts to improve the productivity of informal innovation networks: too little management effort may lead to under-exploitation of their potential and poor productivity, but too much management effort may destroy their informal nature and hence their creative and explorative potential.

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