Provided are a method for receiving, by a terminal, data on an unlicensed band in a wireless communication system, and an apparatus for supporting the same. The terminal receives, from a base station, a first indicator which indicates existence of data to be transmitted to the terminal; receives a timer value from the base station; performs channel sensing in a section where a timer operates; and can transmit, to the base station on the basis of the result of performing channel sensing, either one of a second indicator, which indicates that reception of data is possible, and a third indicator, which indicates that reception of data is impossible.