1. Committee of Sponsoring Organizations of the Treadway Commission (COSO). (2013). Internal Control – Integrated Framework: Executive Summary. In this framework, the foundation for internal control is the "Control Environment," which includes Principle 1: "The organization demonstrates a commitment to integrity and ethical values." Failures in this principle represent a breakdown in the internal environment, which is a source of organizational/operational risk. (p. 4, "Control Environment").
2. Lam, J. (2014). Enterprise Risk Management: From Incentives to Controls (2nd ed.). Wiley. In discussions of risk taxonomies, operational risk is consistently defined to include "people risk," which covers employee errors, internal fraud, and ethical breaches. This is a subset of the broader organizational risk category. (Chapter 7, "Risk Taxonomy").
3. MIT OpenCourseWare. (2016). 15.433 Financial Markets, Lecture 19: Operational Risk. The lecture notes define operational risk as "the risk of loss resulting from inadequate or failed internal processes, people and systems or from external events." This definition explicitly places risks from "people," including ethical conduct, within this category. (Section 1, "Definition of Operational Risk").