Method for interworking between networks in wireless communication system and apparatus therefor

An aspect of the present invention relates to a method for interworking between networks for a terminal in a wireless communication system, comprising the step of performing a first interworking procedure for changing a network of the terminal from a 5-generation core (5GC) network to an evolved packet core (EPC) network, wherein the step of performing a first interworking procedure may comprise the steps of: if there is no interface between the 5GC and the EPC networks, receiving a first indication from an access and mobility management function (AMF) of the 5GC network; and performing a handover attach procedure in the EPC network on the basis of the first indication.