The Power-Sharing Event Dataset (PSED) contains information on the promises and practices of power-sharing between governments and rebels for a five-year period after the conclusion of a peace agreement (unless violence recurred earlier). The main features of this dataset are the specific focus on government-rebel dyads during post-conflict periods, an exact temporal mapping of implemented or abolished power-sharing events, and detailed descriptions for each power-sharing arrangement put into practice. This codebook describes the definitions of core concepts and operationalization of variables in this data collection. It also presents the PSED coding procedure. An explanation of the theoretical impetus behind the PSED as well as an in-depth discussion of its concepts can be found in the PSED data feature in Conflict Management and Peace Science (Ottmann and Vüllers 2014).