This document summarizes policies for managing conflicts of interest in health systems from four countries: the United States, United Kingdom, Germany, and Sweden. It defines a conflict of interest and discusses who such policies apply to, including both internal employees and external experts/contractors. It examines the types of interests that should be declared, such as pecuniary and non-pecuniary interests as well as family interests. The document also outlines when and how interests should be declared, either upon appointment, before meetings, or annually. Finally, it notes some of the challenges around setting appropriate limits for interest declarations.