Good epistemic practices are essential to the well-functioning of organizations. Epistemic practices are adopted norms, policies, procedures, and general methodologies that further our epistemic aims or realize our epistemic values. This chapter argues for the importance of organizational good epistemic practices through an analysis of the failures of risk management implicated in JPMorgan’s notorious ‘London Whale’ trading losses, which roiled the financial markets in 2012. A number of these failures of risk management exemplified ways in which we, as fallible reasoners, (...) may be prone to error individually and collectively. Good epistemic practices inter alia anticipate and endeavor to correct for erroneous patterns of reasoning. They help guard against future epistemic failings, and they support good reasoning within and on the part of organizations. In so doing, they constitute some of the key structural elements of organizational epistemic virtues. (shrink)