An embodiment is a sidelink-associated operation method for a transmission user equipment (UE) in a wireless communication system, the method comprising the steps of: determining a long DRX cycle and a short DRX cycle; and on the basis of the long DRX cycle, the short DRX cycle, and a first offset, monitoring control information in an on-duration, wherein the first offset is determined as a sum of k times (wherein k is an integer) a value associated with a sidelink service and a second offset associated with the sidelink service, and the long DRX cycle and the short DRX cycle are determined as m times and n times (wherein m and n are integers) the value associated with the sidelink service, respectively.