Various aspects of the present disclosure generally relate to signaling in frame-based equipment (FBE) mode for channel occupancy time (COT) sharing. In some aspects, a user equipment (UE) may receive, in association with an FBE mode, a message associated with a designation of the UE for either COT sharing or non-COT sharing. The UE may detect whether there is an initial signal at a boundary of a time frame for COT and sleep, monitor, or communicate during the time frame, based at least in part on the designation and the detecting. Numerous other aspects are provided.